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<!--Created by Genesis Filings LLC, Powered by IRIS Carbon, Unique Code 6112ce1f39fddb077c1ccc1d, Generated At Tue, 10 Aug 2021 19:07:18 GMT-->
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    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOperatingLeaseLiability_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInOperatingLeaseLiability_1" xml:lang="en-US" id="label_IncreaseDecreaseInOperatingLeaseLiability_1">Increase (Decrease) in Operating Lease Liability</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="StockholdersEquityAbstract" xlink:title="StockholdersEquityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockholdersEquityAbstract" xml:lang="en-US" id="label_StockholdersEquityAbstract">Shareholders' equity:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityAbstract" xlink:to="label_StockholdersEquityAbstract" xlink:title="Label : StockholdersEquityAbstract to label_StockholdersEquityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquityAbstract_1" xml:lang="en-US" id="label_StockholdersEquityAbstract_1">Stockholders' Equity Attributable to Parent [Abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo">Lessee, Operating Lease, Liability, Payments, Due Year Two</link:label>
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    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_1">2023</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths">2022</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths">2022</link:label>
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    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1">Finite-Lived Intangible Asset, Expected Amortization, Year One</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths to label_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityAbstract" xlink:label="OperatingLeaseLiabilityAbstract" xlink:title="OperatingLeaseLiabilityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OperatingLeaseLiabilityAbstract" xml:lang="en-US" id="label_OperatingLeaseLiabilityAbstract">Operating lease liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityAbstract" xlink:to="label_OperatingLeaseLiabilityAbstract" xlink:title="Label : OperatingLeaseLiabilityAbstract to label_OperatingLeaseLiabilityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseLiabilityAbstract_1" xml:lang="en-US" id="label_OperatingLeaseLiabilityAbstract_1">Operating Lease, Liability [Abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue">Total intrinsic value of options outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_1" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_1">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_1" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear" xml:lang="en-US" id="label_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear">2021 (Remainder)</link:label>
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    <link:label xlink:type="resource" xlink:label="label_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_1" xml:lang="en-US" id="label_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_1">Long-Term Debt, Maturity, Remainder of Fiscal Year</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="DebtInstrumentInterestRateStatedPercentage" xlink:title="DebtInstrumentInterestRateStatedPercentage" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateStatedPercentage" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_DebtInstrumentInterestRateStatedPercentage" xml:lang="en-US" id="label_DebtInstrumentInterestRateStatedPercentage">Interest rate of the loan obtained</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="EquityMethodInvestmentOwnershipPercentage" xlink:title="EquityMethodInvestmentOwnershipPercentage" />
    <link:label xlink:type="resource" xlink:label="label_EquityMethodInvestmentOwnershipPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EquityMethodInvestmentOwnershipPercentage" xml:lang="en-US" id="label_EquityMethodInvestmentOwnershipPercentage">Beneficial ownership percentage of common stock</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="DebtInstrumentFaceAmount" xlink:title="DebtInstrumentFaceAmount" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentFaceAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentFaceAmount" xml:lang="en-US" id="label_DebtInstrumentFaceAmount">Principal amount of loan obtained</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFaceAmount" xlink:to="label_DebtInstrumentFaceAmount" xlink:title="Label : DebtInstrumentFaceAmount to label_DebtInstrumentFaceAmount" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MajorityShareholderMember" xlink:label="MajorityShareholderMember" xlink:title="MajorityShareholderMember" />
    <link:label xlink:type="resource" xlink:label="label_MajorityShareholderMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MajorityShareholderMember" xml:lang="en-US" id="label_MajorityShareholderMember">Edward D. Bagley</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MajorityShareholderMember" xlink:to="label_MajorityShareholderMember" xlink:title="Label : MajorityShareholderMember to label_MajorityShareholderMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NotesPayableOtherPayablesMember" xlink:label="NotesPayableOtherPayablesMember" xlink:title="NotesPayableOtherPayablesMember" />
    <link:label xlink:type="resource" xlink:label="label_NotesPayableOtherPayablesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NotesPayableOtherPayablesMember" xml:lang="en-US" id="label_NotesPayableOtherPayablesMember">Notes Payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotesPayableOtherPayablesMember" xlink:to="label_NotesPayableOtherPayablesMember" xlink:title="Label : NotesPayableOtherPayablesMember to label_NotesPayableOtherPayablesMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BridgeLoanMember" xlink:label="BridgeLoanMember" xlink:title="BridgeLoanMember" />
    <link:label xlink:type="resource" xlink:label="label_BridgeLoanMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BridgeLoanMember" xml:lang="en-US" id="label_BridgeLoanMember">Bridge Loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BridgeLoanMember" xlink:to="label_BridgeLoanMember" xlink:title="Label : BridgeLoanMember to label_BridgeLoanMember" />
    <link:label xlink:type="resource" xlink:label="label_EquityMethodInvestmentOwnershipPercentage_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityMethodInvestmentOwnershipPercentage_1" xml:lang="en-US" id="label_EquityMethodInvestmentOwnershipPercentage_1">Equity Method Investment, Ownership Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentOwnershipPercentage" xlink:to="label_EquityMethodInvestmentOwnershipPercentage_1" xlink:title="Label : EquityMethodInvestmentOwnershipPercentage to label_EquityMethodInvestmentOwnershipPercentage_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentFaceAmount_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentFaceAmount_1" xml:lang="en-US" id="label_DebtInstrumentFaceAmount_1">Debt Instrument, Face Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFaceAmount" xlink:to="label_DebtInstrumentFaceAmount_1" xlink:title="Label : DebtInstrumentFaceAmount to label_DebtInstrumentFaceAmount_1" />
    <link:label xlink:type="resource" xlink:label="label_MajorityShareholderMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MajorityShareholderMember_1" xml:lang="en-US" id="label_MajorityShareholderMember_1">Majority Shareholder [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MajorityShareholderMember" xlink:to="label_MajorityShareholderMember_1" xlink:title="Label : MajorityShareholderMember to label_MajorityShareholderMember_1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NotesPayableOtherPayablesMember" xlink:to="label_NotesPayableOtherPayablesMember_1" xlink:title="Label : NotesPayableOtherPayablesMember to label_NotesPayableOtherPayablesMember_1" />
    <link:label xlink:type="resource" xlink:label="label_BridgeLoanMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BridgeLoanMember_1" xml:lang="en-US" id="label_BridgeLoanMember_1">Bridge Loan [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BridgeLoanMember" xlink:to="label_BridgeLoanMember_1" xlink:title="Label : BridgeLoanMember to label_BridgeLoanMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityAddressStateOrProvince" xlink:label="EntityAddressStateOrProvince" xlink:title="EntityAddressStateOrProvince" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressStateOrProvince" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressStateOrProvince" xml:lang="en-US" id="label_EntityAddressStateOrProvince">Entity Address, State or Province</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressStateOrProvince" xlink:to="label_EntityAddressStateOrProvince" xlink:title="Label : EntityAddressStateOrProvince to label_EntityAddressStateOrProvince" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_DocumentTransitionReport" xlink:label="DocumentTransitionReport" xlink:title="DocumentTransitionReport" />
    <link:label xlink:type="resource" xlink:label="label_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentTransitionReport" xml:lang="en-US" id="label_DocumentTransitionReport">Document Transition Report</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentTransitionReport" xlink:to="label_DocumentTransitionReport" xlink:title="Label : DocumentTransitionReport to label_DocumentTransitionReport" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_DocumentQuarterlyReport" xlink:label="DocumentQuarterlyReport" xlink:title="DocumentQuarterlyReport" />
    <link:label xlink:type="resource" xlink:label="label_DocumentQuarterlyReport" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentQuarterlyReport" xml:lang="en-US" id="label_DocumentQuarterlyReport">Document Quarterly Report</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentQuarterlyReport" xlink:to="label_DocumentQuarterlyReport" xlink:title="Label : DocumentQuarterlyReport to label_DocumentQuarterlyReport" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_LocalPhoneNumber" xlink:label="LocalPhoneNumber" xlink:title="LocalPhoneNumber" />
    <link:label xlink:type="resource" xlink:label="label_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LocalPhoneNumber" xml:lang="en-US" id="label_LocalPhoneNumber">Local Phone Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LocalPhoneNumber" xlink:to="label_LocalPhoneNumber" xlink:title="Label : LocalPhoneNumber to label_LocalPhoneNumber" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_CityAreaCode" xlink:label="CityAreaCode" xlink:title="CityAreaCode" />
    <link:label xlink:type="resource" xlink:label="label_CityAreaCode" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CityAreaCode" xml:lang="en-US" id="label_CityAreaCode">City Area Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CityAreaCode" xlink:to="label_CityAreaCode" xlink:title="Label : CityAreaCode to label_CityAreaCode" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityTaxIdentificationNumber" xlink:label="EntityTaxIdentificationNumber" xlink:title="EntityTaxIdentificationNumber" />
    <link:label xlink:type="resource" xlink:label="label_EntityTaxIdentificationNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityTaxIdentificationNumber" xml:lang="en-US" id="label_EntityTaxIdentificationNumber">Entity Tax Identification Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityTaxIdentificationNumber" xlink:to="label_EntityTaxIdentificationNumber" xlink:title="Label : EntityTaxIdentificationNumber to label_EntityTaxIdentificationNumber" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityAddressPostalZipCode" xlink:label="EntityAddressPostalZipCode" xlink:title="EntityAddressPostalZipCode" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressPostalZipCode" xml:lang="en-US" id="label_EntityAddressPostalZipCode">Entity Address, Postal Zip Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressPostalZipCode" xlink:to="label_EntityAddressPostalZipCode" xlink:title="Label : EntityAddressPostalZipCode to label_EntityAddressPostalZipCode" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityAddressCityOrTown" xlink:label="EntityAddressCityOrTown" xlink:title="EntityAddressCityOrTown" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressCityOrTown" xml:lang="en-US" id="label_EntityAddressCityOrTown">Entity Address, City or Town</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressCityOrTown" xlink:to="label_EntityAddressCityOrTown" xlink:title="Label : EntityAddressCityOrTown to label_EntityAddressCityOrTown" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityAddressAddressLine1" xlink:label="EntityAddressAddressLine1" xlink:title="EntityAddressAddressLine1" />
    <link:label xlink:type="resource" xlink:label="label_EntityAddressAddressLine1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityAddressAddressLine1" xml:lang="en-US" id="label_EntityAddressAddressLine1">Entity Address, Address Line One</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityAddressAddressLine1" xlink:to="label_EntityAddressAddressLine1" xlink:title="Label : EntityAddressAddressLine1 to label_EntityAddressAddressLine1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="EntityIncorporationStateCountryCode" xlink:title="EntityIncorporationStateCountryCode" />
    <link:label xlink:type="resource" xlink:label="label_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityIncorporationStateCountryCode" xml:lang="en-US" id="label_EntityIncorporationStateCountryCode">Entity Incorporation, State or Country Code</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityIncorporationStateCountryCode" xlink:to="label_EntityIncorporationStateCountryCode" xlink:title="Label : EntityIncorporationStateCountryCode to label_EntityIncorporationStateCountryCode" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityFileNumber" xlink:label="EntityFileNumber" xlink:title="EntityFileNumber" />
    <link:label xlink:type="resource" xlink:label="label_EntityFileNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityFileNumber" xml:lang="en-US" id="label_EntityFileNumber">Entity File Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityFileNumber" xlink:to="label_EntityFileNumber" xlink:title="Label : EntityFileNumber to label_EntityFileNumber" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="LongTermDebtNoncurrent" xlink:title="LongTermDebtNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtNoncurrent" xml:lang="en-US" id="label_LongTermDebtNoncurrent">Long-term debt, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtNoncurrent" xlink:to="label_LongTermDebtNoncurrent" xlink:title="Label : LongTermDebtNoncurrent to label_LongTermDebtNoncurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNoncurrentAbstract" xlink:label="InventoryNoncurrentAbstract" xlink:title="InventoryNoncurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryNoncurrentAbstract" xml:lang="en-US" id="label_InventoryNoncurrentAbstract">Long-term:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNoncurrentAbstract" xlink:to="label_InventoryNoncurrentAbstract" xlink:title="Label : InventoryNoncurrentAbstract to label_InventoryNoncurrentAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNetAbstract" xlink:label="InventoryNetAbstract" xlink:title="InventoryNetAbstract" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNetAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryNetAbstract" xml:lang="en-US" id="label_InventoryNetAbstract">Current:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNetAbstract" xlink:to="label_InventoryNetAbstract" xlink:title="Label : InventoryNetAbstract to label_InventoryNetAbstract" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrentAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryNoncurrentAbstract_1" xml:lang="en-US" id="label_InventoryNoncurrentAbstract_1">Inventory, Noncurrent [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNoncurrentAbstract" xlink:to="label_InventoryNoncurrentAbstract_1" xlink:title="Label : InventoryNoncurrentAbstract to label_InventoryNoncurrentAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNetAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryNetAbstract_1" xml:lang="en-US" id="label_InventoryNetAbstract_1">Inventory, Net [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNetAbstract" xlink:to="label_InventoryNetAbstract_1" xlink:title="Label : InventoryNetAbstract to label_InventoryNetAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:label="OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:title="OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" />
    <link:label xlink:type="resource" xlink:label="label_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xml:lang="en-US" id="label_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax">Unrealized loss on available-for-sale securities, net of tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:to="label_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:title="Label : OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax to label_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <link:label xlink:type="resource" xlink:label="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xml:lang="en-US" id="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="Label : AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount to label_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxesReceivable" xlink:label="IncomeTaxesReceivable" xlink:title="IncomeTaxesReceivable" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeTaxesReceivable" xml:lang="en-US" id="label_IncomeTaxesReceivable">Income tax receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesReceivable" xlink:to="label_IncomeTaxesReceivable" xlink:title="Label : IncomeTaxesReceivable to label_IncomeTaxesReceivable" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesReceivable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxesReceivable_1" xml:lang="en-US" id="label_IncomeTaxesReceivable_1">Income Taxes Receivable, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesReceivable" xlink:to="label_IncomeTaxesReceivable_1" xlink:title="Label : IncomeTaxesReceivable to label_IncomeTaxesReceivable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" xlink:label="StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" xlink:title="StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments">Issue of common stock and warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" xlink:to="label_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" xlink:title="Label : StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments to label_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" xlink:label="ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" xlink:title="ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" xml:lang="en-US" id="label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock">Schedule of paycheck protection program loan liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" xlink:to="label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" xlink:title="Label : ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock to label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock_1" xml:lang="en-US" id="label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock_1">Schedule of Paycheck Protection Program Loan Liabilities [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock" xlink:to="label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock_1" xlink:title="Label : ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock to label_ScheduleOfPaycheckProtectionProgramLoanLiabilitiesTableTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="WeightedAverageNumberOfDilutedSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_WeightedAverageNumberOfDilutedSharesOutstanding" xml:lang="en-US" id="label_WeightedAverageNumberOfDilutedSharesOutstanding">Diluted weighted average shares outstanding (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="label_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="Label : WeightedAverageNumberOfDilutedSharesOutstanding to label_WeightedAverageNumberOfDilutedSharesOutstanding" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="NetCashProvidedByUsedInOperatingActivities" xlink:title="NetCashProvidedByUsedInOperatingActivities" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_NetCashProvidedByUsedInOperatingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivities">Net cash used in operating activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:to="label_NetCashProvidedByUsedInOperatingActivities" xlink:title="Label : NetCashProvidedByUsedInOperatingActivities to label_NetCashProvidedByUsedInOperatingActivities" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="ShortTermBorrowings" xlink:title="ShortTermBorrowings" />
    <link:label xlink:type="resource" xlink:label="label_ShortTermBorrowings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShortTermBorrowings" xml:lang="en-US" id="label_ShortTermBorrowings">Short-term Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermBorrowings" xlink:to="label_ShortTermBorrowings" xlink:title="Label : ShortTermBorrowings to label_ShortTermBorrowings" />
    <link:label xlink:type="resource" xlink:label="label_ShortTermBorrowings_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShortTermBorrowings_1" xml:lang="en-US" id="label_ShortTermBorrowings_1">Short-term&#xA0;debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermBorrowings" xlink:to="label_ShortTermBorrowings_1" xlink:title="Label : ShortTermBorrowings to label_ShortTermBorrowings_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="LoansPayableMember" xlink:title="LoansPayableMember" />
    <link:label xlink:type="resource" xlink:label="label_LoansPayableMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LoansPayableMember" xml:lang="en-US" id="label_LoansPayableMember">Loans Payable [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LoansPayableMember" xlink:to="label_LoansPayableMember" xlink:title="Label : LoansPayableMember to label_LoansPayableMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="DebtInstrumentAxis" xlink:title="DebtInstrumentAxis" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentAxis" xml:lang="en-US" id="label_DebtInstrumentAxis">Debt Instrument [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentAxis" xlink:to="label_DebtInstrumentAxis" xlink:title="Label : DebtInstrumentAxis to label_DebtInstrumentAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain" xlink:title="DebtInstrumentNameDomain" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentNameDomain" xml:lang="en-US" id="label_DebtInstrumentNameDomain">Debt Instrument, Name [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentNameDomain" xlink:to="label_DebtInstrumentNameDomain" xlink:title="Label : DebtInstrumentNameDomain to label_DebtInstrumentNameDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="SubsequentEventLineItems" xlink:title="SubsequentEventLineItems" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventLineItems" xml:lang="en-US" id="label_SubsequentEventLineItems">Subsequent Event [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventLineItems" xlink:to="label_SubsequentEventLineItems" xlink:title="Label : SubsequentEventLineItems to label_SubsequentEventLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfUnsecuredDebt" xlink:label="ProceedsFromIssuanceOfUnsecuredDebt" xlink:title="ProceedsFromIssuanceOfUnsecuredDebt" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfUnsecuredDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromIssuanceOfUnsecuredDebt" xml:lang="en-US" id="label_ProceedsFromIssuanceOfUnsecuredDebt">Proceeds from Issuance of Unsecured Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfUnsecuredDebt" xlink:to="label_ProceedsFromIssuanceOfUnsecuredDebt" xlink:title="Label : ProceedsFromIssuanceOfUnsecuredDebt to label_ProceedsFromIssuanceOfUnsecuredDebt" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateStatedPercentage_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentInterestRateStatedPercentage_1" xml:lang="en-US" id="label_DebtInstrumentInterestRateStatedPercentage_1">Interest rate of the loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateStatedPercentage" xlink:to="label_DebtInstrumentInterestRateStatedPercentage_1" xlink:title="Label : DebtInstrumentInterestRateStatedPercentage to label_DebtInstrumentInterestRateStatedPercentage_1" />
    <link:label xlink:type="resource" xlink:label="label_LoansPayableMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LoansPayableMember_1" xml:lang="en-US" id="label_LoansPayableMember_1">Paycheck Protection Program Loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LoansPayableMember" xlink:to="label_LoansPayableMember_1" xlink:title="Label : LoansPayableMember to label_LoansPayableMember_1" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SubsequentEventLineItems_1" xml:lang="en-US" id="label_SubsequentEventLineItems_1">Subsequent events</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventLineItems" xlink:to="label_SubsequentEventLineItems_1" xlink:title="Label : SubsequentEventLineItems to label_SubsequentEventLineItems_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="SubsequentEventMember" xlink:title="SubsequentEventMember" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SubsequentEventMember" xml:lang="en-US" id="label_SubsequentEventMember">Subsequent events</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventMember" xlink:to="label_SubsequentEventMember" xlink:title="Label : SubsequentEventMember to label_SubsequentEventMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts" xlink:label="AmortizationOfFinancingCostsAndDiscounts" xlink:title="AmortizationOfFinancingCostsAndDiscounts" />
    <link:label xlink:type="resource" xlink:label="label_AmortizationOfFinancingCostsAndDiscounts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmortizationOfFinancingCostsAndDiscounts" xml:lang="en-US" id="label_AmortizationOfFinancingCostsAndDiscounts">Amortization of Debt Issuance Costs and Discounts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizationOfFinancingCostsAndDiscounts" xlink:to="label_AmortizationOfFinancingCostsAndDiscounts" xlink:title="Label : AmortizationOfFinancingCostsAndDiscounts to label_AmortizationOfFinancingCostsAndDiscounts" />
    <link:label xlink:type="resource" xlink:label="label_AmortizationOfFinancingCostsAndDiscounts_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AmortizationOfFinancingCostsAndDiscounts_1" xml:lang="en-US" id="label_AmortizationOfFinancingCostsAndDiscounts_1">Amortization of debt discount and issuance costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizationOfFinancingCostsAndDiscounts" xlink:to="label_AmortizationOfFinancingCostsAndDiscounts_1" xlink:title="Label : AmortizationOfFinancingCostsAndDiscounts to label_AmortizationOfFinancingCostsAndDiscounts_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtByMaturityAbstract" xlink:label="LongTermDebtByMaturityAbstract" xlink:title="LongTermDebtByMaturityAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtByMaturityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtByMaturityAbstract" xml:lang="en-US" id="label_LongTermDebtByMaturityAbstract">Long-term Debt, Fiscal Year Maturity [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtByMaturityAbstract" xlink:to="label_LongTermDebtByMaturityAbstract" xlink:title="Label : LongTermDebtByMaturityAbstract to label_LongTermDebtByMaturityAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xml:lang="en-US" id="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths">Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:to="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:title="Label : LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths to label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_1" xml:lang="en-US" id="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_1">2022</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:to="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_1" xlink:title="Label : LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths to label_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xml:lang="en-US" id="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo">Long-term Debt, Maturities, Repayments of Principal in Year Two</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:to="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:title="Label : LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo to label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xml:lang="en-US" id="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree">Long-term Debt, Maturities, Repayments of Principal in Year Three</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:to="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:title="Label : LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree to label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtByMaturityAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtByMaturityAbstract_1" xml:lang="en-US" id="label_LongTermDebtByMaturityAbstract_1">Senior Convertible Notes, Principal Amount Maturing</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtByMaturityAbstract" xlink:to="label_LongTermDebtByMaturityAbstract_1" xlink:title="Label : LongTermDebtByMaturityAbstract to label_LongTermDebtByMaturityAbstract_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityInteractiveDataCurrent" xlink:label="EntityInteractiveDataCurrent" xlink:title="EntityInteractiveDataCurrent" />
    <link:label xlink:type="resource" xlink:label="label_EntityInteractiveDataCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityInteractiveDataCurrent" xml:lang="en-US" id="label_EntityInteractiveDataCurrent">Entity Interactive Data Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityInteractiveDataCurrent" xlink:to="label_EntityInteractiveDataCurrent" xlink:title="Label : EntityInteractiveDataCurrent to label_EntityInteractiveDataCurrent" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_WarrantsCarryingAmount" xlink:label="WarrantsCarryingAmount" xlink:title="WarrantsCarryingAmount" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsCarryingAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantsCarryingAmount" xml:lang="en-US" id="label_WarrantsCarryingAmount">Amount of warrants, including conversion feature of warrants.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsCarryingAmount" xlink:to="label_WarrantsCarryingAmount" xlink:title="Label : WarrantsCarryingAmount to label_WarrantsCarryingAmount" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsCarryingAmount_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsCarryingAmount_1" xml:lang="en-US" id="label_WarrantsCarryingAmount_1">Warrants Carrying Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsCarryingAmount" xlink:to="label_WarrantsCarryingAmount_1" xlink:title="Label : WarrantsCarryingAmount to label_WarrantsCarryingAmount_1" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_WarrantsAndRightsOutstandingPercentage" xlink:label="WarrantsAndRightsOutstandingPercentage" xlink:title="WarrantsAndRightsOutstandingPercentage" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstandingPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndRightsOutstandingPercentage" xml:lang="en-US" id="label_WarrantsAndRightsOutstandingPercentage">Warrants and Rights Outstanding Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstandingPercentage" xlink:to="label_WarrantsAndRightsOutstandingPercentage" xlink:title="Label : WarrantsAndRightsOutstandingPercentage to label_WarrantsAndRightsOutstandingPercentage" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstandingPercentage_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WarrantsAndRightsOutstandingPercentage_1" xml:lang="en-US" id="label_WarrantsAndRightsOutstandingPercentage_1">Interest rate assumption used in valuing an instrument.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstandingPercentage" xlink:to="label_WarrantsAndRightsOutstandingPercentage_1" xlink:title="Label : WarrantsAndRightsOutstandingPercentage to label_WarrantsAndRightsOutstandingPercentage_1" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_1" xml:lang="en-US" id="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_1">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:to="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_1" xlink:title="Label : LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo to label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_1" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_1" xml:lang="en-US" id="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_1">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:to="label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_1" xlink:title="Label : LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree to label_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="DebtInstrumentCarryingAmount" xlink:title="DebtInstrumentCarryingAmount" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentCarryingAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentCarryingAmount" xml:lang="en-US" id="label_DebtInstrumentCarryingAmount">Principal</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentCarryingAmount" xlink:to="label_DebtInstrumentCarryingAmount" xlink:title="Label : DebtInstrumentCarryingAmount to label_DebtInstrumentCarryingAmount" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsCarryingAmount_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsCarryingAmount_2" xml:lang="en-US" id="label_WarrantsCarryingAmount_2">Warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsCarryingAmount" xlink:to="label_WarrantsCarryingAmount_2" xlink:title="Label : WarrantsCarryingAmount to label_WarrantsCarryingAmount_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="SubsequentEventTable" xlink:title="SubsequentEventTable" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTable" xml:lang="en-US" id="label_SubsequentEventTable">Subsequent Event [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTable" xlink:to="label_SubsequentEventTable" xlink:title="Label : SubsequentEventTable to label_SubsequentEventTable" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_WarrantsAbstract" xlink:label="WarrantsAbstract" xlink:title="WarrantsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAbstract" xml:lang="en-US" id="label_WarrantsAbstract">Warrants [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAbstract" xlink:to="label_WarrantsAbstract" xlink:title="Label : WarrantsAbstract to label_WarrantsAbstract" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_WarrantInstrumentConvertibleBeneficialConversionFeature" xlink:label="WarrantInstrumentConvertibleBeneficialConversionFeature" xlink:title="WarrantInstrumentConvertibleBeneficialConversionFeature" />
    <link:label xlink:type="resource" xlink:label="label_WarrantInstrumentConvertibleBeneficialConversionFeature" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantInstrumentConvertibleBeneficialConversionFeature" xml:lang="en-US" id="label_WarrantInstrumentConvertibleBeneficialConversionFeature">Warrant Instrument Convertible Beneficial Conversion Feature</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantInstrumentConvertibleBeneficialConversionFeature" xlink:to="label_WarrantInstrumentConvertibleBeneficialConversionFeature" xlink:title="Label : WarrantInstrumentConvertibleBeneficialConversionFeature to label_WarrantInstrumentConvertibleBeneficialConversionFeature" />
    <link:label xlink:type="resource" xlink:label="label_WarrantInstrumentConvertibleBeneficialConversionFeature_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantInstrumentConvertibleBeneficialConversionFeature_1" xml:lang="en-US" id="label_WarrantInstrumentConvertibleBeneficialConversionFeature_1">Conversion feature</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantInstrumentConvertibleBeneficialConversionFeature" xlink:to="label_WarrantInstrumentConvertibleBeneficialConversionFeature_1" xlink:title="Label : WarrantInstrumentConvertibleBeneficialConversionFeature to label_WarrantInstrumentConvertibleBeneficialConversionFeature_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WarrantsAndRightsOutstanding" xlink:label="WarrantsAndRightsOutstanding" xlink:title="WarrantsAndRightsOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstanding" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_WarrantsAndRightsOutstanding" xml:lang="en-US" id="label_WarrantsAndRightsOutstanding">Net carrying amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstanding" xlink:to="label_WarrantsAndRightsOutstanding" xlink:title="Label : WarrantsAndRightsOutstanding to label_WarrantsAndRightsOutstanding" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtAbstract" xlink:label="LongTermDebtAbstract" xlink:title="LongTermDebtAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtAbstract" xml:lang="en-US" id="label_LongTermDebtAbstract">Liability component:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtAbstract" xlink:to="label_LongTermDebtAbstract" xlink:title="Label : LongTermDebtAbstract to label_LongTermDebtAbstract" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentCarryingAmount_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentCarryingAmount_1" xml:lang="en-US" id="label_DebtInstrumentCarryingAmount_1">Long-term Debt, Gross</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentCarryingAmount" xlink:to="label_DebtInstrumentCarryingAmount_1" xlink:title="Label : DebtInstrumentCarryingAmount to label_DebtInstrumentCarryingAmount_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt" xlink:label="LongTermDebt" xlink:title="LongTermDebt" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebt" xml:lang="en-US" id="label_LongTermDebt">Long-term Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebt" xlink:to="label_LongTermDebt" xlink:title="Label : LongTermDebt to label_LongTermDebt" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstanding_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndRightsOutstanding_1" xml:lang="en-US" id="label_WarrantsAndRightsOutstanding_1">Warrants and Rights Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstanding" xlink:to="label_WarrantsAndRightsOutstanding_1" xlink:title="Label : WarrantsAndRightsOutstanding to label_WarrantsAndRightsOutstanding_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="SubsequentEventTypeAxis" xlink:title="SubsequentEventTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTypeAxis" xml:lang="en-US" id="label_SubsequentEventTypeAxis">Subsequent Event Type [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTypeAxis" xlink:to="label_SubsequentEventTypeAxis" xlink:title="Label : SubsequentEventTypeAxis to label_SubsequentEventTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstandingPercentage_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsAndRightsOutstandingPercentage_2" xml:lang="en-US" id="label_WarrantsAndRightsOutstandingPercentage_2">Warrants, assumptions rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstandingPercentage" xlink:to="label_WarrantsAndRightsOutstandingPercentage_2" xlink:title="Label : WarrantsAndRightsOutstandingPercentage to label_WarrantsAndRightsOutstandingPercentage_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpense" xlink:label="InterestExpense" xlink:title="InterestExpense" />
    <link:label xlink:type="resource" xlink:label="label_InterestExpense" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_InterestExpense" xml:lang="en-US" id="label_InterestExpense">Interest expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpense" xlink:to="label_InterestExpense" xlink:title="Label : InterestExpense to label_InterestExpense" />
    <link:label xlink:type="resource" xlink:label="label_InterestExpense_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestExpense_1" xml:lang="en-US" id="label_InterestExpense_1">Interest Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpense" xlink:to="label_InterestExpense_1" xlink:title="Label : InterestExpense to label_InterestExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="SubsequentEventsAbstract" xlink:title="SubsequentEventsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventsAbstract" xml:lang="en-US" id="label_SubsequentEventsAbstract">Subsequent events</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventsAbstract" xlink:to="label_SubsequentEventsAbstract" xlink:title="Label : SubsequentEventsAbstract to label_SubsequentEventsAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="SubsequentEventsTextBlock" xlink:title="SubsequentEventsTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventsTextBlock" xml:lang="en-US" id="label_SubsequentEventsTextBlock">Subsequent Events [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventsTextBlock" xlink:to="label_SubsequentEventsTextBlock" xlink:title="Label : SubsequentEventsTextBlock to label_SubsequentEventsTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventsTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SubsequentEventsTextBlock_1" xml:lang="en-US" id="label_SubsequentEventsTextBlock_1">Subsequent events</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventsTextBlock" xlink:to="label_SubsequentEventsTextBlock_1" xlink:title="Label : SubsequentEventsTextBlock to label_SubsequentEventsTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertibleLongTermNotesPayable" xlink:label="ConvertibleLongTermNotesPayable" xlink:title="ConvertibleLongTermNotesPayable" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleLongTermNotesPayable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConvertibleLongTermNotesPayable" xml:lang="en-US" id="label_ConvertibleLongTermNotesPayable">Long-term portion of liability component included under long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleLongTermNotesPayable" xlink:to="label_ConvertibleLongTermNotesPayable" xlink:title="Label : ConvertibleLongTermNotesPayable to label_ConvertibleLongTermNotesPayable" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleLongTermNotesPayable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleLongTermNotesPayable_1" xml:lang="en-US" id="label_ConvertibleLongTermNotesPayable_1">Convertible Notes Payable, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleLongTermNotesPayable" xlink:to="label_ConvertibleLongTermNotesPayable_1" xlink:title="Label : ConvertibleLongTermNotesPayable to label_ConvertibleLongTermNotesPayable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_SecurityExchangeName" xlink:label="SecurityExchangeName" xlink:title="SecurityExchangeName" />
    <link:label xlink:type="resource" xlink:label="label_SecurityExchangeName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SecurityExchangeName" xml:lang="en-US" id="label_SecurityExchangeName">Security Exchange Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SecurityExchangeName" xlink:to="label_SecurityExchangeName" xlink:title="Label : SecurityExchangeName to label_SecurityExchangeName" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="InterestPaidNet" xlink:title="InterestPaidNet" />
    <link:label xlink:type="resource" xlink:label="label_InterestPaidNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InterestPaidNet" xml:lang="en-US" id="label_InterestPaidNet">Cash paid for interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPaidNet" xlink:to="label_InterestPaidNet" xlink:title="Label : InterestPaidNet to label_InterestPaidNet" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="SubsequentEventTypeDomain" xlink:title="SubsequentEventTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventTypeDomain" xml:lang="en-US" id="label_SubsequentEventTypeDomain">Subsequent Event Type [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventTypeDomain" xlink:to="label_SubsequentEventTypeDomain" xlink:title="Label : SubsequentEventTypeDomain to label_SubsequentEventTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_SubsequentEventMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SubsequentEventMember_1" xml:lang="en-US" id="label_SubsequentEventMember_1">Subsequent Event [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SubsequentEventMember" xlink:to="label_SubsequentEventMember_1" xlink:title="Label : SubsequentEventMember to label_SubsequentEventMember_1" />
    <link:label xlink:type="resource" xlink:label="label_InterestPaidNet_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InterestPaidNet_1" xml:lang="en-US" id="label_InterestPaidNet_1">Interest Paid, Excluding Capitalized Interest, Operating Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestPaidNet" xlink:to="label_InterestPaidNet_1" xlink:title="Label : InterestPaidNet to label_InterestPaidNet_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="ProceedsFromIssuanceOfLongTermDebt" xlink:title="ProceedsFromIssuanceOfLongTermDebt" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfLongTermDebt" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ProceedsFromIssuanceOfLongTermDebt" xml:lang="en-US" id="label_ProceedsFromIssuanceOfLongTermDebt">Net proceeds from Paycheck Protection Program loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfLongTermDebt" xlink:to="label_ProceedsFromIssuanceOfLongTermDebt" xlink:title="Label : ProceedsFromIssuanceOfLongTermDebt to label_ProceedsFromIssuanceOfLongTermDebt" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtNoncurrent_1" xml:lang="en-US" id="label_LongTermDebtNoncurrent_1">Long-term Debt, Excluding Current Maturities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtNoncurrent" xlink:to="label_LongTermDebtNoncurrent_1" xlink:title="Label : LongTermDebtNoncurrent to label_LongTermDebtNoncurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfUnsecuredDebt_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ProceedsFromIssuanceOfUnsecuredDebt_1" xml:lang="en-US" id="label_ProceedsFromIssuanceOfUnsecuredDebt_1">Net proceeds from Paycheck Protection Program loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfUnsecuredDebt" xlink:to="label_ProceedsFromIssuanceOfUnsecuredDebt_1" xlink:title="Label : ProceedsFromIssuanceOfUnsecuredDebt to label_ProceedsFromIssuanceOfUnsecuredDebt_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="DebtInstrumentTerm" xlink:title="DebtInstrumentTerm" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentTerm" xml:lang="en-US" id="label_DebtInstrumentTerm">Debt Instrument, Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentTerm" xlink:to="label_DebtInstrumentTerm" xlink:title="Label : DebtInstrumentTerm to label_DebtInstrumentTerm" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentTerm_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DebtInstrumentTerm_1" xml:lang="en-US" id="label_DebtInstrumentTerm_1">Loan term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentTerm" xlink:to="label_DebtInstrumentTerm_1" xlink:title="Label : DebtInstrumentTerm to label_DebtInstrumentTerm_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="PropertyPlantAndEquipmentByTypeAxis" xlink:title="PropertyPlantAndEquipmentByTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentByTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentByTypeAxis" xml:lang="en-US" id="label_PropertyPlantAndEquipmentByTypeAxis">Long-Lived Tangible Asset [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentByTypeAxis" xlink:to="label_PropertyPlantAndEquipmentByTypeAxis" xlink:title="Label : PropertyPlantAndEquipmentByTypeAxis to label_PropertyPlantAndEquipmentByTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="PropertyPlantAndEquipmentTypeDomain" xlink:title="PropertyPlantAndEquipmentTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentTypeDomain" xml:lang="en-US" id="label_PropertyPlantAndEquipmentTypeDomain">Long-Lived Tangible Asset [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="label_PropertyPlantAndEquipmentTypeDomain" xlink:title="Label : PropertyPlantAndEquipmentTypeDomain to label_PropertyPlantAndEquipmentTypeDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:label="DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:title="DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xml:lang="en-US" id="label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet">Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:to="label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:title="Label : DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet to label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebt_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LongTermDebt_1" xml:lang="en-US" id="label_LongTermDebt_1">Net carrying amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebt" xlink:to="label_LongTermDebt_1" xlink:title="Label : LongTermDebt to label_LongTermDebt_1" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarrantsAbstract_1" xml:lang="en-US" id="label_WarrantsAbstract_1">Equity component:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAbstract" xlink:to="label_WarrantsAbstract_1" xlink:title="Label : WarrantsAbstract to label_WarrantsAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfUnsecuredDebt_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromIssuanceOfUnsecuredDebt_2" xml:lang="en-US" id="label_ProceedsFromIssuanceOfUnsecuredDebt_2">Proceeds of the Loan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfUnsecuredDebt" xlink:to="label_ProceedsFromIssuanceOfUnsecuredDebt_2" xlink:title="Label : ProceedsFromIssuanceOfUnsecuredDebt to label_ProceedsFromIssuanceOfUnsecuredDebt_2" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentInterestRateStatedPercentage_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentInterestRateStatedPercentage_2" xml:lang="en-US" id="label_DebtInstrumentInterestRateStatedPercentage_2">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentInterestRateStatedPercentage" xlink:to="label_DebtInstrumentInterestRateStatedPercentage_2" xlink:title="Label : DebtInstrumentInterestRateStatedPercentage to label_DebtInstrumentInterestRateStatedPercentage_2" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtAbstract_1" xml:lang="en-US" id="label_LongTermDebtAbstract_1">Long-term Debt, Unclassified [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtAbstract" xlink:to="label_LongTermDebtAbstract_1" xlink:title="Label : LongTermDebtAbstract to label_LongTermDebtAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentCarryingAmount_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_DebtInstrumentCarryingAmount_2" xml:lang="en-US" id="label_DebtInstrumentCarryingAmount_2">Total principal amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentCarryingAmount" xlink:to="label_DebtInstrumentCarryingAmount_2" xlink:title="Label : DebtInstrumentCarryingAmount to label_DebtInstrumentCarryingAmount_2" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1" xml:lang="en-US" id="label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1">Less: debt discount and issuance costs, net of amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:to="label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1" xlink:title="Label : DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet to label_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WarrantsAndRightsOutstandingTerm" xlink:label="WarrantsAndRightsOutstandingTerm" xlink:title="WarrantsAndRightsOutstandingTerm" />
    <link:label xlink:type="resource" xlink:label="label_WarrantsAndRightsOutstandingTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantsAndRightsOutstandingTerm" xml:lang="en-US" id="label_WarrantsAndRightsOutstandingTerm">Warrants and Rights Outstanding, Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantsAndRightsOutstandingTerm" xlink:to="label_WarrantsAndRightsOutstandingTerm" xlink:title="Label : WarrantsAndRightsOutstandingTerm to label_WarrantsAndRightsOutstandingTerm" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:title="LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear">Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear to label_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryWriteDown" xlink:label="InventoryWriteDown" xlink:title="InventoryWriteDown" />
    <link:label xlink:type="resource" xlink:label="label_InventoryWriteDown" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_InventoryWriteDown" xml:lang="en-US" id="label_InventoryWriteDown">Net loss incurred on valuation of inventory at lower of cost or market value and write-off of obsolete inventory</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryWriteDown" xlink:to="label_InventoryWriteDown" xlink:title="Label : InventoryWriteDown to label_InventoryWriteDown" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertibleNotesPayableCurrent" xlink:label="ConvertibleNotesPayableCurrent" xlink:title="ConvertibleNotesPayableCurrent" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleNotesPayableCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleNotesPayableCurrent" xml:lang="en-US" id="label_ConvertibleNotesPayableCurrent">Convertible Notes Payable, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleNotesPayableCurrent" xlink:to="label_ConvertibleNotesPayableCurrent" xlink:title="Label : ConvertibleNotesPayableCurrent to label_ConvertibleNotesPayableCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_IndustrialPropertyMember" xlink:label="IndustrialPropertyMember" xlink:title="IndustrialPropertyMember" />
    <link:label xlink:type="resource" xlink:label="label_IndustrialPropertyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IndustrialPropertyMember" xml:lang="en-US" id="label_IndustrialPropertyMember">Industrial Property [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndustrialPropertyMember" xlink:to="label_IndustrialPropertyMember" xlink:title="Label : IndustrialPropertyMember to label_IndustrialPropertyMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeasesAbstract" xlink:label="LeasesAbstract" xlink:title="LeasesAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LeasesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LeasesAbstract" xml:lang="en-US" id="label_LeasesAbstract">Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasesAbstract" xlink:to="label_LeasesAbstract" xlink:title="Label : LeasesAbstract to label_LeasesAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="IncomeTaxDisclosureTextBlock" xlink:title="IncomeTaxDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeTaxDisclosureTextBlock" xml:lang="en-US" id="label_IncomeTaxDisclosureTextBlock">Income Taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureTextBlock" xlink:to="label_IncomeTaxDisclosureTextBlock" xlink:title="Label : IncomeTaxDisclosureTextBlock to label_IncomeTaxDisclosureTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityRegistrantName" xlink:label="EntityRegistrantName" xlink:title="EntityRegistrantName" />
    <link:label xlink:type="resource" xlink:label="label_EntityRegistrantName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityRegistrantName" xml:lang="en-US" id="label_EntityRegistrantName">Entity Registrant Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityRegistrantName" xlink:to="label_EntityRegistrantName" xlink:title="Label : EntityRegistrantName to label_EntityRegistrantName" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityCentralIndexKey" xlink:label="EntityCentralIndexKey" xlink:title="EntityCentralIndexKey" />
    <link:label xlink:type="resource" xlink:label="label_EntityCentralIndexKey" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCentralIndexKey" xml:lang="en-US" id="label_EntityCentralIndexKey">Entity Central Index Key</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCentralIndexKey" xlink:to="label_EntityCentralIndexKey" xlink:title="Label : EntityCentralIndexKey to label_EntityCentralIndexKey" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_TradingSymbol" xlink:label="TradingSymbol" xlink:title="TradingSymbol" />
    <link:label xlink:type="resource" xlink:label="label_TradingSymbol" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TradingSymbol" xml:lang="en-US" id="label_TradingSymbol">Trading Symbol</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TradingSymbol" xlink:to="label_TradingSymbol" xlink:title="Label : TradingSymbol to label_TradingSymbol" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_CurrentFiscalYearEndDate" xlink:label="CurrentFiscalYearEndDate" xlink:title="CurrentFiscalYearEndDate" />
    <link:label xlink:type="resource" xlink:label="label_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CurrentFiscalYearEndDate" xml:lang="en-US" id="label_CurrentFiscalYearEndDate">Current Fiscal Year End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentFiscalYearEndDate" xlink:to="label_CurrentFiscalYearEndDate" xlink:title="Label : CurrentFiscalYearEndDate to label_CurrentFiscalYearEndDate" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityFilerCategory" xlink:label="EntityFilerCategory" xlink:title="EntityFilerCategory" />
    <link:label xlink:type="resource" xlink:label="label_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityFilerCategory" xml:lang="en-US" id="label_EntityFilerCategory">Entity Filer Category</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityFilerCategory" xlink:to="label_EntityFilerCategory" xlink:title="Label : EntityFilerCategory to label_EntityFilerCategory" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityCurrentReportingStatus" xlink:label="EntityCurrentReportingStatus" xlink:title="EntityCurrentReportingStatus" />
    <link:label xlink:type="resource" xlink:label="label_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCurrentReportingStatus" xml:lang="en-US" id="label_EntityCurrentReportingStatus">Entity Current Reporting Status</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCurrentReportingStatus" xlink:to="label_EntityCurrentReportingStatus" xlink:title="Label : EntityCurrentReportingStatus to label_EntityCurrentReportingStatus" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityEmergingGrowthCompany" xlink:label="EntityEmergingGrowthCompany" xlink:title="EntityEmergingGrowthCompany" />
    <link:label xlink:type="resource" xlink:label="label_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityEmergingGrowthCompany" xml:lang="en-US" id="label_EntityEmergingGrowthCompany">Entity Emerging Growth Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityEmergingGrowthCompany" xlink:to="label_EntityEmergingGrowthCompany" xlink:title="Label : EntityEmergingGrowthCompany to label_EntityEmergingGrowthCompany" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntitySmallBusiness" xlink:label="EntitySmallBusiness" xlink:title="EntitySmallBusiness" />
    <link:label xlink:type="resource" xlink:label="label_EntitySmallBusiness" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntitySmallBusiness" xml:lang="en-US" id="label_EntitySmallBusiness">Entity Small Business</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntitySmallBusiness" xlink:to="label_EntitySmallBusiness" xlink:title="Label : EntitySmallBusiness to label_EntitySmallBusiness" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="EntityCommonStockSharesOutstanding" xlink:title="EntityCommonStockSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_EntityCommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityCommonStockSharesOutstanding" xml:lang="en-US" id="label_EntityCommonStockSharesOutstanding">Entity Common Stock, Shares Outstanding (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCommonStockSharesOutstanding" xlink:to="label_EntityCommonStockSharesOutstanding" xlink:title="Label : EntityCommonStockSharesOutstanding to label_EntityCommonStockSharesOutstanding" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_EntityShellCompany" xlink:label="EntityShellCompany" xlink:title="EntityShellCompany" />
    <link:label xlink:type="resource" xlink:label="label_EntityShellCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EntityShellCompany" xml:lang="en-US" id="label_EntityShellCompany">Entity Shell Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityShellCompany" xlink:to="label_EntityShellCompany" xlink:title="Label : EntityShellCompany to label_EntityShellCompany" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_DocumentType" xlink:label="DocumentType" xlink:title="DocumentType" />
    <link:label xlink:type="resource" xlink:label="label_DocumentType" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentType" xml:lang="en-US" id="label_DocumentType">Document Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentType" xlink:to="label_DocumentType" xlink:title="Label : DocumentType to label_DocumentType" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_DocumentPeriodEndDate" xlink:label="DocumentPeriodEndDate" xlink:title="DocumentPeriodEndDate" />
    <link:label xlink:type="resource" xlink:label="label_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentPeriodEndDate" xml:lang="en-US" id="label_DocumentPeriodEndDate">Document Period End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentPeriodEndDate" xlink:to="label_DocumentPeriodEndDate" xlink:title="Label : DocumentPeriodEndDate to label_DocumentPeriodEndDate" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_DocumentFiscalYearFocus" xlink:label="DocumentFiscalYearFocus" xlink:title="DocumentFiscalYearFocus" />
    <link:label xlink:type="resource" xlink:label="label_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentFiscalYearFocus" xml:lang="en-US" id="label_DocumentFiscalYearFocus">Document Fiscal Year Focus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentFiscalYearFocus" xlink:to="label_DocumentFiscalYearFocus" xlink:title="Label : DocumentFiscalYearFocus to label_DocumentFiscalYearFocus" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="DocumentFiscalPeriodFocus" xlink:title="DocumentFiscalPeriodFocus" />
    <link:label xlink:type="resource" xlink:label="label_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DocumentFiscalPeriodFocus" xml:lang="en-US" id="label_DocumentFiscalPeriodFocus">Document Fiscal Period Focus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentFiscalPeriodFocus" xlink:to="label_DocumentFiscalPeriodFocus" xlink:title="Label : DocumentFiscalPeriodFocus to label_DocumentFiscalPeriodFocus" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_AmendmentFlag" xlink:label="AmendmentFlag" xlink:title="AmendmentFlag" />
    <link:label xlink:type="resource" xlink:label="label_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmendmentFlag" xml:lang="en-US" id="label_AmendmentFlag">Amendment Flag</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmendmentFlag" xlink:to="label_AmendmentFlag" xlink:title="Label : AmendmentFlag to label_AmendmentFlag" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2021/dei-2021.xsd#dei_Security12bTitle" xlink:label="Security12bTitle" xlink:title="Security12bTitle" />
    <link:label xlink:type="resource" xlink:label="label_Security12bTitle" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Security12bTitle" xml:lang="en-US" id="label_Security12bTitle">Title of 12(b) Security</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Security12bTitle" xlink:to="label_Security12bTitle" xlink:title="Label : Security12bTitle to label_Security12bTitle" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="StatementOfFinancialPositionAbstract" xlink:title="StatementOfFinancialPositionAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StatementOfFinancialPositionAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementOfFinancialPositionAbstract" xml:lang="en-US" id="label_StatementOfFinancialPositionAbstract">Statement of Financial Position [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfFinancialPositionAbstract" xlink:to="label_StatementOfFinancialPositionAbstract" xlink:title="Label : StatementOfFinancialPositionAbstract to label_StatementOfFinancialPositionAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable" xlink:label="StatementTable" xlink:title="StatementTable" />
    <link:label xlink:type="resource" xlink:label="label_StatementTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementTable" xml:lang="en-US" id="label_StatementTable">Statement [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementTable" xlink:to="label_StatementTable" xlink:title="Label : StatementTable to label_StatementTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems" xlink:label="StatementLineItems" xlink:title="StatementLineItems" />
    <link:label xlink:type="resource" xlink:label="label_StatementLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementLineItems" xml:lang="en-US" id="label_StatementLineItems">Statement [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementLineItems" xlink:to="label_StatementLineItems" xlink:title="Label : StatementLineItems to label_StatementLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="AssetsCurrentAbstract" xlink:title="AssetsCurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AssetsCurrentAbstract" xml:lang="en-US" id="label_AssetsCurrentAbstract">Current assets:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrentAbstract" xlink:to="label_AssetsCurrentAbstract" xlink:title="Label : AssetsCurrentAbstract to label_AssetsCurrentAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="IncomeTaxesPaidNet" xlink:title="IncomeTaxesPaidNet" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesPaidNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxesPaidNet" xml:lang="en-US" id="label_IncomeTaxesPaidNet">Income Taxes Paid, Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesPaidNet" xlink:to="label_IncomeTaxesPaidNet" xlink:title="Label : IncomeTaxesPaidNet to label_IncomeTaxesPaidNet" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MarketableSecuritiesCurrent" xlink:label="MarketableSecuritiesCurrent" xlink:title="MarketableSecuritiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_MarketableSecuritiesCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MarketableSecuritiesCurrent" xml:lang="en-US" id="label_MarketableSecuritiesCurrent">Marketable securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketableSecuritiesCurrent" xlink:to="label_MarketableSecuritiesCurrent" xlink:title="Label : MarketableSecuritiesCurrent to label_MarketableSecuritiesCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="AccountsReceivableNetCurrent" xlink:title="AccountsReceivableNetCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccountsReceivableNetCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccountsReceivableNetCurrent" xml:lang="en-US" id="label_AccountsReceivableNetCurrent">Receivables, net of allowance for doubtful accounts of $506</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsReceivableNetCurrent" xlink:to="label_AccountsReceivableNetCurrent" xlink:title="Label : AccountsReceivableNetCurrent to label_AccountsReceivableNetCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNet" xlink:label="InventoryNet" xlink:title="InventoryNet" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryNet" xml:lang="en-US" id="label_InventoryNet">Inventory, Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="label_InventoryNet" xlink:title="Label : InventoryNet to label_InventoryNet" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNet_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryNet_1" xml:lang="en-US" id="label_InventoryNet_1">Inventories, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="label_InventoryNet_1" xlink:title="Label : InventoryNet to label_InventoryNet_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="PrepaidExpenseAndOtherAssetsCurrent" xlink:title="PrepaidExpenseAndOtherAssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="label_PrepaidExpenseAndOtherAssetsCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PrepaidExpenseAndOtherAssetsCurrent" xml:lang="en-US" id="label_PrepaidExpenseAndOtherAssetsCurrent">Prepaid expenses and other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaidExpenseAndOtherAssetsCurrent" xlink:to="label_PrepaidExpenseAndOtherAssetsCurrent" xlink:title="Label : PrepaidExpenseAndOtherAssetsCurrent to label_PrepaidExpenseAndOtherAssetsCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="AssetsCurrent" xlink:title="AssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_AssetsCurrent" xml:lang="en-US" id="label_AssetsCurrent">Total current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrent" xlink:to="label_AssetsCurrent" xlink:title="Label : AssetsCurrent to label_AssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetsCurrent_1" xml:lang="en-US" id="label_AssetsCurrent_1">Assets, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrent" xlink:to="label_AssetsCurrent_1" xlink:title="Label : AssetsCurrent to label_AssetsCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MarketableSecuritiesNoncurrent" xlink:label="MarketableSecuritiesNoncurrent" xlink:title="MarketableSecuritiesNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_MarketableSecuritiesNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MarketableSecuritiesNoncurrent" xml:lang="en-US" id="label_MarketableSecuritiesNoncurrent">Long-term marketable securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketableSecuritiesNoncurrent" xlink:to="label_MarketableSecuritiesNoncurrent" xlink:title="Label : MarketableSecuritiesNoncurrent to label_MarketableSecuritiesNoncurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryNoncurrent" xlink:label="InventoryNoncurrent" xlink:title="InventoryNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_InventoryNoncurrent" xml:lang="en-US" id="label_InventoryNoncurrent">Total long-term inventory</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNoncurrent" xlink:to="label_InventoryNoncurrent" xlink:title="Label : InventoryNoncurrent to label_InventoryNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryNoncurrent_1" xml:lang="en-US" id="label_InventoryNoncurrent_1">Long-term inventories, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNoncurrent" xlink:to="label_InventoryNoncurrent_1" xlink:title="Label : InventoryNoncurrent to label_InventoryNoncurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="PropertyPlantAndEquipmentNet" xlink:title="PropertyPlantAndEquipmentNet" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_PropertyPlantAndEquipmentNet" xml:lang="en-US" id="label_PropertyPlantAndEquipmentNet">Property and equipment, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentNet" xlink:to="label_PropertyPlantAndEquipmentNet" xlink:title="Label : PropertyPlantAndEquipmentNet to label_PropertyPlantAndEquipmentNet" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="OperatingLeaseRightOfUseAsset" xlink:title="OperatingLeaseRightOfUseAsset" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseRightOfUseAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseRightOfUseAsset" xml:lang="en-US" id="label_OperatingLeaseRightOfUseAsset">Operating Lease, Right-of-Use Asset</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseRightOfUseAsset" xlink:to="label_OperatingLeaseRightOfUseAsset" xlink:title="Label : OperatingLeaseRightOfUseAsset to label_OperatingLeaseRightOfUseAsset" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseRightOfUseAsset_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OperatingLeaseRightOfUseAsset_1" xml:lang="en-US" id="label_OperatingLeaseRightOfUseAsset_1">Operating lease - right of use assets, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseRightOfUseAsset" xlink:to="label_OperatingLeaseRightOfUseAsset_1" xlink:title="Label : OperatingLeaseRightOfUseAsset to label_OperatingLeaseRightOfUseAsset_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="IntangibleAssetsNetExcludingGoodwill" xlink:title="IntangibleAssetsNetExcludingGoodwill" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsNetExcludingGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IntangibleAssetsNetExcludingGoodwill" xml:lang="en-US" id="label_IntangibleAssetsNetExcludingGoodwill">Intangibles, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsNetExcludingGoodwill" xlink:to="label_IntangibleAssetsNetExcludingGoodwill" xlink:title="Label : IntangibleAssetsNetExcludingGoodwill to label_IntangibleAssetsNetExcludingGoodwill" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="OtherAssetsNoncurrent" xlink:title="OtherAssetsNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherAssetsNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherAssetsNoncurrent" xml:lang="en-US" id="label_OtherAssetsNoncurrent">Other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsNoncurrent" xlink:to="label_OtherAssetsNoncurrent" xlink:title="Label : OtherAssetsNoncurrent to label_OtherAssetsNoncurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets" xlink:label="Assets" xlink:title="Assets" />
    <link:label xlink:type="resource" xlink:label="label_Assets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_Assets" xml:lang="en-US" id="label_Assets">Total assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Assets" xlink:to="label_Assets" xlink:title="Label : Assets to label_Assets" />
    <link:label xlink:type="resource" xlink:label="label_Assets_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Assets_1" xml:lang="en-US" id="label_Assets_1">Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Assets" xlink:to="label_Assets_1" xlink:title="Label : Assets to label_Assets_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="LiabilitiesCurrentAbstract" xlink:title="LiabilitiesCurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LiabilitiesCurrentAbstract" xml:lang="en-US" id="label_LiabilitiesCurrentAbstract">Current liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrentAbstract" xlink:to="label_LiabilitiesCurrentAbstract" xlink:title="Label : LiabilitiesCurrentAbstract to label_LiabilitiesCurrentAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="AccountsPayableCurrent" xlink:title="AccountsPayableCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccountsPayableCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccountsPayableCurrent" xml:lang="en-US" id="label_AccountsPayableCurrent">Accounts payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableCurrent" xlink:to="label_AccountsPayableCurrent" xlink:title="Label : AccountsPayableCurrent to label_AccountsPayableCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="AccruedLiabilitiesCurrent" xlink:title="AccruedLiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AccruedLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccruedLiabilitiesCurrent" xml:lang="en-US" id="label_AccruedLiabilitiesCurrent">Accrued liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedLiabilitiesCurrent" xlink:to="label_AccruedLiabilitiesCurrent" xlink:title="Label : AccruedLiabilitiesCurrent to label_AccruedLiabilitiesCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent" xlink:label="ContractWithCustomerLiabilityCurrent" xlink:title="ContractWithCustomerLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_ContractWithCustomerLiabilityCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ContractWithCustomerLiabilityCurrent" xml:lang="en-US" id="label_ContractWithCustomerLiabilityCurrent">Contract with Customer, Liability, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerLiabilityCurrent" xlink:to="label_ContractWithCustomerLiabilityCurrent" xlink:title="Label : ContractWithCustomerLiabilityCurrent to label_ContractWithCustomerLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_ContractWithCustomerLiabilityCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ContractWithCustomerLiabilityCurrent_1" xml:lang="en-US" id="label_ContractWithCustomerLiabilityCurrent_1">Deferred product revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerLiabilityCurrent" xlink:to="label_ContractWithCustomerLiabilityCurrent_1" xlink:title="Label : ContractWithCustomerLiabilityCurrent to label_ContractWithCustomerLiabilityCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="LiabilitiesCurrent" xlink:title="LiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesCurrent" xml:lang="en-US" id="label_LiabilitiesCurrent">Total current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="label_LiabilitiesCurrent" xlink:title="Label : LiabilitiesCurrent to label_LiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesCurrent_1" xml:lang="en-US" id="label_LiabilitiesCurrent_1">Liabilities, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="label_LiabilitiesCurrent_1" xlink:title="Label : LiabilitiesCurrent to label_LiabilitiesCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="OperatingLeaseLiabilityNoncurrent" xlink:title="OperatingLeaseLiabilityNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseLiabilityNoncurrent" xml:lang="en-US" id="label_OperatingLeaseLiabilityNoncurrent">Operating lease liabilities, net of current portion</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityNoncurrent" xlink:to="label_OperatingLeaseLiabilityNoncurrent" xlink:title="Label : OperatingLeaseLiabilityNoncurrent to label_OperatingLeaseLiabilityNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OperatingLeaseLiabilityNoncurrent_1" xml:lang="en-US" id="label_OperatingLeaseLiabilityNoncurrent_1">Operating lease liability, net of current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityNoncurrent" xlink:to="label_OperatingLeaseLiabilityNoncurrent_1" xlink:title="Label : OperatingLeaseLiabilityNoncurrent to label_OperatingLeaseLiabilityNoncurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="OtherLiabilitiesNoncurrent" xlink:title="OtherLiabilitiesNoncurrent" />
    <link:label xlink:type="resource" xlink:label="label_OtherLiabilitiesNoncurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherLiabilitiesNoncurrent" xml:lang="en-US" id="label_OtherLiabilitiesNoncurrent">Other long-term liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLiabilitiesNoncurrent" xlink:to="label_OtherLiabilitiesNoncurrent" xlink:title="Label : OtherLiabilitiesNoncurrent to label_OtherLiabilitiesNoncurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities" xlink:label="Liabilities" xlink:title="Liabilities" />
    <link:label xlink:type="resource" xlink:label="label_Liabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_Liabilities" xml:lang="en-US" id="label_Liabilities">Total liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities" xlink:to="label_Liabilities" xlink:title="Label : Liabilities to label_Liabilities" />
    <link:label xlink:type="resource" xlink:label="label_Liabilities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_Liabilities_1" xml:lang="en-US" id="label_Liabilities_1">Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities" xlink:to="label_Liabilities_1" xlink:title="Label : Liabilities to label_Liabilities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue" xlink:label="CommonStockValue" xlink:title="CommonStockValue" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockValue" xml:lang="en-US" id="label_CommonStockValue">Common Stock, Value, Issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockValue" xlink:to="label_CommonStockValue" xlink:title="Label : CommonStockValue to label_CommonStockValue" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockValue_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockValue_1" xml:lang="en-US" id="label_CommonStockValue_1">Common stock, par value $0.001,&#xA0;50,000,000&#xA0;shares authorized,&#xA0;18,779,781&#xA0;shares issued and outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockValue" xlink:to="label_CommonStockValue_1" xlink:title="Label : CommonStockValue to label_CommonStockValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="AdditionalPaidInCapitalCommonStock" xlink:title="AdditionalPaidInCapitalCommonStock" />
    <link:label xlink:type="resource" xlink:label="label_AdditionalPaidInCapitalCommonStock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AdditionalPaidInCapitalCommonStock" xml:lang="en-US" id="label_AdditionalPaidInCapitalCommonStock">Additional paid-in capital</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdditionalPaidInCapitalCommonStock" xlink:to="label_AdditionalPaidInCapitalCommonStock" xlink:title="Label : AdditionalPaidInCapitalCommonStock to label_AdditionalPaidInCapitalCommonStock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:title="AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax">Accumulated other comprehensive loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="label_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:title="Label : AccumulatedOtherComprehensiveIncomeLossNetOfTax to label_AccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="RetainedEarningsAccumulatedDeficit" xlink:title="RetainedEarningsAccumulatedDeficit" />
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsAccumulatedDeficit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RetainedEarningsAccumulatedDeficit" xml:lang="en-US" id="label_RetainedEarningsAccumulatedDeficit">Accumulated deficit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAccumulatedDeficit" xlink:to="label_RetainedEarningsAccumulatedDeficit" xlink:title="Label : RetainedEarningsAccumulatedDeficit to label_RetainedEarningsAccumulatedDeficit" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity" xlink:title="StockholdersEquity" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_StockholdersEquity" xml:lang="en-US" id="label_StockholdersEquity">Balance, end of period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="label_StockholdersEquity" xlink:title="Label : StockholdersEquity to label_StockholdersEquity" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquity_1" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_StockholdersEquity_1" xml:lang="en-US" id="label_StockholdersEquity_1">Balance, beginning of period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="label_StockholdersEquity_1" xlink:title="Label : StockholdersEquity to label_StockholdersEquity_1" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquity_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_StockholdersEquity_2" xml:lang="en-US" id="label_StockholdersEquity_2">Total shareholders' equity</link:label>
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    <link:label xlink:type="resource" xlink:label="label_StockholdersEquity_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquity_3" xml:lang="en-US" id="label_StockholdersEquity_3">Stockholders' Equity Attributable to Parent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="label_StockholdersEquity_3" xlink:title="Label : StockholdersEquity to label_StockholdersEquity_3" />
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    <link:label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesAndStockholdersEquity" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquity">Total liabilities and shareholders' equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="label_LiabilitiesAndStockholdersEquity" xlink:title="Label : LiabilitiesAndStockholdersEquity to label_LiabilitiesAndStockholdersEquity" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquity_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesAndStockholdersEquity_1" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquity_1">Liabilities and Equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="label_LiabilitiesAndStockholdersEquity_1" xlink:title="Label : LiabilitiesAndStockholdersEquity to label_LiabilitiesAndStockholdersEquity_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="AllowanceForDoubtfulAccountsReceivableCurrent" xlink:title="AllowanceForDoubtfulAccountsReceivableCurrent" />
    <link:label xlink:type="resource" xlink:label="label_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AllowanceForDoubtfulAccountsReceivableCurrent" xml:lang="en-US" id="label_AllowanceForDoubtfulAccountsReceivableCurrent">Allowance for doubtful accounts</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllowanceForDoubtfulAccountsReceivableCurrent" xlink:to="label_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:title="Label : AllowanceForDoubtfulAccountsReceivableCurrent to label_AllowanceForDoubtfulAccountsReceivableCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="CommonStockParOrStatedValuePerShare" xlink:title="CommonStockParOrStatedValuePerShare" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockParOrStatedValuePerShare" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockParOrStatedValuePerShare" xml:lang="en-US" id="label_CommonStockParOrStatedValuePerShare">Common Stock, Par or Stated Value Per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockParOrStatedValuePerShare" xlink:to="label_CommonStockParOrStatedValuePerShare" xlink:title="Label : CommonStockParOrStatedValuePerShare to label_CommonStockParOrStatedValuePerShare" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="CommonStockSharesAuthorized" xlink:title="CommonStockSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockSharesAuthorized" xml:lang="en-US" id="label_CommonStockSharesAuthorized">Common stock, shares authorized (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesAuthorized" xlink:to="label_CommonStockSharesAuthorized" xlink:title="Label : CommonStockSharesAuthorized to label_CommonStockSharesAuthorized" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="CommonStockSharesIssued" xlink:title="CommonStockSharesIssued" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesIssued" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockSharesIssued" xml:lang="en-US" id="label_CommonStockSharesIssued">Common stock, shares issued (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesIssued" xlink:to="label_CommonStockSharesIssued" xlink:title="Label : CommonStockSharesIssued to label_CommonStockSharesIssued" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="CommonStockSharesOutstanding" xlink:title="CommonStockSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockSharesOutstanding" xml:lang="en-US" id="label_CommonStockSharesOutstanding">Common stock, shares outstanding (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesOutstanding" xlink:to="label_CommonStockSharesOutstanding" xlink:title="Label : CommonStockSharesOutstanding to label_CommonStockSharesOutstanding" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="IncomeStatementAbstract" xlink:title="IncomeStatementAbstract" />
    <link:label xlink:type="resource" xlink:label="label_IncomeStatementAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeStatementAbstract" xml:lang="en-US" id="label_IncomeStatementAbstract">Income Statement [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeStatementAbstract" xlink:to="label_IncomeStatementAbstract" xlink:title="Label : IncomeStatementAbstract to label_IncomeStatementAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:label="RevenueFromContractWithCustomerIncludingAssessedTax" xlink:title="RevenueFromContractWithCustomerIncludingAssessedTax" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RevenueFromContractWithCustomerIncludingAssessedTax" xml:lang="en-US" id="label_RevenueFromContractWithCustomerIncludingAssessedTax">Revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerIncludingAssessedTax" xlink:to="label_RevenueFromContractWithCustomerIncludingAssessedTax" xlink:title="Label : RevenueFromContractWithCustomerIncludingAssessedTax to label_RevenueFromContractWithCustomerIncludingAssessedTax" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerIncludingAssessedTax_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RevenueFromContractWithCustomerIncludingAssessedTax_1" xml:lang="en-US" id="label_RevenueFromContractWithCustomerIncludingAssessedTax_1">Revenue from Contract with Customer, Including Assessed Tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerIncludingAssessedTax" xlink:to="label_RevenueFromContractWithCustomerIncludingAssessedTax_1" xlink:title="Label : RevenueFromContractWithCustomerIncludingAssessedTax to label_RevenueFromContractWithCustomerIncludingAssessedTax_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="CostOfGoodsAndServicesSold" xlink:title="CostOfGoodsAndServicesSold" />
    <link:label xlink:type="resource" xlink:label="label_CostOfGoodsAndServicesSold" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CostOfGoodsAndServicesSold" xml:lang="en-US" id="label_CostOfGoodsAndServicesSold">Cost of goods sold</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfGoodsAndServicesSold" xlink:to="label_CostOfGoodsAndServicesSold" xlink:title="Label : CostOfGoodsAndServicesSold to label_CostOfGoodsAndServicesSold" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GrossProfit" xlink:label="GrossProfit" xlink:title="GrossProfit" />
    <link:label xlink:type="resource" xlink:label="label_GrossProfit" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_GrossProfit" xml:lang="en-US" id="label_GrossProfit">Gross profit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GrossProfit" xlink:to="label_GrossProfit" xlink:title="Label : GrossProfit to label_GrossProfit" />
    <link:label xlink:type="resource" xlink:label="label_GrossProfit_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GrossProfit_1" xml:lang="en-US" id="label_GrossProfit_1">Gross Profit</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GrossProfit" xlink:to="label_GrossProfit_1" xlink:title="Label : GrossProfit to label_GrossProfit_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="OperatingExpensesAbstract" xlink:title="OperatingExpensesAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OperatingExpensesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingExpensesAbstract" xml:lang="en-US" id="label_OperatingExpensesAbstract">Operating expenses:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpensesAbstract" xlink:to="label_OperatingExpensesAbstract" xlink:title="Label : OperatingExpensesAbstract to label_OperatingExpensesAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingAndMarketingExpense" xlink:label="SellingAndMarketingExpense" xlink:title="SellingAndMarketingExpense" />
    <link:label xlink:type="resource" xlink:label="label_SellingAndMarketingExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SellingAndMarketingExpense" xml:lang="en-US" id="label_SellingAndMarketingExpense">Sales and marketing</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingAndMarketingExpense" xlink:to="label_SellingAndMarketingExpense" xlink:title="Label : SellingAndMarketingExpense to label_SellingAndMarketingExpense" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="ResearchAndDevelopmentExpense" xlink:title="ResearchAndDevelopmentExpense" />
    <link:label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ResearchAndDevelopmentExpense" xml:lang="en-US" id="label_ResearchAndDevelopmentExpense">Research and product development</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpense" xlink:to="label_ResearchAndDevelopmentExpense" xlink:title="Label : ResearchAndDevelopmentExpense to label_ResearchAndDevelopmentExpense" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="GeneralAndAdministrativeExpense" xlink:title="GeneralAndAdministrativeExpense" />
    <link:label xlink:type="resource" xlink:label="label_GeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GeneralAndAdministrativeExpense" xml:lang="en-US" id="label_GeneralAndAdministrativeExpense">General and administrative</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GeneralAndAdministrativeExpense" xlink:to="label_GeneralAndAdministrativeExpense" xlink:title="Label : GeneralAndAdministrativeExpense to label_GeneralAndAdministrativeExpense" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="OperatingExpenses" xlink:title="OperatingExpenses" />
    <link:label xlink:type="resource" xlink:label="label_OperatingExpenses" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingExpenses" xml:lang="en-US" id="label_OperatingExpenses">Total operating expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpenses" xlink:to="label_OperatingExpenses" xlink:title="Label : OperatingExpenses to label_OperatingExpenses" />
    <link:label xlink:type="resource" xlink:label="label_OperatingExpenses_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingExpenses_1" xml:lang="en-US" id="label_OperatingExpenses_1">Operating Expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpenses" xlink:to="label_OperatingExpenses_1" xlink:title="Label : OperatingExpenses to label_OperatingExpenses_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="OperatingIncomeLoss" xlink:title="OperatingIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="label_OperatingIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingIncomeLoss" xml:lang="en-US" id="label_OperatingIncomeLoss">Operating loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingIncomeLoss" xlink:to="label_OperatingIncomeLoss" xlink:title="Label : OperatingIncomeLoss to label_OperatingIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="label_OperatingIncomeLoss_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingIncomeLoss_1" xml:lang="en-US" id="label_OperatingIncomeLoss_1">Operating Income (Loss)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingIncomeLoss" xlink:to="label_OperatingIncomeLoss_1" xlink:title="Label : OperatingIncomeLoss to label_OperatingIncomeLoss_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="OtherNonoperatingIncomeExpense" xlink:title="OtherNonoperatingIncomeExpense" />
    <link:label xlink:type="resource" xlink:label="label_OtherNonoperatingIncomeExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherNonoperatingIncomeExpense" xml:lang="en-US" id="label_OtherNonoperatingIncomeExpense">Other Nonoperating Income (Expense)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNonoperatingIncomeExpense" xlink:to="label_OtherNonoperatingIncomeExpense" xlink:title="Label : OtherNonoperatingIncomeExpense to label_OtherNonoperatingIncomeExpense" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="IncomeTaxExpenseBenefit" xlink:title="IncomeTaxExpenseBenefit" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxExpenseBenefit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxExpenseBenefit" xml:lang="en-US" id="label_IncomeTaxExpenseBenefit">Income Tax Expense (Benefit)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxExpenseBenefit" xlink:to="label_IncomeTaxExpenseBenefit" xlink:title="Label : IncomeTaxExpenseBenefit to label_IncomeTaxExpenseBenefit" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetIncomeLoss" xml:lang="en-US" id="label_NetIncomeLoss">Net loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetIncomeLoss_1" xml:lang="en-US" id="label_NetIncomeLoss_1">Net loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss_1" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss_1" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss_2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_NetIncomeLoss_2" xml:lang="en-US" id="label_NetIncomeLoss_2">Net loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss_2" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="WeightedAverageNumberOfSharesOutstandingBasic" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfSharesOutstandingBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageNumberOfSharesOutstandingBasic" xml:lang="en-US" id="label_WeightedAverageNumberOfSharesOutstandingBasic">Basic weighted average shares outstanding (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="label_WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="Label : WeightedAverageNumberOfSharesOutstandingBasic to label_WeightedAverageNumberOfSharesOutstandingBasic" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfDilutedSharesOutstanding_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageNumberOfDilutedSharesOutstanding_1" xml:lang="en-US" id="label_WeightedAverageNumberOfDilutedSharesOutstanding_1">Weighted Average Number of Shares Outstanding, Diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="label_WeightedAverageNumberOfDilutedSharesOutstanding_1" xlink:title="Label : WeightedAverageNumberOfDilutedSharesOutstanding to label_WeightedAverageNumberOfDilutedSharesOutstanding_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="EarningsPerShareBasic" xlink:title="EarningsPerShareBasic" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareBasic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EarningsPerShareBasic" xml:lang="en-US" id="label_EarningsPerShareBasic">Basic loss per share (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareBasic" xlink:to="label_EarningsPerShareBasic" xlink:title="Label : EarningsPerShareBasic to label_EarningsPerShareBasic" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareBasic" xlink:to="label_EarningsPerShareBasic_1" xlink:title="Label : EarningsPerShareBasic to label_EarningsPerShareBasic_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="EarningsPerShareDiluted" xlink:title="EarningsPerShareDiluted" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareDiluted" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EarningsPerShareDiluted" xml:lang="en-US" id="label_EarningsPerShareDiluted">Diluted loss per share (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareDiluted" xlink:to="label_EarningsPerShareDiluted" xlink:title="Label : EarningsPerShareDiluted to label_EarningsPerShareDiluted" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareDiluted_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_EarningsPerShareDiluted_1" xml:lang="en-US" id="label_EarningsPerShareDiluted_1">Diluted loss per common share (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareDiluted" xlink:to="label_EarningsPerShareDiluted_1" xlink:title="Label : EarningsPerShareDiluted to label_EarningsPerShareDiluted_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAbstract" xlink:label="ComprehensiveIncomeNetOfTaxAbstract" xlink:title="ComprehensiveIncomeNetOfTaxAbstract" />
    <link:label xlink:type="resource" xlink:label="label_ComprehensiveIncomeNetOfTaxAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ComprehensiveIncomeNetOfTaxAbstract" xml:lang="en-US" id="label_ComprehensiveIncomeNetOfTaxAbstract">Comprehensive loss:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTaxAbstract" xlink:to="label_ComprehensiveIncomeNetOfTaxAbstract" xlink:title="Label : ComprehensiveIncomeNetOfTaxAbstract to label_ComprehensiveIncomeNetOfTaxAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="ComprehensiveIncomeNetOfTax" xlink:title="ComprehensiveIncomeNetOfTax" />
    <link:label xlink:type="resource" xlink:label="label_ComprehensiveIncomeNetOfTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_ComprehensiveIncomeNetOfTax" xml:lang="en-US" id="label_ComprehensiveIncomeNetOfTax">Comprehensive loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="label_ComprehensiveIncomeNetOfTax" xlink:title="Label : ComprehensiveIncomeNetOfTax to label_ComprehensiveIncomeNetOfTax" />
    <link:label xlink:type="resource" xlink:label="label_ComprehensiveIncomeNetOfTax_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ComprehensiveIncomeNetOfTax_1" xml:lang="en-US" id="label_ComprehensiveIncomeNetOfTax_1">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="label_ComprehensiveIncomeNetOfTax_1" xlink:title="Label : ComprehensiveIncomeNetOfTax to label_ComprehensiveIncomeNetOfTax_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="StatementOfCashFlowsAbstract" xlink:title="StatementOfCashFlowsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StatementOfCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementOfCashFlowsAbstract" xml:lang="en-US" id="label_StatementOfCashFlowsAbstract">Statement of Cash Flows [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfCashFlowsAbstract" xlink:to="label_StatementOfCashFlowsAbstract" xlink:title="Label : StatementOfCashFlowsAbstract to label_StatementOfCashFlowsAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetCashProvidedByUsedInOperatingActivitiesAbstract" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivitiesAbstract">Cash flows from operating activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="Label : NetCashProvidedByUsedInOperatingActivitiesAbstract to label_NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="CashAndCashEquivalentsAtCarryingValue" xlink:title="CashAndCashEquivalentsAtCarryingValue" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAtCarryingValue" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_CashAndCashEquivalentsAtCarryingValue" xml:lang="en-US" id="label_CashAndCashEquivalentsAtCarryingValue">Cash and cash equivalents at the end of the period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAtCarryingValue" xlink:to="label_CashAndCashEquivalentsAtCarryingValue" xlink:title="Label : CashAndCashEquivalentsAtCarryingValue to label_CashAndCashEquivalentsAtCarryingValue" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAtCarryingValue_1" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_CashAndCashEquivalentsAtCarryingValue_1" xml:lang="en-US" id="label_CashAndCashEquivalentsAtCarryingValue_1">Cash and cash equivalents at the beginning of the period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAtCarryingValue" xlink:to="label_CashAndCashEquivalentsAtCarryingValue_1" xlink:title="Label : CashAndCashEquivalentsAtCarryingValue to label_CashAndCashEquivalentsAtCarryingValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="ShareBasedCompensation" xlink:title="ShareBasedCompensation" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensation" xml:lang="en-US" id="label_ShareBasedCompensation">Stock-based compensation expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensation" xlink:to="label_ShareBasedCompensation" xlink:title="Label : ShareBasedCompensation to label_ShareBasedCompensation" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="ProvisionForDoubtfulAccounts" xlink:title="ProvisionForDoubtfulAccounts" />
    <link:label xlink:type="resource" xlink:label="label_ProvisionForDoubtfulAccounts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProvisionForDoubtfulAccounts" xml:lang="en-US" id="label_ProvisionForDoubtfulAccounts">Provision for doubtful accounts, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProvisionForDoubtfulAccounts" xlink:to="label_ProvisionForDoubtfulAccounts" xlink:title="Label : ProvisionForDoubtfulAccounts to label_ProvisionForDoubtfulAccounts" />
    <link:label xlink:type="resource" xlink:label="label_InventoryWriteDown_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryWriteDown_1" xml:lang="en-US" id="label_InventoryWriteDown_1">Inventory Write-down</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryWriteDown" xlink:to="label_InventoryWriteDown_1" xlink:title="Label : InventoryWriteDown to label_InventoryWriteDown_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="IncreaseDecreaseInOperatingCapitalAbstract" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOperatingCapitalAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInOperatingCapitalAbstract" xml:lang="en-US" id="label_IncreaseDecreaseInOperatingCapitalAbstract">Changes in operating assets and liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="label_IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="Label : IncreaseDecreaseInOperatingCapitalAbstract to label_IncreaseDecreaseInOperatingCapitalAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="IncreaseDecreaseInReceivables" xlink:title="IncreaseDecreaseInReceivables" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInReceivables" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_IncreaseDecreaseInReceivables" xml:lang="en-US" id="label_IncreaseDecreaseInReceivables">Receivables</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInReceivables" xlink:to="label_IncreaseDecreaseInReceivables" xlink:title="Label : IncreaseDecreaseInReceivables to label_IncreaseDecreaseInReceivables" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInReceivables_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInReceivables_1" xml:lang="en-US" id="label_IncreaseDecreaseInReceivables_1">Increase (Decrease) in Receivables</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInReceivables" xlink:to="label_IncreaseDecreaseInReceivables_1" xlink:title="Label : IncreaseDecreaseInReceivables to label_IncreaseDecreaseInReceivables_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="IncreaseDecreaseInInventories" xlink:title="IncreaseDecreaseInInventories" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInInventories" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_IncreaseDecreaseInInventories" xml:lang="en-US" id="label_IncreaseDecreaseInInventories">Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInInventories" xlink:to="label_IncreaseDecreaseInInventories" xlink:title="Label : IncreaseDecreaseInInventories to label_IncreaseDecreaseInInventories" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInInventories_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInInventories_1" xml:lang="en-US" id="label_IncreaseDecreaseInInventories_1">Increase (Decrease) in Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInInventories" xlink:to="label_IncreaseDecreaseInInventories_1" xlink:title="Label : IncreaseDecreaseInInventories to label_IncreaseDecreaseInInventories_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:title="IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xml:lang="en-US" id="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets">Prepaid expenses and other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:title="Label : IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets to label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_1" xml:lang="en-US" id="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_1">Increase (Decrease) in Prepaid Expense and Other Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_1" xlink:title="Label : IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets to label_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="IncreaseDecreaseInAccountsPayable" xlink:title="IncreaseDecreaseInAccountsPayable" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccountsPayable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInAccountsPayable" xml:lang="en-US" id="label_IncreaseDecreaseInAccountsPayable">Increase (Decrease) in Accounts Payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccountsPayable" xlink:to="label_IncreaseDecreaseInAccountsPayable" xlink:title="Label : IncreaseDecreaseInAccountsPayable to label_IncreaseDecreaseInAccountsPayable" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccountsPayable_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInAccountsPayable_1" xml:lang="en-US" id="label_IncreaseDecreaseInAccountsPayable_1">Accounts payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccountsPayable" xlink:to="label_IncreaseDecreaseInAccountsPayable_1" xlink:title="Label : IncreaseDecreaseInAccountsPayable to label_IncreaseDecreaseInAccountsPayable_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="IncreaseDecreaseInAccruedLiabilities" xlink:title="IncreaseDecreaseInAccruedLiabilities" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccruedLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInAccruedLiabilities" xml:lang="en-US" id="label_IncreaseDecreaseInAccruedLiabilities">Accrued liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccruedLiabilities" xlink:to="label_IncreaseDecreaseInAccruedLiabilities" xlink:title="Label : IncreaseDecreaseInAccruedLiabilities to label_IncreaseDecreaseInAccruedLiabilities" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInAccruedLiabilities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInAccruedLiabilities_1" xml:lang="en-US" id="label_IncreaseDecreaseInAccruedLiabilities_1">Increase (Decrease) in Accrued Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccruedLiabilities" xlink:to="label_IncreaseDecreaseInAccruedLiabilities_1" xlink:title="Label : IncreaseDecreaseInAccruedLiabilities to label_IncreaseDecreaseInAccruedLiabilities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" xlink:label="IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" xlink:title="IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" xml:lang="en-US" id="label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable">Income taxes payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" xlink:to="label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" xlink:title="Label : IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable to label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:label="IncreaseDecreaseInDeferredRevenue" xlink:title="IncreaseDecreaseInDeferredRevenue" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInDeferredRevenue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInDeferredRevenue" xml:lang="en-US" id="label_IncreaseDecreaseInDeferredRevenue">Deferred product revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInDeferredRevenue" xlink:to="label_IncreaseDecreaseInDeferredRevenue" xlink:title="Label : IncreaseDecreaseInDeferredRevenue to label_IncreaseDecreaseInDeferredRevenue" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInDeferredRevenue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInDeferredRevenue_1" xml:lang="en-US" id="label_IncreaseDecreaseInDeferredRevenue_1">Increase (Decrease) in Deferred Revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInDeferredRevenue" xlink:to="label_IncreaseDecreaseInDeferredRevenue_1" xlink:title="Label : IncreaseDecreaseInDeferredRevenue to label_IncreaseDecreaseInDeferredRevenue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:label="IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:title="IncreaseDecreaseInOtherNoncurrentLiabilities" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInOtherNoncurrentLiabilities" xml:lang="en-US" id="label_IncreaseDecreaseInOtherNoncurrentLiabilities">Other long-term liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:to="label_IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:title="Label : IncreaseDecreaseInOtherNoncurrentLiabilities to label_IncreaseDecreaseInOtherNoncurrentLiabilities" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOtherNoncurrentLiabilities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInOtherNoncurrentLiabilities_1" xml:lang="en-US" id="label_IncreaseDecreaseInOtherNoncurrentLiabilities_1">Increase (Decrease) in Other Noncurrent Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:to="label_IncreaseDecreaseInOtherNoncurrentLiabilities_1" xlink:title="Label : IncreaseDecreaseInOtherNoncurrentLiabilities to label_IncreaseDecreaseInOtherNoncurrentLiabilities_1" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInOperatingActivities_1" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivities_1">Net Cash Provided by (Used in) Operating Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:to="label_NetCashProvidedByUsedInOperatingActivities_1" xlink:title="Label : NetCashProvidedByUsedInOperatingActivities to label_NetCashProvidedByUsedInOperatingActivities_1" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivities_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetCashProvidedByUsedInOperatingActivities_2" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivities_2">Net cash used in operating activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:to="label_NetCashProvidedByUsedInOperatingActivities_2" xlink:title="Label : NetCashProvidedByUsedInOperatingActivities to label_NetCashProvidedByUsedInOperatingActivities_2" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivities_3" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInOperatingActivities_3" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivities_3">Net cash provided by (used in) operating activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:to="label_NetCashProvidedByUsedInOperatingActivities_3" xlink:title="Label : NetCashProvidedByUsedInOperatingActivities to label_NetCashProvidedByUsedInOperatingActivities_3" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInInvestingActivitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetCashProvidedByUsedInInvestingActivitiesAbstract" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivitiesAbstract">Cash flows from investing activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="Label : NetCashProvidedByUsedInInvestingActivitiesAbstract to label_NetCashProvidedByUsedInInvestingActivitiesAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="PaymentsToAcquirePropertyPlantAndEquipment" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquirePropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_PaymentsToAcquirePropertyPlantAndEquipment" xml:lang="en-US" id="label_PaymentsToAcquirePropertyPlantAndEquipment">Purchase of property and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="label_PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="Label : PaymentsToAcquirePropertyPlantAndEquipment to label_PaymentsToAcquirePropertyPlantAndEquipment" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquirePropertyPlantAndEquipment_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquirePropertyPlantAndEquipment_1" xml:lang="en-US" id="label_PaymentsToAcquirePropertyPlantAndEquipment_1">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="label_PaymentsToAcquirePropertyPlantAndEquipment_1" xlink:title="Label : PaymentsToAcquirePropertyPlantAndEquipment to label_PaymentsToAcquirePropertyPlantAndEquipment_1" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_CapitalizedPatentDefenseCosts" xlink:label="CapitalizedPatentDefenseCosts" xlink:title="CapitalizedPatentDefenseCosts" />
    <link:label xlink:type="resource" xlink:label="label_CapitalizedPatentDefenseCosts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CapitalizedPatentDefenseCosts" xml:lang="en-US" id="label_CapitalizedPatentDefenseCosts">Represents payments for capitalized patent defense costs.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalizedPatentDefenseCosts" xlink:to="label_CapitalizedPatentDefenseCosts" xlink:title="Label : CapitalizedPatentDefenseCosts to label_CapitalizedPatentDefenseCosts" />
    <link:label xlink:type="resource" xlink:label="label_CapitalizedPatentDefenseCosts_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_CapitalizedPatentDefenseCosts_1" xml:lang="en-US" id="label_CapitalizedPatentDefenseCosts_1">Capitalized patent defense costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalizedPatentDefenseCosts" xlink:to="label_CapitalizedPatentDefenseCosts_1" xlink:title="Label : CapitalizedPatentDefenseCosts to label_CapitalizedPatentDefenseCosts_1" />
    <link:label xlink:type="resource" xlink:label="label_CapitalizedPatentDefenseCosts_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CapitalizedPatentDefenseCosts_2" xml:lang="en-US" id="label_CapitalizedPatentDefenseCosts_2">Capitalized Patent Defense Costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalizedPatentDefenseCosts" xlink:to="label_CapitalizedPatentDefenseCosts_2" xlink:title="Label : CapitalizedPatentDefenseCosts to label_CapitalizedPatentDefenseCosts_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:label="ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:title="ProceedsFromSaleAndMaturityOfMarketableSecurities" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromSaleAndMaturityOfMarketableSecurities" xml:lang="en-US" id="label_ProceedsFromSaleAndMaturityOfMarketableSecurities">Proceeds from maturities and sales of marketable securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:to="label_ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:title="Label : ProceedsFromSaleAndMaturityOfMarketableSecurities to label_ProceedsFromSaleAndMaturityOfMarketableSecurities" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="PaymentsToAcquireMarketableSecurities" xlink:title="PaymentsToAcquireMarketableSecurities" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireMarketableSecurities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_PaymentsToAcquireMarketableSecurities" xml:lang="en-US" id="label_PaymentsToAcquireMarketableSecurities">Purchases of marketable securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireMarketableSecurities" xlink:to="label_PaymentsToAcquireMarketableSecurities" xlink:title="Label : PaymentsToAcquireMarketableSecurities to label_PaymentsToAcquireMarketableSecurities" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireMarketableSecurities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireMarketableSecurities_1" xml:lang="en-US" id="label_PaymentsToAcquireMarketableSecurities_1">Payments to Acquire Marketable Securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireMarketableSecurities" xlink:to="label_PaymentsToAcquireMarketableSecurities_1" xlink:title="Label : PaymentsToAcquireMarketableSecurities to label_PaymentsToAcquireMarketableSecurities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="NetCashProvidedByUsedInInvestingActivities" xlink:title="NetCashProvidedByUsedInInvestingActivities" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivities">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="label_NetCashProvidedByUsedInInvestingActivities" xlink:title="Label : NetCashProvidedByUsedInInvestingActivities to label_NetCashProvidedByUsedInInvestingActivities" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivities_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInInvestingActivities_1" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivities_1">Net cash used in investing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="label_NetCashProvidedByUsedInInvestingActivities_1" xlink:title="Label : NetCashProvidedByUsedInInvestingActivities to label_NetCashProvidedByUsedInInvestingActivities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NetCashProvidedByUsedInFinancingActivitiesAbstract" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivitiesAbstract">Cash flows from financing activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:title="Label : NetCashProvidedByUsedInFinancingActivitiesAbstract to label_NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="NetCashProvidedByUsedInFinancingActivities" xlink:title="NetCashProvidedByUsedInFinancingActivities" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInFinancingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivities">Net cash provided by (used in) financing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:to="label_NetCashProvidedByUsedInFinancingActivities" xlink:title="Label : NetCashProvidedByUsedInFinancingActivities to label_NetCashProvidedByUsedInFinancingActivities" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInFinancingActivities_1" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivities_1">Net Cash Provided by (Used in) Financing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:to="label_NetCashProvidedByUsedInFinancingActivities_1" xlink:title="Label : NetCashProvidedByUsedInFinancingActivities to label_NetCashProvidedByUsedInFinancingActivities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="EffectOfExchangeRateOnCashAndCashEquivalents" xlink:title="EffectOfExchangeRateOnCashAndCashEquivalents" />
    <link:label xlink:type="resource" xlink:label="label_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EffectOfExchangeRateOnCashAndCashEquivalents" xml:lang="en-US" id="label_EffectOfExchangeRateOnCashAndCashEquivalents">Effect of exchange rate changes on cash and cash equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EffectOfExchangeRateOnCashAndCashEquivalents" xlink:to="label_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:title="Label : EffectOfExchangeRateOnCashAndCashEquivalents to label_EffectOfExchangeRateOnCashAndCashEquivalents" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="CashAndCashEquivalentsPeriodIncreaseDecrease" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_CashAndCashEquivalentsPeriodIncreaseDecrease" xml:lang="en-US" id="label_CashAndCashEquivalentsPeriodIncreaseDecrease">Net decrease in cash and cash equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="label_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="Label : CashAndCashEquivalentsPeriodIncreaseDecrease to label_CashAndCashEquivalentsPeriodIncreaseDecrease" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsPeriodIncreaseDecrease_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsPeriodIncreaseDecrease_1" xml:lang="en-US" id="label_CashAndCashEquivalentsPeriodIncreaseDecrease_1">Cash and Cash Equivalents, Period Increase (Decrease)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="label_CashAndCashEquivalentsPeriodIncreaseDecrease_1" xlink:title="Label : CashAndCashEquivalentsPeriodIncreaseDecrease to label_CashAndCashEquivalentsPeriodIncreaseDecrease_1" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxesPaidNet_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeTaxesPaidNet_1" xml:lang="en-US" id="label_IncomeTaxesPaidNet_1">Cash paid for income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesPaidNet" xlink:to="label_IncomeTaxesPaidNet_1" xlink:title="Label : IncomeTaxesPaidNet to label_IncomeTaxesPaidNet_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_LitigationCaseAxis" xlink:label="LitigationCaseAxis" xlink:title="LitigationCaseAxis" />
    <link:label xlink:type="resource" xlink:label="label_LitigationCaseAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LitigationCaseAxis" xml:lang="en-US" id="label_LitigationCaseAxis">Litigation Case [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationCaseAxis" xlink:to="label_LitigationCaseAxis" xlink:title="Label : LitigationCaseAxis to label_LitigationCaseAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:label="LitigationCaseTypeDomain" xlink:title="LitigationCaseTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_LitigationCaseTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LitigationCaseTypeDomain" xml:lang="en-US" id="label_LitigationCaseTypeDomain">Litigation Case [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationCaseTypeDomain" xlink:to="label_LitigationCaseTypeDomain" xlink:title="Label : LitigationCaseTypeDomain to label_LitigationCaseTypeDomain" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_LitigationForIntellectualPropertyInfringementMember" xlink:label="LitigationForIntellectualPropertyInfringementMember" xlink:title="LitigationForIntellectualPropertyInfringementMember" />
    <link:label xlink:type="resource" xlink:label="label_LitigationForIntellectualPropertyInfringementMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LitigationForIntellectualPropertyInfringementMember" xml:lang="en-US" id="label_LitigationForIntellectualPropertyInfringementMember">Information pertaining to the litigation for intellectual property infringement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationForIntellectualPropertyInfringementMember" xlink:to="label_LitigationForIntellectualPropertyInfringementMember" xlink:title="Label : LitigationForIntellectualPropertyInfringementMember to label_LitigationForIntellectualPropertyInfringementMember" />
    <link:label xlink:type="resource" xlink:label="label_LitigationForIntellectualPropertyInfringementMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LitigationForIntellectualPropertyInfringementMember_1" xml:lang="en-US" id="label_LitigationForIntellectualPropertyInfringementMember_1">Litigation for Intellectual Property Infringement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationForIntellectualPropertyInfringementMember" xlink:to="label_LitigationForIntellectualPropertyInfringementMember_1" xlink:title="Label : LitigationForIntellectualPropertyInfringementMember to label_LitigationForIntellectualPropertyInfringementMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:label="RevenueFromContractWithCustomerTextBlock" xlink:title="RevenueFromContractWithCustomerTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RevenueFromContractWithCustomerTextBlock" xml:lang="en-US" id="label_RevenueFromContractWithCustomerTextBlock">Revenue from Contract with Customer [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerTextBlock" xlink:to="label_RevenueFromContractWithCustomerTextBlock" xlink:title="Label : RevenueFromContractWithCustomerTextBlock to label_RevenueFromContractWithCustomerTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="EarningsPerShareTextBlock" xlink:title="EarningsPerShareTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EarningsPerShareTextBlock" xml:lang="en-US" id="label_EarningsPerShareTextBlock">Earnings Per Share [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareTextBlock" xlink:to="label_EarningsPerShareTextBlock" xlink:title="Label : EarningsPerShareTextBlock to label_EarningsPerShareTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="InventoryDisclosureTextBlock" xlink:title="InventoryDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_InventoryDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryDisclosureTextBlock" xml:lang="en-US" id="label_InventoryDisclosureTextBlock">Inventory Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryDisclosureTextBlock" xlink:to="label_InventoryDisclosureTextBlock" xlink:title="Label : InventoryDisclosureTextBlock to label_InventoryDisclosureTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="StockholdersEquityNoteDisclosureTextBlock" xlink:title="StockholdersEquityNoteDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityNoteDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquityNoteDisclosureTextBlock" xml:lang="en-US" id="label_StockholdersEquityNoteDisclosureTextBlock">Stockholders' Equity Note Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityNoteDisclosureTextBlock" xlink:to="label_StockholdersEquityNoteDisclosureTextBlock" xlink:title="Label : StockholdersEquityNoteDisclosureTextBlock to label_StockholdersEquityNoteDisclosureTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="PlanNameAxis" xlink:title="PlanNameAxis" />
    <link:label xlink:type="resource" xlink:label="label_PlanNameAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PlanNameAxis" xml:lang="en-US" id="label_PlanNameAxis">Plan Name [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PlanNameAxis" xlink:to="label_PlanNameAxis" xlink:title="Label : PlanNameAxis to label_PlanNameAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="PlanNameDomain" xlink:title="PlanNameDomain" />
    <link:label xlink:type="resource" xlink:label="label_PlanNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PlanNameDomain" xml:lang="en-US" id="label_PlanNameDomain">Plan Name [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PlanNameDomain" xlink:to="label_PlanNameDomain" xlink:title="Label : PlanNameDomain to label_PlanNameDomain" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_EquityIncentivePlan2007Member" xlink:label="EquityIncentivePlan2007Member" xlink:title="EquityIncentivePlan2007Member" />
    <link:label xlink:type="resource" xlink:label="label_EquityIncentivePlan2007Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EquityIncentivePlan2007Member" xml:lang="en-US" id="label_EquityIncentivePlan2007Member">The equity incentive plan approved by the company in 2007.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityIncentivePlan2007Member" xlink:to="label_EquityIncentivePlan2007Member" xlink:title="Label : EquityIncentivePlan2007Member to label_EquityIncentivePlan2007Member" />
    <link:label xlink:type="resource" xlink:label="label_EquityIncentivePlan2007Member_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityIncentivePlan2007Member_1" xml:lang="en-US" id="label_EquityIncentivePlan2007Member_1">Equity Incentive Plan 2007 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityIncentivePlan2007Member" xlink:to="label_EquityIncentivePlan2007Member_1" xlink:title="Label : EquityIncentivePlan2007Member to label_EquityIncentivePlan2007Member_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:label="FairValueDisclosuresTextBlock" xlink:title="FairValueDisclosuresTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_FairValueDisclosuresTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueDisclosuresTextBlock" xml:lang="en-US" id="label_FairValueDisclosuresTextBlock">Fair Value Disclosures [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDisclosuresTextBlock" xlink:to="label_FairValueDisclosuresTextBlock" xlink:title="Label : FairValueDisclosuresTextBlock to label_FairValueDisclosuresTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxDisclosureTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeTaxDisclosureTextBlock_1" xml:lang="en-US" id="label_IncomeTaxDisclosureTextBlock_1">Income Tax Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureTextBlock" xlink:to="label_IncomeTaxDisclosureTextBlock_1" xlink:title="Label : IncomeTaxDisclosureTextBlock to label_IncomeTaxDisclosureTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="BasisOfAccountingPolicyPolicyTextBlock" xlink:title="BasisOfAccountingPolicyPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_BasisOfAccountingPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_BasisOfAccountingPolicyPolicyTextBlock" xml:lang="en-US" id="label_BasisOfAccountingPolicyPolicyTextBlock">Basis of Presentation:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BasisOfAccountingPolicyPolicyTextBlock" xlink:to="label_BasisOfAccountingPolicyPolicyTextBlock" xlink:title="Label : BasisOfAccountingPolicyPolicyTextBlock to label_BasisOfAccountingPolicyPolicyTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:title="NewAccountingPronouncementsPolicyPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NewAccountingPronouncementsPolicyPolicyTextBlock" xml:lang="en-US" id="label_NewAccountingPronouncementsPolicyPolicyTextBlock">Significant Accounting Policies:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="label_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:title="Label : NewAccountingPronouncementsPolicyPolicyTextBlock to label_NewAccountingPronouncementsPolicyPolicyTextBlock" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_LiquidityPolicyPolicyTextBlock" xlink:label="LiquidityPolicyPolicyTextBlock" xlink:title="LiquidityPolicyPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_LiquidityPolicyPolicyTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_LiquidityPolicyPolicyTextBlock" xml:lang="en-US" id="label_LiquidityPolicyPolicyTextBlock">Disclosure of accounting policy for liquidity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiquidityPolicyPolicyTextBlock" xlink:to="label_LiquidityPolicyPolicyTextBlock" xlink:title="Label : LiquidityPolicyPolicyTextBlock to label_LiquidityPolicyPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_LiquidityPolicyPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiquidityPolicyPolicyTextBlock_1" xml:lang="en-US" id="label_LiquidityPolicyPolicyTextBlock_1">Liquidity, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiquidityPolicyPolicyTextBlock" xlink:to="label_LiquidityPolicyPolicyTextBlock_1" xlink:title="Label : LiquidityPolicyPolicyTextBlock to label_LiquidityPolicyPolicyTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:label="DisaggregationOfRevenueTableTextBlock" xlink:title="DisaggregationOfRevenueTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_DisaggregationOfRevenueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DisaggregationOfRevenueTableTextBlock" xml:lang="en-US" id="label_DisaggregationOfRevenueTableTextBlock">Schedule disaggregates the Company&#x2019;s revenue into primary product groups and major regions</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisaggregationOfRevenueTableTextBlock" xlink:to="label_DisaggregationOfRevenueTableTextBlock" xlink:title="Label : DisaggregationOfRevenueTableTextBlock to label_DisaggregationOfRevenueTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:title="ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xml:lang="en-US" id="label_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="label_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:title="Label : ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock to label_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:label="ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:title="ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xml:lang="en-US" id="label_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock">Schedule of Available-for-sale Securities Reconciliation [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:to="label_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" xlink:title="Label : ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock to label_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" xml:lang="en-US" id="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock">Available-for-sale Securities, Debt Maturities [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" xlink:to="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" xlink:title="Label : AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock to label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_1" xml:lang="en-US" id="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_1">Tabular disclosure of maturities of available-for-sale securities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" xlink:to="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_1" xlink:title="Label : AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock to label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_2" xml:lang="en-US" id="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_2">Schedule of maturities of marketable securities classified as available-for-sale securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock" xlink:to="label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_2" xlink:title="Label : AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock to label_AvailableForSaleSecuritiesDebtMaturitiesTableTextBlock_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock">Finite-lived Intangible Assets Amortization Expense [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock to label_FiniteLivedIntangibleAssetsAmortizationExpenseTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" xlink:label="ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" xlink:title="ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" xml:lang="en-US" id="label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock">Tabular disclosure of inventories.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" xlink:to="label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" xlink:title="Label : ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock to label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock_1" xml:lang="en-US" id="label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock_1">Schedule of Inventory Current and Noncurrent [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock" xlink:to="label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock_1" xlink:title="Label : ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock to label_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:label="LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:title="LesseeOperatingLeaseLiabilityMaturityTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityMaturityTableTextBlock">Lessee, Operating Lease, Liability, Maturity [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:to="label_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:title="Label : LesseeOperatingLeaseLiabilityMaturityTableTextBlock to label_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfStockholdersEquityTableTextBlock" xlink:label="ScheduleOfStockholdersEquityTableTextBlock" xlink:title="ScheduleOfStockholdersEquityTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfStockholdersEquityTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfStockholdersEquityTableTextBlock" xml:lang="en-US" id="label_ScheduleOfStockholdersEquityTableTextBlock">Schedule of Stockholders Equity [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfStockholdersEquityTableTextBlock" xlink:to="label_ScheduleOfStockholdersEquityTableTextBlock" xlink:title="Label : ScheduleOfStockholdersEquityTableTextBlock to label_ScheduleOfStockholdersEquityTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="OperatingLeaseLiability" xlink:title="OperatingLeaseLiability" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiability" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OperatingLeaseLiability" xml:lang="en-US" id="label_OperatingLeaseLiability">Operating lease liability</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiability" xlink:to="label_OperatingLeaseLiability" xlink:title="Label : OperatingLeaseLiability to label_OperatingLeaseLiability" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiability_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingLeaseLiability_1" xml:lang="en-US" id="label_OperatingLeaseLiability_1">Total operating lease liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiability" xlink:to="label_OperatingLeaseLiability_1" xlink:title="Label : OperatingLeaseLiability to label_OperatingLeaseLiability_1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiability_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseLiability_2" xml:lang="en-US" id="label_OperatingLeaseLiability_2">Total</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiability" xlink:to="label_OperatingLeaseLiability_2" xlink:title="Label : OperatingLeaseLiability to label_OperatingLeaseLiability_2" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_WorkingCapitalDeficit" xlink:label="WorkingCapitalDeficit" xlink:title="WorkingCapitalDeficit" />
    <link:label xlink:type="resource" xlink:label="label_WorkingCapitalDeficit" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_WorkingCapitalDeficit" xml:lang="en-US" id="label_WorkingCapitalDeficit">Amount of a company's current assets minus the amount of its current liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalDeficit" xlink:to="label_WorkingCapitalDeficit" xlink:title="Label : WorkingCapitalDeficit to label_WorkingCapitalDeficit" />
    <link:label xlink:type="resource" xlink:label="label_WorkingCapitalDeficit_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WorkingCapitalDeficit_1" xml:lang="en-US" id="label_WorkingCapitalDeficit_1">Working capital</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalDeficit" xlink:to="label_WorkingCapitalDeficit_1" xlink:title="Label : WorkingCapitalDeficit to label_WorkingCapitalDeficit_1" />
    <link:label xlink:type="resource" xlink:label="label_WorkingCapitalDeficit_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WorkingCapitalDeficit_2" xml:lang="en-US" id="label_WorkingCapitalDeficit_2">Working Capital (Deficit)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalDeficit" xlink:to="label_WorkingCapitalDeficit_2" xlink:title="Label : WorkingCapitalDeficit to label_WorkingCapitalDeficit_2" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" xlink:label="IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" xlink:title="IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" xml:lang="en-US" id="label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities">Increase of cash used in operating activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" xlink:to="label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" xlink:title="Label : IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities to label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities_1" xml:lang="en-US" id="label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities_1">Increase (Decrease) in Net Cash Provided By (Used in) Operating Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities" xlink:to="label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities_1" xlink:title="Label : IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities to label_IncreaseDecreaseInNetCashProvidedByUsedInOperatingActivities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LitigationSettlementExpense" xlink:label="LitigationSettlementExpense" xlink:title="LitigationSettlementExpense" />
    <link:label xlink:type="resource" xlink:label="label_LitigationSettlementExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LitigationSettlementExpense" xml:lang="en-US" id="label_LitigationSettlementExpense">Litigation settlement expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationSettlementExpense" xlink:to="label_LitigationSettlementExpense" xlink:title="Label : LitigationSettlementExpense to label_LitigationSettlementExpense" />
    <link:label xlink:type="resource" xlink:label="label_LitigationSettlementExpense_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LitigationSettlementExpense_1" xml:lang="en-US" id="label_LitigationSettlementExpense_1">Litigation Settlement, Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationSettlementExpense" xlink:to="label_LitigationSettlementExpense_1" xlink:title="Label : LitigationSettlementExpense to label_LitigationSettlementExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="ProductOrServiceAxis" xlink:title="ProductOrServiceAxis" />
    <link:label xlink:type="resource" xlink:label="label_ProductOrServiceAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProductOrServiceAxis" xml:lang="en-US" id="label_ProductOrServiceAxis">Product and Service [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductOrServiceAxis" xlink:to="label_ProductOrServiceAxis" xlink:title="Label : ProductOrServiceAxis to label_ProductOrServiceAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="ProductsAndServicesDomain" xlink:title="ProductsAndServicesDomain" />
    <link:label xlink:type="resource" xlink:label="label_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProductsAndServicesDomain" xml:lang="en-US" id="label_ProductsAndServicesDomain">Product and Service [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductsAndServicesDomain" xlink:to="label_ProductsAndServicesDomain" xlink:title="Label : ProductsAndServicesDomain to label_ProductsAndServicesDomain" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_AudioConferencingMember" xlink:label="AudioConferencingMember" xlink:title="AudioConferencingMember" />
    <link:label xlink:type="resource" xlink:label="label_AudioConferencingMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AudioConferencingMember" xml:lang="en-US" id="label_AudioConferencingMember">Represents information pertaining to Audio Conferencing.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AudioConferencingMember" xlink:to="label_AudioConferencingMember" xlink:title="Label : AudioConferencingMember to label_AudioConferencingMember" />
    <link:label xlink:type="resource" xlink:label="label_AudioConferencingMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AudioConferencingMember_1" xml:lang="en-US" id="label_AudioConferencingMember_1">Audio Conferencing [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AudioConferencingMember" xlink:to="label_AudioConferencingMember_1" xlink:title="Label : AudioConferencingMember to label_AudioConferencingMember_1" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_MicrophonesMember" xlink:label="MicrophonesMember" xlink:title="MicrophonesMember" />
    <link:label xlink:type="resource" xlink:label="label_MicrophonesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MicrophonesMember" xml:lang="en-US" id="label_MicrophonesMember">Represents information pertaining to Microphones.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MicrophonesMember" xlink:to="label_MicrophonesMember" xlink:title="Label : MicrophonesMember to label_MicrophonesMember" />
    <link:label xlink:type="resource" xlink:label="label_MicrophonesMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MicrophonesMember_1" xml:lang="en-US" id="label_MicrophonesMember_1">Microphones [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MicrophonesMember" xlink:to="label_MicrophonesMember_1" xlink:title="Label : MicrophonesMember to label_MicrophonesMember_1" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_VideoProductsMember" xlink:label="VideoProductsMember" xlink:title="VideoProductsMember" />
    <link:label xlink:type="resource" xlink:label="label_VideoProductsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_VideoProductsMember" xml:lang="en-US" id="label_VideoProductsMember">Information related to video products.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VideoProductsMember" xlink:to="label_VideoProductsMember" xlink:title="Label : VideoProductsMember to label_VideoProductsMember" />
    <link:label xlink:type="resource" xlink:label="label_VideoProductsMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_VideoProductsMember_1" xml:lang="en-US" id="label_VideoProductsMember_1">Video Products [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VideoProductsMember" xlink:to="label_VideoProductsMember_1" xlink:title="Label : VideoProductsMember to label_VideoProductsMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="StatementGeographicalAxis" xlink:title="StatementGeographicalAxis" />
    <link:label xlink:type="resource" xlink:label="label_StatementGeographicalAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementGeographicalAxis" xml:lang="en-US" id="label_StatementGeographicalAxis">Geographical [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementGeographicalAxis" xlink:to="label_StatementGeographicalAxis" xlink:title="Label : StatementGeographicalAxis to label_StatementGeographicalAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="SegmentGeographicalDomain" xlink:title="SegmentGeographicalDomain" />
    <link:label xlink:type="resource" xlink:label="label_SegmentGeographicalDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SegmentGeographicalDomain" xml:lang="en-US" id="label_SegmentGeographicalDomain">Geographical [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentGeographicalDomain" xlink:to="label_SegmentGeographicalDomain" xlink:title="Label : SegmentGeographicalDomain to label_SegmentGeographicalDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_AmericasMember" xlink:label="AmericasMember" xlink:title="AmericasMember" />
    <link:label xlink:type="resource" xlink:label="label_AmericasMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmericasMember" xml:lang="en-US" id="label_AmericasMember">Americas [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmericasMember" xlink:to="label_AmericasMember" xlink:title="Label : AmericasMember to label_AmericasMember" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_AsiaMiddleEastAndAustraliaMember" xlink:label="AsiaMiddleEastAndAustraliaMember" xlink:title="AsiaMiddleEastAndAustraliaMember" />
    <link:label xlink:type="resource" xlink:label="label_AsiaMiddleEastAndAustraliaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AsiaMiddleEastAndAustraliaMember" xml:lang="en-US" id="label_AsiaMiddleEastAndAustraliaMember">Information related to the regions of Asia, the Middle East and Australia.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AsiaMiddleEastAndAustraliaMember" xlink:to="label_AsiaMiddleEastAndAustraliaMember" xlink:title="Label : AsiaMiddleEastAndAustraliaMember to label_AsiaMiddleEastAndAustraliaMember" />
    <link:label xlink:type="resource" xlink:label="label_AsiaMiddleEastAndAustraliaMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AsiaMiddleEastAndAustraliaMember_1" xml:lang="en-US" id="label_AsiaMiddleEastAndAustraliaMember_1">Asia, Middle East and Australia [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AsiaMiddleEastAndAustraliaMember" xlink:to="label_AsiaMiddleEastAndAustraliaMember_1" xlink:title="Label : AsiaMiddleEastAndAustraliaMember to label_AsiaMiddleEastAndAustraliaMember_1" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_EuropeAndAfricaMember" xlink:label="EuropeAndAfricaMember" xlink:title="EuropeAndAfricaMember" />
    <link:label xlink:type="resource" xlink:label="label_EuropeAndAfricaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EuropeAndAfricaMember" xml:lang="en-US" id="label_EuropeAndAfricaMember">Information related to the regions of Europe and Africa.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EuropeAndAfricaMember" xlink:to="label_EuropeAndAfricaMember" xlink:title="Label : EuropeAndAfricaMember to label_EuropeAndAfricaMember" />
    <link:label xlink:type="resource" xlink:label="label_EuropeAndAfricaMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EuropeAndAfricaMember_1" xml:lang="en-US" id="label_EuropeAndAfricaMember_1">Europe and Africa [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EuropeAndAfricaMember" xlink:to="label_EuropeAndAfricaMember_1" xlink:title="Label : EuropeAndAfricaMember to label_EuropeAndAfricaMember_1" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleNotesPayableCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConvertibleNotesPayableCurrent_1" xml:lang="en-US" id="label_ConvertibleNotesPayableCurrent_1">Current portion of liability component included under short-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleNotesPayableCurrent" xlink:to="label_ConvertibleNotesPayableCurrent_1" xlink:title="Label : ConvertibleNotesPayableCurrent to label_ConvertibleNotesPayableCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertibleNotesPayable" xlink:label="ConvertibleNotesPayable" xlink:title="ConvertibleNotesPayable" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleNotesPayable" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_ConvertibleNotesPayable" xml:lang="en-US" id="label_ConvertibleNotesPayable">Liability component total</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleNotesPayable" xlink:to="label_ConvertibleNotesPayable" xlink:title="Label : ConvertibleNotesPayable to label_ConvertibleNotesPayable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="FinancialInstrumentAxis" xlink:title="FinancialInstrumentAxis" />
    <link:label xlink:type="resource" xlink:label="label_FinancialInstrumentAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FinancialInstrumentAxis" xml:lang="en-US" id="label_FinancialInstrumentAxis">Financial Instrument [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FinancialInstrumentAxis" xlink:to="label_FinancialInstrumentAxis" xlink:title="Label : FinancialInstrumentAxis to label_FinancialInstrumentAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:title="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" />
    <link:label xlink:type="resource" xlink:label="label_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xml:lang="en-US" id="label_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain">Financial Instruments [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="label_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:title="Label : TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain to label_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="CorporateDebtSecuritiesMember" xlink:title="CorporateDebtSecuritiesMember" />
    <link:label xlink:type="resource" xlink:label="label_CorporateDebtSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CorporateDebtSecuritiesMember" xml:lang="en-US" id="label_CorporateDebtSecuritiesMember">Corporate bonds and notes [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CorporateDebtSecuritiesMember" xlink:to="label_CorporateDebtSecuritiesMember" xlink:title="Label : CorporateDebtSecuritiesMember to label_CorporateDebtSecuritiesMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:label="USStatesAndPoliticalSubdivisionsMember" xlink:title="USStatesAndPoliticalSubdivisionsMember" />
    <link:label xlink:type="resource" xlink:label="label_USStatesAndPoliticalSubdivisionsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_USStatesAndPoliticalSubdivisionsMember" xml:lang="en-US" id="label_USStatesAndPoliticalSubdivisionsMember">Municipal bonds [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="USStatesAndPoliticalSubdivisionsMember" xlink:to="label_USStatesAndPoliticalSubdivisionsMember" xlink:title="Label : USStatesAndPoliticalSubdivisionsMember to label_USStatesAndPoliticalSubdivisionsMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="AvailableForSaleSecuritiesAmortizedCost" xlink:title="AvailableForSaleSecuritiesAmortizedCost" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesAmortizedCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesAmortizedCost" xml:lang="en-US" id="label_AvailableForSaleSecuritiesAmortizedCost">Amortized cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesAmortizedCost" xlink:to="label_AvailableForSaleSecuritiesAmortizedCost" xlink:title="Label : AvailableForSaleSecuritiesAmortizedCost to label_AvailableForSaleSecuritiesAmortizedCost" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:label="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:title="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xml:lang="en-US" id="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax">Gross unrealized holding gains</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:to="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" xlink:title="Label : AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax to label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:label="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:title="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xml:lang="en-US" id="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax">Gross unrealized holding losses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:to="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:title="Label : AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax to label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="AvailableForSaleSecurities" xlink:title="AvailableForSaleSecurities" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecurities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecurities" xml:lang="en-US" id="label_AvailableForSaleSecurities">Available-for-sale Securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecurities" xlink:to="label_AvailableForSaleSecurities" xlink:title="Label : AvailableForSaleSecurities to label_AvailableForSaleSecurities" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_1" xml:lang="en-US" id="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_1">Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax" xlink:to="label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_1" xlink:title="Label : AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax to label_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_1" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecurities_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecurities_1" xml:lang="en-US" id="label_AvailableForSaleSecurities_1">Total</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecurities" xlink:to="label_AvailableForSaleSecurities_1" xlink:title="Label : AvailableForSaleSecurities to label_AvailableForSaleSecurities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xml:lang="en-US" id="label_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost">Due within one year, amortized cost</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:title="AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:label="AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:title="AvailableForSaleDebtSecuritiesAmortizedCostBasis" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:to="label_AvailableForSaleDebtSecuritiesAmortizedCostBasis_1" xlink:title="Label : AvailableForSaleDebtSecuritiesAmortizedCostBasis to label_AvailableForSaleDebtSecuritiesAmortizedCostBasis_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="AvailableForSaleSecuritiesDebtSecurities" xlink:title="AvailableForSaleSecuritiesDebtSecurities" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesDebtSecurities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_AvailableForSaleSecuritiesDebtSecurities" xml:lang="en-US" id="label_AvailableForSaleSecuritiesDebtSecurities">Total available-for-sale securities, estimated fair value</link:label>
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    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesDebtSecurities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesDebtSecurities_1" xml:lang="en-US" id="label_AvailableForSaleSecuritiesDebtSecurities_1">Debt Securities, Available-for-sale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesDebtSecurities" xlink:to="label_AvailableForSaleSecuritiesDebtSecurities_1" xlink:title="Label : AvailableForSaleSecuritiesDebtSecurities to label_AvailableForSaleSecuritiesDebtSecurities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue">Estimated fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:title="Label : AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue to label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_1" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_1">Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_1" xlink:title="Label : AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue to label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsByMajorClassAxis" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsByMajorClassAxis">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="label_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:title="Label : FiniteLivedIntangibleAssetsByMajorClassAxis to label_FiniteLivedIntangibleAssetsByMajorClassAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:title="FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsMajorClassNameDomain" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsMajorClassNameDomain">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="label_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:title="Label : FiniteLivedIntangibleAssetsMajorClassNameDomain to label_FiniteLivedIntangibleAssetsMajorClassNameDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TradeNamesMember" xlink:label="TradeNamesMember" xlink:title="TradeNamesMember" />
    <link:label xlink:type="resource" xlink:label="label_TradeNamesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TradeNamesMember" xml:lang="en-US" id="label_TradeNamesMember">Tradename [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TradeNamesMember" xlink:to="label_TradeNamesMember" xlink:title="Label : TradeNamesMember to label_TradeNamesMember" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_PatentsAndTechnologicalKnowHowMember" xlink:label="PatentsAndTechnologicalKnowHowMember" xlink:title="PatentsAndTechnologicalKnowHowMember" />
    <link:label xlink:type="resource" xlink:label="label_PatentsAndTechnologicalKnowHowMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_PatentsAndTechnologicalKnowHowMember" xml:lang="en-US" id="label_PatentsAndTechnologicalKnowHowMember">Represents information pertaining to Patents and Technological Know-how.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PatentsAndTechnologicalKnowHowMember" xlink:to="label_PatentsAndTechnologicalKnowHowMember" xlink:title="Label : PatentsAndTechnologicalKnowHowMember to label_PatentsAndTechnologicalKnowHowMember" />
    <link:label xlink:type="resource" xlink:label="label_PatentsAndTechnologicalKnowHowMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PatentsAndTechnologicalKnowHowMember_1" xml:lang="en-US" id="label_PatentsAndTechnologicalKnowHowMember_1">Patents and Technological Know-how [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PatentsAndTechnologicalKnowHowMember" xlink:to="label_PatentsAndTechnologicalKnowHowMember_1" xlink:title="Label : PatentsAndTechnologicalKnowHowMember to label_PatentsAndTechnologicalKnowHowMember_1" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_ProprietarySoftwareMember" xlink:label="ProprietarySoftwareMember" xlink:title="ProprietarySoftwareMember" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProprietarySoftwareMember" xlink:to="label_ProprietarySoftwareMember" xlink:title="Label : ProprietarySoftwareMember to label_ProprietarySoftwareMember" />
    <link:label xlink:type="resource" xlink:label="label_ProprietarySoftwareMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProprietarySoftwareMember_1" xml:lang="en-US" id="label_ProprietarySoftwareMember_1">Proprietary Software [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProprietarySoftwareMember" xlink:to="label_ProprietarySoftwareMember_1" xlink:title="Label : ProprietarySoftwareMember to label_ProprietarySoftwareMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="OtherIntangibleAssetsMember" xlink:title="OtherIntangibleAssetsMember" />
    <link:label xlink:type="resource" xlink:label="label_OtherIntangibleAssetsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherIntangibleAssetsMember" xml:lang="en-US" id="label_OtherIntangibleAssetsMember">Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherIntangibleAssetsMember" xlink:to="label_OtherIntangibleAssetsMember" xlink:title="Label : OtherIntangibleAssetsMember to label_OtherIntangibleAssetsMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:label xlink:type="resource" xlink:label="label_RangeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RangeAxis" xml:lang="en-US" id="label_RangeAxis">Statistical Measurement [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RangeAxis" xlink:to="label_RangeAxis" xlink:title="Label : RangeAxis to label_RangeAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:label xlink:type="resource" xlink:label="label_RangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RangeMember" xml:lang="en-US" id="label_RangeMember">Statistical Measurement [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RangeMember" xlink:to="label_RangeMember" xlink:title="Label : RangeMember to label_RangeMember" />
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    <link:label xlink:type="resource" xlink:label="label_MinimumMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MinimumMember" xml:lang="en-US" id="label_MinimumMember">Minimum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumMember" xlink:to="label_MinimumMember" xlink:title="Label : MinimumMember to label_MinimumMember" />
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    <link:label xlink:type="resource" xlink:label="label_MaximumMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MaximumMember" xml:lang="en-US" id="label_MaximumMember">Maximum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumMember" xlink:to="label_MaximumMember" xlink:title="Label : MaximumMember to label_MaximumMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="FiniteLivedIntangibleAssetUsefulLife" xlink:title="FiniteLivedIntangibleAssetUsefulLife" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetUsefulLife" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_FiniteLivedIntangibleAssetUsefulLife" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetUsefulLife">Estimated useful lives (in years)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetUsefulLife" xlink:to="label_FiniteLivedIntangibleAssetUsefulLife" xlink:title="Label : FiniteLivedIntangibleAssetUsefulLife to label_FiniteLivedIntangibleAssetUsefulLife" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetUsefulLife_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetUsefulLife_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetUsefulLife_1">Finite-Lived Intangible Asset, Useful Life</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetUsefulLife" xlink:to="label_FiniteLivedIntangibleAssetUsefulLife_1" xlink:title="Label : FiniteLivedIntangibleAssetUsefulLife to label_FiniteLivedIntangibleAssetUsefulLife_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="FiniteLivedIntangibleAssetsGross" xlink:title="FiniteLivedIntangibleAssetsGross" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsGross" xlink:to="label_FiniteLivedIntangibleAssetsGross" xlink:title="Label : FiniteLivedIntangibleAssetsGross to label_FiniteLivedIntangibleAssetsGross" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsGross_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FiniteLivedIntangibleAssetsGross_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsGross_1">Intangible assets, gross</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsGross" xlink:to="label_FiniteLivedIntangibleAssetsGross_1" xlink:title="Label : FiniteLivedIntangibleAssetsGross to label_FiniteLivedIntangibleAssetsGross_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="FiniteLivedIntangibleAssetsAccumulatedAmortization" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="label_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:title="Label : FiniteLivedIntangibleAssetsAccumulatedAmortization to label_FiniteLivedIntangibleAssetsAccumulatedAmortization" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1" xlink:title="Label : FiniteLivedIntangibleAssetsAccumulatedAmortization to label_FiniteLivedIntangibleAssetsAccumulatedAmortization_1" />
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    <link:label xlink:type="resource" xlink:label="label_AmortizationOfIntangibleAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmortizationOfIntangibleAssets" xml:lang="en-US" id="label_AmortizationOfIntangibleAssets">Amortization of Intangible Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmortizationOfIntangibleAssets" xlink:to="label_AmortizationOfIntangibleAssets" xlink:title="Label : AmortizationOfIntangibleAssets to label_AmortizationOfIntangibleAssets" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear">2021 (Remainder)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear to label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1">Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear to label_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_1" />
    <link:label xlink:type="resource" xlink:label="label_BasisOfAccountingPolicyPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BasisOfAccountingPolicyPolicyTextBlock_1" xml:lang="en-US" id="label_BasisOfAccountingPolicyPolicyTextBlock_1">Basis of Accounting, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BasisOfAccountingPolicyPolicyTextBlock" xlink:to="label_BasisOfAccountingPolicyPolicyTextBlock_1" xlink:title="Label : BasisOfAccountingPolicyPolicyTextBlock to label_BasisOfAccountingPolicyPolicyTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo">2023</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo to label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_1">Finite-Lived Intangible Assets, Amortization Expense, Year Two</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_1" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo to label_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseYearThree to label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_1">Finite-Lived Intangible Assets, Amortization Expense, Year Three</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_1" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseYearThree to label_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseYearFour to label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1">Finite-Lived Intangible Assets, Amortization Expense, Year Four</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseYearFour to label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseYearFive to label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_1">Finite-Lived Intangible Assets, Amortization Expense, Year Five</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_1" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseYearFive to label_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:title="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive to label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_1" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_1">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:to="label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_1" xlink:title="Label : FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive to label_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryRawMaterialsNetOfReserves" xlink:to="label_InventoryRawMaterialsNetOfReserves" xlink:title="Label : InventoryRawMaterialsNetOfReserves to label_InventoryRawMaterialsNetOfReserves" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryRawMaterialsNetOfReserves" xlink:to="label_InventoryRawMaterialsNetOfReserves_1" xlink:title="Label : InventoryRawMaterialsNetOfReserves to label_InventoryRawMaterialsNetOfReserves_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:label="InventoryFinishedGoodsNetOfReserves" xlink:title="InventoryFinishedGoodsNetOfReserves" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryFinishedGoodsNetOfReserves" xlink:to="label_InventoryFinishedGoodsNetOfReserves" xlink:title="Label : InventoryFinishedGoodsNetOfReserves to label_InventoryFinishedGoodsNetOfReserves" />
    <link:label xlink:type="resource" xlink:label="label_InventoryFinishedGoodsNetOfReserves_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_InventoryFinishedGoodsNetOfReserves_1" xml:lang="en-US" id="label_InventoryFinishedGoodsNetOfReserves_1">Finished goods</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryFinishedGoodsNetOfReserves" xlink:to="label_InventoryFinishedGoodsNetOfReserves_1" xlink:title="Label : InventoryFinishedGoodsNetOfReserves to label_InventoryFinishedGoodsNetOfReserves_1" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_InventoryNoncurrentRawMaterialsNetOfReserves" xlink:label="InventoryNoncurrentRawMaterialsNetOfReserves" xlink:title="InventoryNoncurrentRawMaterialsNetOfReserves" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrentRawMaterialsNetOfReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryNoncurrentRawMaterialsNetOfReserves" xml:lang="en-US" id="label_InventoryNoncurrentRawMaterialsNetOfReserves">Inventory Noncurrent Raw Materials Net of Reserves</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNoncurrentRawMaterialsNetOfReserves" xlink:to="label_InventoryNoncurrentRawMaterialsNetOfReserves" xlink:title="Label : InventoryNoncurrentRawMaterialsNetOfReserves to label_InventoryNoncurrentRawMaterialsNetOfReserves" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrentRawMaterialsNetOfReserves_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_InventoryNoncurrentRawMaterialsNetOfReserves_1" xml:lang="en-US" id="label_InventoryNoncurrentRawMaterialsNetOfReserves_1">Raw materials</link:label>
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    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrentRawMaterialsNetOfReserves_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_InventoryNoncurrentRawMaterialsNetOfReserves_2" xml:lang="en-US" id="label_InventoryNoncurrentRawMaterialsNetOfReserves_2">Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items that are classified as noncurrent.</link:label>
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    <link:label xlink:type="resource" xlink:label="label_ScheduleOfStockholdersEquityTableTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfStockholdersEquityTableTextBlock_1" xml:lang="en-US" id="label_ScheduleOfStockholdersEquityTableTextBlock_1">Schedule of changes in stockholders' equity</link:label>
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    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrentFinishedGoodsNetOfReserves_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_InventoryNoncurrentFinishedGoodsNetOfReserves_1" xml:lang="en-US" id="label_InventoryNoncurrentFinishedGoodsNetOfReserves_1">Finished goods</link:label>
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    <link:label xlink:type="resource" xlink:label="label_AreaOfRealEstateProperty" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AreaOfRealEstateProperty" xml:lang="en-US" id="label_AreaOfRealEstateProperty">Area of real estate property</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseRenewalTerm" xlink:label="LesseeOperatingLeaseRenewalTerm" xlink:title="LesseeOperatingLeaseRenewalTerm" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseRenewalTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseRenewalTerm" xml:lang="en-US" id="label_LesseeOperatingLeaseRenewalTerm">Lessee, Operating Lease, Renewal Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseRenewalTerm" xlink:to="label_LesseeOperatingLeaseRenewalTerm" xlink:title="Label : LesseeOperatingLeaseRenewalTerm to label_LesseeOperatingLeaseRenewalTerm" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseRenewalTerm_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseRenewalTerm_1" xml:lang="en-US" id="label_LesseeOperatingLeaseRenewalTerm_1">Lessee, Operating Lease, Renewal Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseRenewalTerm" xlink:to="label_LesseeOperatingLeaseRenewalTerm_1" xlink:title="Label : LesseeOperatingLeaseRenewalTerm to label_LesseeOperatingLeaseRenewalTerm_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseExpense" xlink:label="OperatingLeaseExpense" xlink:title="OperatingLeaseExpense" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseExpense" xml:lang="en-US" id="label_OperatingLeaseExpense">Operating Lease, Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseExpense" xlink:to="label_OperatingLeaseExpense" xlink:title="Label : OperatingLeaseExpense to label_OperatingLeaseExpense" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseExpense_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_OperatingLeaseExpense_1" xml:lang="en-US" id="label_OperatingLeaseExpense_1">Rent expense</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:label="OperatingLeasePayments" xlink:title="OperatingLeasePayments" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeasePayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasePayments" xml:lang="en-US" id="label_OperatingLeasePayments">Operating cash flows from operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasePayments" xlink:to="label_OperatingLeasePayments" xlink:title="Label : OperatingLeasePayments to label_OperatingLeasePayments" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:label="RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:title="RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" />
    <link:label xlink:type="resource" xlink:label="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xml:lang="en-US" id="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability">Operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:to="label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:title="Label : RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability to label_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="OperatingLeaseLiabilityCurrent" xlink:title="OperatingLeaseLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseLiabilityCurrent" xml:lang="en-US" id="label_OperatingLeaseLiabilityCurrent">Operating Lease, Liability, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityCurrent" xlink:to="label_OperatingLeaseLiabilityCurrent" xlink:title="Label : OperatingLeaseLiabilityCurrent to label_OperatingLeaseLiabilityCurrent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityCurrent_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseLiabilityCurrent_1" xml:lang="en-US" id="label_OperatingLeaseLiabilityCurrent_1">Current portion of operating lease liabilities, included in accrued liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityCurrent" xlink:to="label_OperatingLeaseLiabilityCurrent_1" xlink:title="Label : OperatingLeaseLiabilityCurrent to label_OperatingLeaseLiabilityCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:title="OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xml:lang="en-US" id="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1">Operating Lease, Weighted Average Remaining Lease Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="label_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:title="Label : OperatingLeaseWeightedAverageRemainingLeaseTerm1 to label_OperatingLeaseWeightedAverageRemainingLeaseTerm1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="OperatingLeaseWeightedAverageDiscountRatePercent" xlink:title="OperatingLeaseWeightedAverageDiscountRatePercent" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeaseWeightedAverageDiscountRatePercent" xml:lang="en-US" id="label_OperatingLeaseWeightedAverageDiscountRatePercent">Weighted average discount rate for operating leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="label_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:title="Label : OperatingLeaseWeightedAverageDiscountRatePercent to label_OperatingLeaseWeightedAverageDiscountRatePercent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice">Options outstanding at beginning of year (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_1" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_1" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_1">Options outstanding at end of year (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_1" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod">Number of shares, forfeited prior to vesting (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree">Lessee, Operating Lease, Liability, Payments, Due Year Three</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearThree to label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_1" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_1">Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_1" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod_1" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1">2024</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearThree to label_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour">Lessee, Operating Lease, Liability, Payments, Due Year Four</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearFour to label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueYearFour to label_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive">Lessee, Operating Lease, Liability, Payments, Due after Year Five</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive to label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_1">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive to label_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="LesseeOperatingLeaseLiabilityPaymentsDue" xlink:title="LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDue" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDue">Lessee, Operating Lease, Liability, Payments, Due</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDue to label_LesseeOperatingLeaseLiabilityPaymentsDue" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityPaymentsDue_1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LesseeOperatingLeaseLiabilityPaymentsDue_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityPaymentsDue_1">Total lease payments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="label_LesseeOperatingLeaseLiabilityPaymentsDue_1" xlink:title="Label : LesseeOperatingLeaseLiabilityPaymentsDue to label_LesseeOperatingLeaseLiabilityPaymentsDue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:title="LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount">Lessee, Operating Lease, Liability, Undiscounted Excess Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:title="Label : LesseeOperatingLeaseLiabilityUndiscountedExcessAmount to label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" />
    <link:label xlink:type="resource" xlink:label="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1" xml:lang="en-US" id="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1">Less: Imputed interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1" xlink:title="Label : LesseeOperatingLeaseLiabilityUndiscountedExcessAmount to label_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod">Number of shares, canceled or expired (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="StatementEquityComponentsAxis" xlink:title="StatementEquityComponentsAxis" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementEquityComponentsAxis" xlink:to="label_StatementEquityComponentsAxis" xlink:title="Label : StatementEquityComponentsAxis to label_StatementEquityComponentsAxis" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_1" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="EquityComponentDomain" xlink:title="EquityComponentDomain" />
    <link:label xlink:type="resource" xlink:label="label_EquityComponentDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityComponentDomain" xml:lang="en-US" id="label_EquityComponentDomain">Equity Component [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityComponentDomain" xlink:to="label_EquityComponentDomain" xlink:title="Label : EquityComponentDomain to label_EquityComponentDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember" xlink:label="CommonStockIncludingAdditionalPaidInCapitalMember" xlink:title="CommonStockIncludingAdditionalPaidInCapitalMember" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockIncludingAdditionalPaidInCapitalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockIncludingAdditionalPaidInCapitalMember" xml:lang="en-US" id="label_CommonStockIncludingAdditionalPaidInCapitalMember">Common stock and additional paid-in capital [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockIncludingAdditionalPaidInCapitalMember" xlink:to="label_CommonStockIncludingAdditionalPaidInCapitalMember" xlink:title="Label : CommonStockIncludingAdditionalPaidInCapitalMember to label_CommonStockIncludingAdditionalPaidInCapitalMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="AccumulatedOtherComprehensiveIncomeMember" xlink:title="AccumulatedOtherComprehensiveIncomeMember" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AccumulatedOtherComprehensiveIncomeMember" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeMember">Accumulated other comprehensive loss [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeMember" xlink:to="label_AccumulatedOtherComprehensiveIncomeMember" xlink:title="Label : AccumulatedOtherComprehensiveIncomeMember to label_AccumulatedOtherComprehensiveIncomeMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="RetainedEarningsMember" xlink:title="RetainedEarningsMember" />
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RetainedEarningsMember" xml:lang="en-US" id="label_RetainedEarningsMember">Accumulated deficit [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsMember" xlink:to="label_RetainedEarningsMember" xlink:title="Label : RetainedEarningsMember to label_RetainedEarningsMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:label="StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:title="StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan">Proceeds from employee stock purchase plan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:to="label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:title="Label : StockIssuedDuringPeriodValueEmployeeStockPurchasePlan to label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodValue" xlink:label="StockRepurchasedDuringPeriodValue" xlink:title="StockRepurchasedDuringPeriodValue" />
    <link:label xlink:type="resource" xlink:label="label_StockRepurchasedDuringPeriodValue" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_StockRepurchasedDuringPeriodValue" xml:lang="en-US" id="label_StockRepurchasedDuringPeriodValue">Stock repurchased</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchasedDuringPeriodValue" xlink:to="label_StockRepurchasedDuringPeriodValue" xlink:title="Label : StockRepurchasedDuringPeriodValue to label_StockRepurchasedDuringPeriodValue" />
    <link:label xlink:type="resource" xlink:label="label_StockRepurchasedDuringPeriodValue_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockRepurchasedDuringPeriodValue_1" xml:lang="en-US" id="label_StockRepurchasedDuringPeriodValue_1">Stock Repurchased During Period, Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchasedDuringPeriodValue" xlink:to="label_StockRepurchasedDuringPeriodValue_1" xlink:title="Label : StockRepurchasedDuringPeriodValue to label_StockRepurchasedDuringPeriodValue_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsCommonStockCash" xlink:label="DividendsCommonStockCash" xlink:title="DividendsCommonStockCash" />
    <link:label xlink:type="resource" xlink:label="label_DividendsCommonStockCash" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DividendsCommonStockCash" xml:lang="en-US" id="label_DividendsCommonStockCash">Dividends, Common Stock, Cash</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DividendsCommonStockCash" xlink:to="label_DividendsCommonStockCash" xlink:title="Label : DividendsCommonStockCash to label_DividendsCommonStockCash" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockDividendsPerShareCashPaid" xlink:label="CommonStockDividendsPerShareCashPaid" xlink:title="CommonStockDividendsPerShareCashPaid" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockDividendsPerShareCashPaid" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockDividendsPerShareCashPaid" xml:lang="en-US" id="label_CommonStockDividendsPerShareCashPaid">Cash dividends, per share (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockDividendsPerShareCashPaid" xlink:to="label_CommonStockDividendsPerShareCashPaid" xlink:title="Label : CommonStockDividendsPerShareCashPaid to label_CommonStockDividendsPerShareCashPaid" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized">Number of shares authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" />
    <link:label xlink:type="resource" xlink:label="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xml:lang="en-US" id="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:title="Label : FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xml:lang="en-US" id="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber">Number of options, outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:title="Label : ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber to label_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:title="StockIssuedDuringPeriodSharesStockOptionsExercised" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_StockIssuedDuringPeriodSharesStockOptionsExercised" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesStockOptionsExercised">Number of shares, exercised (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="label_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:title="Label : StockIssuedDuringPeriodSharesStockOptionsExercised to label_StockIssuedDuringPeriodSharesStockOptionsExercised" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodSharesStockOptionsExercised_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodSharesStockOptionsExercised_1" xml:lang="en-US" id="label_StockIssuedDuringPeriodSharesStockOptionsExercised_1">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="label_StockIssuedDuringPeriodSharesStockOptionsExercised_1" xlink:title="Label : StockIssuedDuringPeriodSharesStockOptionsExercised to label_StockIssuedDuringPeriodSharesStockOptionsExercised_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="IncomeStatementLocationAxis" xlink:title="IncomeStatementLocationAxis" />
    <link:label xlink:type="resource" xlink:label="label_IncomeStatementLocationAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeStatementLocationAxis" xml:lang="en-US" id="label_IncomeStatementLocationAxis">Income Statement Location [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeStatementLocationAxis" xlink:to="label_IncomeStatementLocationAxis" xlink:title="Label : IncomeStatementLocationAxis to label_IncomeStatementLocationAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="IncomeStatementLocationDomain" xlink:title="IncomeStatementLocationDomain" />
    <link:label xlink:type="resource" xlink:label="label_IncomeStatementLocationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeStatementLocationDomain" xml:lang="en-US" id="label_IncomeStatementLocationDomain">Income Statement Location [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeStatementLocationDomain" xlink:to="label_IncomeStatementLocationDomain" xlink:title="Label : IncomeStatementLocationDomain to label_IncomeStatementLocationDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostOfSalesMember" xlink:label="CostOfSalesMember" xlink:title="CostOfSalesMember" />
    <link:label xlink:type="resource" xlink:label="label_CostOfSalesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CostOfSalesMember" xml:lang="en-US" id="label_CostOfSalesMember">Cost of goods sold [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfSalesMember" xlink:to="label_CostOfSalesMember" xlink:title="Label : CostOfSalesMember to label_CostOfSalesMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingAndMarketingExpenseMember" xlink:label="SellingAndMarketingExpenseMember" xlink:title="SellingAndMarketingExpenseMember" />
    <link:label xlink:type="resource" xlink:label="label_SellingAndMarketingExpenseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SellingAndMarketingExpenseMember" xml:lang="en-US" id="label_SellingAndMarketingExpenseMember">Sales and marketing [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingAndMarketingExpenseMember" xlink:to="label_SellingAndMarketingExpenseMember" xlink:title="Label : SellingAndMarketingExpenseMember to label_SellingAndMarketingExpenseMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember" xlink:label="ResearchAndDevelopmentExpenseMember" xlink:title="ResearchAndDevelopmentExpenseMember" />
    <link:label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpenseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ResearchAndDevelopmentExpenseMember" xml:lang="en-US" id="label_ResearchAndDevelopmentExpenseMember">Research and product development [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpenseMember" xlink:to="label_ResearchAndDevelopmentExpenseMember" xlink:title="Label : ResearchAndDevelopmentExpenseMember to label_ResearchAndDevelopmentExpenseMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember" xlink:label="GeneralAndAdministrativeExpenseMember" xlink:title="GeneralAndAdministrativeExpenseMember" />
    <link:label xlink:type="resource" xlink:label="label_GeneralAndAdministrativeExpenseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_GeneralAndAdministrativeExpenseMember" xml:lang="en-US" id="label_GeneralAndAdministrativeExpenseMember">General and administrative [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GeneralAndAdministrativeExpenseMember" xlink:to="label_GeneralAndAdministrativeExpenseMember" xlink:title="Label : GeneralAndAdministrativeExpenseMember to label_GeneralAndAdministrativeExpenseMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis" />
    <link:label xlink:type="resource" xlink:label="label_FairValueByFairValueHierarchyLevelAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueByFairValueHierarchyLevelAxis" xml:lang="en-US" id="label_FairValueByFairValueHierarchyLevelAxis">Fair Value Hierarchy and NAV [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="label_FairValueByFairValueHierarchyLevelAxis" xlink:title="Label : FairValueByFairValueHierarchyLevelAxis to label_FairValueByFairValueHierarchyLevelAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain" />
    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementsFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueMeasurementsFairValueHierarchyDomain" xml:lang="en-US" id="label_FairValueMeasurementsFairValueHierarchyDomain">Fair Value Hierarchy and NAV [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="label_FairValueMeasurementsFairValueHierarchyDomain" xlink:title="Label : FairValueMeasurementsFairValueHierarchyDomain to label_FairValueMeasurementsFairValueHierarchyDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="FairValueInputsLevel1Member" xlink:title="FairValueInputsLevel1Member" />
    <link:label xlink:type="resource" xlink:label="label_FairValueInputsLevel1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueInputsLevel1Member" xml:lang="en-US" id="label_FairValueInputsLevel1Member">Level 1 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueInputsLevel1Member" xlink:to="label_FairValueInputsLevel1Member" xlink:title="Label : FairValueInputsLevel1Member to label_FairValueInputsLevel1Member" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="DepreciationAndAmortization" xlink:title="DepreciationAndAmortization" />
    <link:label xlink:type="resource" xlink:label="label_DepreciationAndAmortization" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DepreciationAndAmortization" xml:lang="en-US" id="label_DepreciationAndAmortization">Depreciation, Depletion and Amortization, Nonproduction</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationAndAmortization" xlink:to="label_DepreciationAndAmortization" xlink:title="Label : DepreciationAndAmortization to label_DepreciationAndAmortization" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromSaleAndMaturityOfMarketableSecurities_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProceedsFromSaleAndMaturityOfMarketableSecurities_1" xml:lang="en-US" id="label_ProceedsFromSaleAndMaturityOfMarketableSecurities_1">Proceeds from Sale and Maturity of Marketable Securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleAndMaturityOfMarketableSecurities" xlink:to="label_ProceedsFromSaleAndMaturityOfMarketableSecurities_1" xlink:title="Label : ProceedsFromSaleAndMaturityOfMarketableSecurities to label_ProceedsFromSaleAndMaturityOfMarketableSecurities_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="SupplementalCashFlowInformationAbstract" xlink:title="SupplementalCashFlowInformationAbstract" />
    <link:label xlink:type="resource" xlink:label="label_SupplementalCashFlowInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SupplementalCashFlowInformationAbstract" xml:lang="en-US" id="label_SupplementalCashFlowInformationAbstract">Supplemental Cash Flow Information [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SupplementalCashFlowInformationAbstract" xlink:to="label_SupplementalCashFlowInformationAbstract" xlink:title="Label : SupplementalCashFlowInformationAbstract to label_SupplementalCashFlowInformationAbstract" />
    <link:label xlink:type="resource" xlink:label="label_DepreciationAndAmortization_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_DepreciationAndAmortization_1" xml:lang="en-US" id="label_DepreciationAndAmortization_1">Depreciation and amortization expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationAndAmortization" xlink:to="label_DepreciationAndAmortization_1" xlink:title="Label : DepreciationAndAmortization to label_DepreciationAndAmortization_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireIntangibleAssets" xlink:label="PaymentsToAcquireIntangibleAssets" xlink:title="PaymentsToAcquireIntangibleAssets" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireIntangibleAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_PaymentsToAcquireIntangibleAssets" xml:lang="en-US" id="label_PaymentsToAcquireIntangibleAssets">Purchase of intangibles</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireIntangibleAssets" xlink:to="label_PaymentsToAcquireIntangibleAssets" xlink:title="Label : PaymentsToAcquireIntangibleAssets to label_PaymentsToAcquireIntangibleAssets" />
    <link:label xlink:type="resource" xlink:label="label_SupplementalCashFlowInformationAbstract_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_SupplementalCashFlowInformationAbstract_1" xml:lang="en-US" id="label_SupplementalCashFlowInformationAbstract_1">Supplemental cash flow activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SupplementalCashFlowInformationAbstract" xlink:to="label_SupplementalCashFlowInformationAbstract_1" xlink:title="Label : SupplementalCashFlowInformationAbstract to label_SupplementalCashFlowInformationAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrentAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetsCurrentAbstract_1" xml:lang="en-US" id="label_AssetsCurrentAbstract_1">Amount of amortization expense attributable to right-of-use asset from operating lease.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrentAbstract" xlink:to="label_AssetsCurrentAbstract_1" xlink:title="Label : AssetsCurrentAbstract to label_AssetsCurrentAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1" xml:lang="en-US" id="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1">Fair Value Measurements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1" xlink:title="Label : FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAtCarryingValue_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CashAndCashEquivalentsAtCarryingValue_2" xml:lang="en-US" id="label_CashAndCashEquivalentsAtCarryingValue_2">Cash and cash equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAtCarryingValue" xlink:to="label_CashAndCashEquivalentsAtCarryingValue_2" xlink:title="Label : CashAndCashEquivalentsAtCarryingValue to label_CashAndCashEquivalentsAtCarryingValue_2" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeasedAssetsLineItems" xlink:label="OperatingLeasedAssetsLineItems" xlink:title="OperatingLeasedAssetsLineItems" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeasedAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OperatingLeasedAssetsLineItems" xml:lang="en-US" id="label_OperatingLeasedAssetsLineItems">Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeasedAssetsLineItems" xlink:to="label_OperatingLeasedAssetsLineItems" xlink:title="Label : OperatingLeasedAssetsLineItems to label_OperatingLeasedAssetsLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfOperatingLeasedAssetsTable" xlink:label="ScheduleOfOperatingLeasedAssetsTable" xlink:title="ScheduleOfOperatingLeasedAssetsTable" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfOperatingLeasedAssetsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfOperatingLeasedAssetsTable" xml:lang="en-US" id="label_ScheduleOfOperatingLeasedAssetsTable">Schedule of Operating Leased Assets [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfOperatingLeasedAssetsTable" xlink:to="label_ScheduleOfOperatingLeasedAssetsTable" xlink:title="Label : ScheduleOfOperatingLeasedAssetsTable to label_ScheduleOfOperatingLeasedAssetsTable" />
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalentsAtCarryingValue_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashAndCashEquivalentsAtCarryingValue_3" xml:lang="en-US" id="label_CashAndCashEquivalentsAtCarryingValue_3">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsAtCarryingValue" xlink:to="label_CashAndCashEquivalentsAtCarryingValue_3" xlink:title="Label : CashAndCashEquivalentsAtCarryingValue to label_CashAndCashEquivalentsAtCarryingValue_3" />
    <link:label xlink:type="resource" xlink:label="label_MarketableSecuritiesCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MarketableSecuritiesCurrent_1" xml:lang="en-US" id="label_MarketableSecuritiesCurrent_1">Marketable Securities, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketableSecuritiesCurrent" xlink:to="label_MarketableSecuritiesCurrent_1" xlink:title="Label : MarketableSecuritiesCurrent to label_MarketableSecuritiesCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:label="InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:title="InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xml:lang="en-US" id="label_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock">Marketable Securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:to="label_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" xlink:title="Label : InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock to label_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_AccountsReceivableNetCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccountsReceivableNetCurrent_1" xml:lang="en-US" id="label_AccountsReceivableNetCurrent_1">Accounts Receivable, after Allowance for Credit Loss, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsReceivableNetCurrent" xlink:to="label_AccountsReceivableNetCurrent_1" xlink:title="Label : AccountsReceivableNetCurrent to label_AccountsReceivableNetCurrent_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock">Schedule of available-for-sale marketable securities in a gross unrealized loss position</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock" xlink:to="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock" xlink:title="Label : AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock to label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock" xlink:label="FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock" xlink:title="FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock" xml:lang="en-US" id="label_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock">Schedule of intangible assets and estimated useful lives</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock" xlink:to="label_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock" xlink:title="Label : FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock to label_FiniteLivedAndIndefiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:label="ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:title="ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xml:lang="en-US" id="label_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock">Schedule of estimated future amortization expense of intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:to="label_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:title="Label : ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock to label_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNet_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_InventoryNet_2" xml:lang="en-US" id="label_InventoryNet_2">Total current inventory</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="label_InventoryNet_2" xlink:title="Label : InventoryNet to label_InventoryNet_2" />
    <link:label xlink:type="resource" xlink:label="label_PrepaidExpenseAndOtherAssetsCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PrepaidExpenseAndOtherAssetsCurrent_1" xml:lang="en-US" id="label_PrepaidExpenseAndOtherAssetsCurrent_1">Prepaid Expense and Other Assets, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaidExpenseAndOtherAssetsCurrent" xlink:to="label_PrepaidExpenseAndOtherAssetsCurrent_1" xlink:title="Label : PrepaidExpenseAndOtherAssetsCurrent to label_PrepaidExpenseAndOtherAssetsCurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_MarketableSecuritiesNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MarketableSecuritiesNoncurrent_1" xml:lang="en-US" id="label_MarketableSecuritiesNoncurrent_1">Marketable Securities, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketableSecuritiesNoncurrent" xlink:to="label_MarketableSecuritiesNoncurrent_1" xlink:title="Label : MarketableSecuritiesNoncurrent to label_MarketableSecuritiesNoncurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_InventoryNoncurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InventoryNoncurrent_2" xml:lang="en-US" id="label_InventoryNoncurrent_2">Inventory, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNoncurrent" xlink:to="label_InventoryNoncurrent_2" xlink:title="Label : InventoryNoncurrent to label_InventoryNoncurrent_2" />
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentNet_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PropertyPlantAndEquipmentNet_1" xml:lang="en-US" id="label_PropertyPlantAndEquipmentNet_1">Property, Plant and Equipment, Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentNet" xlink:to="label_PropertyPlantAndEquipmentNet_1" xlink:title="Label : PropertyPlantAndEquipmentNet to label_PropertyPlantAndEquipmentNet_1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseRightOfUseAsset_2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingLeaseRightOfUseAsset_2" xml:lang="en-US" id="label_OperatingLeaseRightOfUseAsset_2">Operating lease right-of-use assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseRightOfUseAsset" xlink:to="label_OperatingLeaseRightOfUseAsset_2" xlink:title="Label : OperatingLeaseRightOfUseAsset to label_OperatingLeaseRightOfUseAsset_2" />
    <link:label xlink:type="resource" xlink:label="label_IntangibleAssetsNetExcludingGoodwill_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IntangibleAssetsNetExcludingGoodwill_1" xml:lang="en-US" id="label_IntangibleAssetsNetExcludingGoodwill_1">Intangible Assets, Net (Excluding Goodwill)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsNetExcludingGoodwill" xlink:to="label_IntangibleAssetsNetExcludingGoodwill_1" xlink:title="Label : IntangibleAssetsNetExcludingGoodwill to label_IntangibleAssetsNetExcludingGoodwill_1" />
    <link:label xlink:type="resource" xlink:label="label_OtherAssetsNoncurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherAssetsNoncurrent_1" xml:lang="en-US" id="label_OtherAssetsNoncurrent_1">Other Assets, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsNoncurrent" xlink:to="label_OtherAssetsNoncurrent_1" xlink:title="Label : OtherAssetsNoncurrent to label_OtherAssetsNoncurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrentAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesCurrentAbstract_1" xml:lang="en-US" id="label_LiabilitiesCurrentAbstract_1">Liabilities, Current [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrentAbstract" xlink:to="label_LiabilitiesCurrentAbstract_1" xlink:title="Label : LiabilitiesCurrentAbstract to label_LiabilitiesCurrentAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_AccountsPayableCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccountsPayableCurrent_1" xml:lang="en-US" id="label_AccountsPayableCurrent_1">Accounts Payable, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableCurrent" xlink:to="label_AccountsPayableCurrent_1" xlink:title="Label : AccountsPayableCurrent to label_AccountsPayableCurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_AccruedLiabilitiesCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccruedLiabilitiesCurrent_1" xml:lang="en-US" id="label_AccruedLiabilitiesCurrent_1">Accrued Liabilities, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedLiabilitiesCurrent" xlink:to="label_AccruedLiabilitiesCurrent_1" xlink:title="Label : AccruedLiabilitiesCurrent to label_AccruedLiabilitiesCurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiabilityNoncurrent_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseLiabilityNoncurrent_2" xml:lang="en-US" id="label_OperatingLeaseLiabilityNoncurrent_2">Operating Lease, Liability, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingLeaseLiabilityNoncurrent" xlink:to="label_OperatingLeaseLiabilityNoncurrent_2" xlink:title="Label : OperatingLeaseLiabilityNoncurrent to label_OperatingLeaseLiabilityNoncurrent_2" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLiabilitiesNoncurrent" xlink:to="label_OtherLiabilitiesNoncurrent_1" xlink:title="Label : OtherLiabilitiesNoncurrent to label_OtherLiabilitiesNoncurrent_1" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:label="DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:title="DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xml:lang="en-US" id="label_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract">Stock-based Compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="label_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:title="Label : DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract to label_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsAccumulatedDeficit_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RetainedEarningsAccumulatedDeficit_1" xml:lang="en-US" id="label_RetainedEarningsAccumulatedDeficit_1">Retained Earnings (Accumulated Deficit)</link:label>
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    <link:label xlink:type="resource" xlink:label="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1" xml:lang="en-US" id="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1">Stock-based Compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:to="label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1" xlink:title="Label : EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems to label_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_1" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensation_1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_ShareBasedCompensation_1" xml:lang="en-US" id="label_ShareBasedCompensation_1">Share-based Compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensation" xlink:to="label_ShareBasedCompensation_1" xlink:title="Label : ShareBasedCompensation to label_ShareBasedCompensation_1" />
    <link:label xlink:type="resource" xlink:label="label_AllowanceForDoubtfulAccountsReceivableCurrent_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AllowanceForDoubtfulAccountsReceivableCurrent_1" xml:lang="en-US" id="label_AllowanceForDoubtfulAccountsReceivableCurrent_1">Accounts Receivable, Allowance for Credit Loss, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllowanceForDoubtfulAccountsReceivableCurrent" xlink:to="label_AllowanceForDoubtfulAccountsReceivableCurrent_1" xlink:title="Label : AllowanceForDoubtfulAccountsReceivableCurrent to label_AllowanceForDoubtfulAccountsReceivableCurrent_1" />
    <link:label xlink:type="resource" xlink:label="label_CostOfSalesMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostOfSalesMember_1" xml:lang="en-US" id="label_CostOfSalesMember_1">Cost of Sales [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfSalesMember" xlink:to="label_CostOfSalesMember_1" xlink:title="Label : CostOfSalesMember to label_CostOfSalesMember_1" />
    <link:label xlink:type="resource" xlink:label="label_SellingAndMarketingExpenseMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SellingAndMarketingExpenseMember_1" xml:lang="en-US" id="label_SellingAndMarketingExpenseMember_1">Selling and Marketing Expense [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingAndMarketingExpenseMember" xlink:to="label_SellingAndMarketingExpenseMember_1" xlink:title="Label : SellingAndMarketingExpenseMember to label_SellingAndMarketingExpenseMember_1" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockParOrStatedValuePerShare_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CommonStockParOrStatedValuePerShare_1" xml:lang="en-US" id="label_CommonStockParOrStatedValuePerShare_1">Common stock, par value (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockParOrStatedValuePerShare" xlink:to="label_CommonStockParOrStatedValuePerShare_1" xlink:title="Label : CommonStockParOrStatedValuePerShare to label_CommonStockParOrStatedValuePerShare_1" />
    <link:label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpenseMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ResearchAndDevelopmentExpenseMember_1" xml:lang="en-US" id="label_ResearchAndDevelopmentExpenseMember_1">Research and Development Expense [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpenseMember" xlink:to="label_ResearchAndDevelopmentExpenseMember_1" xlink:title="Label : ResearchAndDevelopmentExpenseMember to label_ResearchAndDevelopmentExpenseMember_1" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesAuthorized_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockSharesAuthorized_1" xml:lang="en-US" id="label_CommonStockSharesAuthorized_1">Common Stock, Shares Authorized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesAuthorized" xlink:to="label_CommonStockSharesAuthorized_1" xlink:title="Label : CommonStockSharesAuthorized to label_CommonStockSharesAuthorized_1" />
    <link:label xlink:type="resource" xlink:label="label_GeneralAndAdministrativeExpenseMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GeneralAndAdministrativeExpenseMember_1" xml:lang="en-US" id="label_GeneralAndAdministrativeExpenseMember_1">General and Administrative Expense [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GeneralAndAdministrativeExpenseMember" xlink:to="label_GeneralAndAdministrativeExpenseMember_1" xlink:title="Label : GeneralAndAdministrativeExpenseMember to label_GeneralAndAdministrativeExpenseMember_1" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesIssued_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockSharesIssued_1" xml:lang="en-US" id="label_CommonStockSharesIssued_1">Common Stock, Shares, Issued</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesIssued" xlink:to="label_CommonStockSharesIssued_1" xlink:title="Label : CommonStockSharesIssued to label_CommonStockSharesIssued_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:label="ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:title="ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xml:lang="en-US" id="label_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock">Schedule of fair value of the financial instruments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:to="label_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:title="Label : ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock to label_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockSharesOutstanding_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockSharesOutstanding_1" xml:lang="en-US" id="label_CommonStockSharesOutstanding_1">Common Stock, Shares, Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesOutstanding" xlink:to="label_CommonStockSharesOutstanding_1" xlink:title="Label : CommonStockSharesOutstanding to label_CommonStockSharesOutstanding_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:label="StockholdersEquityNoteAbstract" xlink:title="StockholdersEquityNoteAbstract" />
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquityNoteAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockholdersEquityNoteAbstract" xml:lang="en-US" id="label_StockholdersEquityNoteAbstract">Shareholders' Equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityNoteAbstract" xlink:to="label_StockholdersEquityNoteAbstract" xlink:title="Label : StockholdersEquityNoteAbstract to label_StockholdersEquityNoteAbstract" />
    <link:label xlink:type="resource" xlink:label="label_CostOfGoodsAndServicesSold_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostOfGoodsAndServicesSold_1" xml:lang="en-US" id="label_CostOfGoodsAndServicesSold_1">Cost of Goods and Services Sold</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfGoodsAndServicesSold" xlink:to="label_CostOfGoodsAndServicesSold_1" xlink:title="Label : CostOfGoodsAndServicesSold to label_CostOfGoodsAndServicesSold_1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingExpensesAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingExpensesAbstract_1" xml:lang="en-US" id="label_OperatingExpensesAbstract_1">Operating Expenses [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpensesAbstract" xlink:to="label_OperatingExpensesAbstract_1" xlink:title="Label : OperatingExpensesAbstract to label_OperatingExpensesAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_SellingAndMarketingExpense_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SellingAndMarketingExpense_1" xml:lang="en-US" id="label_SellingAndMarketingExpense_1">Selling and Marketing Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SellingAndMarketingExpense" xlink:to="label_SellingAndMarketingExpense_1" xlink:title="Label : SellingAndMarketingExpense to label_SellingAndMarketingExpense_1" />
    <link:label xlink:type="resource" xlink:label="label_ResearchAndDevelopmentExpense_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ResearchAndDevelopmentExpense_1" xml:lang="en-US" id="label_ResearchAndDevelopmentExpense_1">Research and Development Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ResearchAndDevelopmentExpense" xlink:to="label_ResearchAndDevelopmentExpense_1" xlink:title="Label : ResearchAndDevelopmentExpense to label_ResearchAndDevelopmentExpense_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:title="AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xml:lang="en-US" id="label_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue">Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value</link:label>
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    <link:label xlink:type="resource" xlink:label="label_GeneralAndAdministrativeExpense_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_GeneralAndAdministrativeExpense_1" xml:lang="en-US" id="label_GeneralAndAdministrativeExpense_1">General and Administrative Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GeneralAndAdministrativeExpense" xlink:to="label_GeneralAndAdministrativeExpense_1" xlink:title="Label : GeneralAndAdministrativeExpense to label_GeneralAndAdministrativeExpense_1" />
    <link:label xlink:type="resource" xlink:label="label_OtherNonoperatingIncomeExpense_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherNonoperatingIncomeExpense_1" xml:lang="en-US" id="label_OtherNonoperatingIncomeExpense_1">Other income (expense), net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNonoperatingIncomeExpense" xlink:to="label_OtherNonoperatingIncomeExpense_1" xlink:title="Label : OtherNonoperatingIncomeExpense to label_OtherNonoperatingIncomeExpense_1" />
    <link:label xlink:type="resource" xlink:label="label_IncomeTaxExpenseBenefit_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeTaxExpenseBenefit_1" xml:lang="en-US" id="label_IncomeTaxExpenseBenefit_1">Provision for income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxExpenseBenefit" xlink:to="label_IncomeTaxExpenseBenefit_1" xlink:title="Label : IncomeTaxExpenseBenefit to label_IncomeTaxExpenseBenefit_1" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockIncludingAdditionalPaidInCapitalMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockIncludingAdditionalPaidInCapitalMember_1" xml:lang="en-US" id="label_CommonStockIncludingAdditionalPaidInCapitalMember_1">Common Stock Including Additional Paid in Capital [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockIncludingAdditionalPaidInCapitalMember" xlink:to="label_CommonStockIncludingAdditionalPaidInCapitalMember_1" xlink:title="Label : CommonStockIncludingAdditionalPaidInCapitalMember to label_CommonStockIncludingAdditionalPaidInCapitalMember_1" />
    <link:label xlink:type="resource" xlink:label="label_AccumulatedOtherComprehensiveIncomeMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AccumulatedOtherComprehensiveIncomeMember_1" xml:lang="en-US" id="label_AccumulatedOtherComprehensiveIncomeMember_1">AOCI Attributable to Parent [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeMember" xlink:to="label_AccumulatedOtherComprehensiveIncomeMember_1" xlink:title="Label : AccumulatedOtherComprehensiveIncomeMember to label_AccumulatedOtherComprehensiveIncomeMember_1" />
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetIncomeLoss_3" xml:lang="en-US" id="label_NetIncomeLoss_3">Net Income (Loss) Attributable to Parent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss_3" xlink:title="Label : NetIncomeLoss to label_NetIncomeLoss_3" />
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RetainedEarningsMember_1" xml:lang="en-US" id="label_RetainedEarningsMember_1">Retained Earnings [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsMember" xlink:to="label_RetainedEarningsMember_1" xlink:title="Label : RetainedEarningsMember to label_RetainedEarningsMember_1" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfSharesOutstandingBasic_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WeightedAverageNumberOfSharesOutstandingBasic_1" xml:lang="en-US" id="label_WeightedAverageNumberOfSharesOutstandingBasic_1">Weighted Average Number of Shares Outstanding, Basic</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="label_WeightedAverageNumberOfSharesOutstandingBasic_1" xlink:title="Label : WeightedAverageNumberOfSharesOutstandingBasic to label_WeightedAverageNumberOfSharesOutstandingBasic_1" />
    <link:label xlink:type="resource" xlink:label="label_WeightedAverageNumberOfDilutedSharesOutstanding_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WeightedAverageNumberOfDilutedSharesOutstanding_2" xml:lang="en-US" id="label_WeightedAverageNumberOfDilutedSharesOutstanding_2">Diluted weighted average shares outstanding (in shares)</link:label>
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    <link:label xlink:type="resource" xlink:label="label_StatementLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_StatementLineItems_1" xml:lang="en-US" id="label_StatementLineItems_1">Shareholders' Equity</link:label>
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    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareDiluted_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EarningsPerShareDiluted_2" xml:lang="en-US" id="label_EarningsPerShareDiluted_2">Earnings Per Share, Diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareDiluted" xlink:to="label_EarningsPerShareDiluted_2" xlink:title="Label : EarningsPerShareDiluted to label_EarningsPerShareDiluted_2" />
    <link:label xlink:type="resource" xlink:label="label_ComprehensiveIncomeNetOfTaxAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ComprehensiveIncomeNetOfTaxAbstract_1" xml:lang="en-US" id="label_ComprehensiveIncomeNetOfTaxAbstract_1">Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTaxAbstract" xlink:to="label_ComprehensiveIncomeNetOfTaxAbstract_1" xlink:title="Label : ComprehensiveIncomeNetOfTaxAbstract to label_ComprehensiveIncomeNetOfTaxAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_LeasesAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LeasesAbstract_1" xml:lang="en-US" id="label_LeasesAbstract_1">Leases</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeasesAbstract" xlink:to="label_LeasesAbstract_1" xlink:title="Label : LeasesAbstract to label_LeasesAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivitiesAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInOperatingActivitiesAbstract_1" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivitiesAbstract_1">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInOperatingActivitiesAbstract_1" xlink:title="Label : NetCashProvidedByUsedInOperatingActivitiesAbstract to label_NetCashProvidedByUsedInOperatingActivitiesAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_ShareBasedCompensation_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ShareBasedCompensation_2" xml:lang="en-US" id="label_ShareBasedCompensation_2">Share-based Payment Arrangement, Noncash Expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensation" xlink:to="label_ShareBasedCompensation_2" xlink:title="Label : ShareBasedCompensation to label_ShareBasedCompensation_2" />
    <link:label xlink:type="resource" xlink:label="label_ProvisionForDoubtfulAccounts_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProvisionForDoubtfulAccounts_1" xml:lang="en-US" id="label_ProvisionForDoubtfulAccounts_1">Accounts Receivable, Credit Loss Expense (Reversal)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProvisionForDoubtfulAccounts" xlink:to="label_ProvisionForDoubtfulAccounts_1" xlink:title="Label : ProvisionForDoubtfulAccounts to label_ProvisionForDoubtfulAccounts_1" />
    <link:label xlink:type="resource" xlink:label="label_InventoryWriteDown_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_InventoryWriteDown_2" xml:lang="en-US" id="label_InventoryWriteDown_2">Change of inventory to net realizable value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryWriteDown" xlink:to="label_InventoryWriteDown_2" xlink:title="Label : InventoryWriteDown to label_InventoryWriteDown_2" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInOperatingCapitalAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInOperatingCapitalAbstract_1" xml:lang="en-US" id="label_IncreaseDecreaseInOperatingCapitalAbstract_1">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="label_IncreaseDecreaseInOperatingCapitalAbstract_1" xlink:title="Label : IncreaseDecreaseInOperatingCapitalAbstract to label_IncreaseDecreaseInOperatingCapitalAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_1" xml:lang="en-US" id="label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_1">Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable" xlink:to="label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_1" xlink:title="Label : IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable to label_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable_1" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivitiesAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInInvestingActivitiesAbstract_1" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivitiesAbstract_1">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInInvestingActivitiesAbstract_1" xlink:title="Label : NetCashProvidedByUsedInInvestingActivitiesAbstract to label_NetCashProvidedByUsedInInvestingActivitiesAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_PaymentsToAcquireIntangibleAssets_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentsToAcquireIntangibleAssets_1" xml:lang="en-US" id="label_PaymentsToAcquireIntangibleAssets_1">Payments to Acquire Intangible Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireIntangibleAssets" xlink:to="label_PaymentsToAcquireIntangibleAssets_1" xlink:title="Label : PaymentsToAcquireIntangibleAssets to label_PaymentsToAcquireIntangibleAssets_1" />
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivitiesAbstract_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetCashProvidedByUsedInFinancingActivitiesAbstract_1" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivitiesAbstract_1">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="label_NetCashProvidedByUsedInFinancingActivitiesAbstract_1" xlink:title="Label : NetCashProvidedByUsedInFinancingActivitiesAbstract to label_NetCashProvidedByUsedInFinancingActivitiesAbstract_1" />
    <link:label xlink:type="resource" xlink:label="label_EffectOfExchangeRateOnCashAndCashEquivalents_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EffectOfExchangeRateOnCashAndCashEquivalents_1" xml:lang="en-US" id="label_EffectOfExchangeRateOnCashAndCashEquivalents_1">Effect of Exchange Rate on Cash and Cash Equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EffectOfExchangeRateOnCashAndCashEquivalents" xlink:to="label_EffectOfExchangeRateOnCashAndCashEquivalents_1" xlink:title="Label : EffectOfExchangeRateOnCashAndCashEquivalents to label_EffectOfExchangeRateOnCashAndCashEquivalents_1" />
    <link:label xlink:type="resource" xlink:label="label_IndustrialPropertyMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IndustrialPropertyMember_1" xml:lang="en-US" id="label_IndustrialPropertyMember_1">Facility to support, research and development activity [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IndustrialPropertyMember" xlink:to="label_IndustrialPropertyMember_1" xlink:title="Label : IndustrialPropertyMember to label_IndustrialPropertyMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_OfficeBuildingMember" xlink:label="OfficeBuildingMember" xlink:title="OfficeBuildingMember" />
    <link:label xlink:type="resource" xlink:label="label_OfficeBuildingMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OfficeBuildingMember" xml:lang="en-US" id="label_OfficeBuildingMember">Facility to support, principal administrative, sales, marketing, customer support, and research and product development activity [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OfficeBuildingMember" xlink:to="label_OfficeBuildingMember" xlink:title="Label : OfficeBuildingMember to label_OfficeBuildingMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_WarehouseMember" xlink:label="WarehouseMember" xlink:title="WarehouseMember" />
    <link:label xlink:type="resource" xlink:label="label_WarehouseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_WarehouseMember" xml:lang="en-US" id="label_WarehouseMember">Warehouse to support, primary inventory fulfillment and repair center [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarehouseMember" xlink:to="label_WarehouseMember" xlink:title="Label : WarehouseMember to label_WarehouseMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:title="OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" />
    <link:label xlink:type="resource" xlink:label="label_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xml:lang="en-US" id="label_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract">Business Description, Basis of Presentation and Significant Accounting Policies</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="label_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:title="Label : OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract to label_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/stpr/2021/stpr-2021.xsd#stpr_FL" xlink:label="FL" xlink:title="FL" />
    <link:label xlink:type="resource" xlink:label="label_FL" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FL" xml:lang="en-US" id="label_FL">Gainesville, Florida [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FL" xlink:to="label_FL" xlink:title="Label : FL to label_FL" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/stpr/2021/stpr-2021.xsd#stpr_UT" xlink:label="UT" xlink:title="UT" />
    <link:label xlink:type="resource" xlink:label="label_UT" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_UT" xml:lang="en-US" id="label_UT">Salt Lake City, Utah [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UT" xlink:to="label_UT" xlink:title="Label : UT to label_UT" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/stpr/2021/stpr-2021.xsd#stpr_TX" xlink:label="TX" xlink:title="TX" />
    <link:label xlink:type="resource" xlink:label="label_TX" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_TX" xml:lang="en-US" id="label_TX">Austin, Texas [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TX" xlink:to="label_TX" xlink:title="Label : TX to label_TX" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_ES" xlink:label="ES" xlink:title="ES" />
    <link:label xlink:type="resource" xlink:label="label_ES" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ES" xml:lang="en-US" id="label_ES">Zaragoza, Spain [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ES" xlink:to="label_ES" xlink:title="Label : ES to label_ES" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_IN" xlink:label="IN" xlink:title="IN" />
    <link:label xlink:type="resource" xlink:label="label_IN" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IN" xml:lang="en-US" id="label_IN">Chennai, India [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IN" xlink:to="label_IN" xlink:title="Label : IN to label_IN" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2021/country-2021.xsd#country_CN" xlink:label="CN" xlink:title="CN" />
    <link:label xlink:type="resource" xlink:label="label_CN" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_CN" xml:lang="en-US" id="label_CN">Shenzhen, China [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CN" xlink:to="label_CN" xlink:title="Label : CN to label_CN" />
    <link:label xlink:type="resource" xlink:label="label_OfficeBuildingMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OfficeBuildingMember_1" xml:lang="en-US" id="label_OfficeBuildingMember_1">Office Building [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OfficeBuildingMember" xlink:to="label_OfficeBuildingMember_1" xlink:title="Label : OfficeBuildingMember to label_OfficeBuildingMember_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerAbstract" xlink:label="RevenueFromContractWithCustomerAbstract" xlink:title="RevenueFromContractWithCustomerAbstract" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RevenueFromContractWithCustomerAbstract" xml:lang="en-US" id="label_RevenueFromContractWithCustomerAbstract">Revenue Information</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerAbstract" xlink:to="label_RevenueFromContractWithCustomerAbstract" xlink:title="Label : RevenueFromContractWithCustomerAbstract to label_RevenueFromContractWithCustomerAbstract" />
    <link:label xlink:type="resource" xlink:label="label_WarehouseMember_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarehouseMember_1" xml:lang="en-US" id="label_WarehouseMember_1">Warehouse [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarehouseMember" xlink:to="label_WarehouseMember_1" xlink:title="Label : WarehouseMember to label_WarehouseMember_1" />
    <link:label xlink:type="resource" xlink:label="label_FL_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FL_1" xml:lang="en-US" id="label_FL_1">FLORIDA</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FL" xlink:to="label_FL_1" xlink:title="Label : FL to label_FL_1" />
    <link:label xlink:type="resource" xlink:label="label_UT_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_UT_1" xml:lang="en-US" id="label_UT_1">UTAH</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UT" xlink:to="label_UT_1" xlink:title="Label : UT to label_UT_1" />
    <link:label xlink:type="resource" xlink:label="label_RevenueFromContractWithCustomerTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_RevenueFromContractWithCustomerTextBlock_1" xml:lang="en-US" id="label_RevenueFromContractWithCustomerTextBlock_1">Revenue Information</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerTextBlock" xlink:to="label_RevenueFromContractWithCustomerTextBlock_1" xlink:title="Label : RevenueFromContractWithCustomerTextBlock to label_RevenueFromContractWithCustomerTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_TX_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_TX_1" xml:lang="en-US" id="label_TX_1">TEXAS</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TX" xlink:to="label_TX_1" xlink:title="Label : TX to label_TX_1" />
    <link:label xlink:type="resource" xlink:label="label_ES_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ES_1" xml:lang="en-US" id="label_ES_1">SPAIN</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ES" xlink:to="label_ES_1" xlink:title="Label : ES to label_ES_1" />
    <link:label xlink:type="resource" xlink:label="label_IN_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IN_1" xml:lang="en-US" id="label_IN_1">INDIA</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IN" xlink:to="label_IN_1" xlink:title="Label : IN to label_IN_1" />
    <link:label xlink:type="resource" xlink:label="label_CN_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CN_1" xml:lang="en-US" id="label_CN_1">CHINA</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CN" xlink:to="label_CN_1" xlink:title="Label : CN to label_CN_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="EarningsPerShareAbstract" xlink:title="EarningsPerShareAbstract" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EarningsPerShareAbstract" xml:lang="en-US" id="label_EarningsPerShareAbstract">Earnings (Loss) Per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareAbstract" xlink:to="label_EarningsPerShareAbstract" xlink:title="Label : EarningsPerShareAbstract to label_EarningsPerShareAbstract" />
    <link:label xlink:type="resource" xlink:label="label_EarningsPerShareTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EarningsPerShareTextBlock_1" xml:lang="en-US" id="label_EarningsPerShareTextBlock_1">Earnings (Loss) Per Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareTextBlock" xlink:to="label_EarningsPerShareTextBlock_1" xlink:title="Label : EarningsPerShareTextBlock to label_EarningsPerShareTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeasedAssetsLineItems_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeasedAssetsLineItems_1" xml:lang="en-US" id="label_OperatingLeasedAssetsLineItems_1">Operating Leased Assets [Line Items]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract" xlink:label="InvestmentsDebtAndEquitySecuritiesAbstract" xlink:title="InvestmentsDebtAndEquitySecuritiesAbstract" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="IncomeTaxDisclosureAbstract" xlink:title="IncomeTaxDisclosureAbstract" />
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    <link:label xlink:type="resource" xlink:label="label_NewAccountingPronouncementsPolicyPolicyTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NewAccountingPronouncementsPolicyPolicyTextBlock_1" xml:lang="en-US" id="label_NewAccountingPronouncementsPolicyPolicyTextBlock_1">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashFlowOperatingActivitiesLesseeAbstract" xlink:label="CashFlowOperatingActivitiesLesseeAbstract" xlink:title="CashFlowOperatingActivitiesLesseeAbstract" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseCostAbstract" xlink:label="LeaseCostAbstract" xlink:title="LeaseCostAbstract" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MarketableSecuritiesTable" xlink:label="MarketableSecuritiesTable" xlink:title="MarketableSecuritiesTable" />
    <link:label xlink:type="resource" xlink:label="label_MarketableSecuritiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MarketableSecuritiesTable" xml:lang="en-US" id="label_MarketableSecuritiesTable">Marketable Securities [Table]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MarketableSecuritiesLineItems" xlink:label="MarketableSecuritiesLineItems" xlink:title="MarketableSecuritiesLineItems" />
    <link:label xlink:type="resource" xlink:label="label_MarketableSecuritiesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MarketableSecuritiesLineItems" xml:lang="en-US" id="label_MarketableSecuritiesLineItems">Marketable Securities [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MarketableSecuritiesLineItems" xlink:to="label_MarketableSecuritiesLineItems" xlink:title="Label : MarketableSecuritiesLineItems to label_MarketableSecuritiesLineItems" />
    <link:label xlink:type="resource" xlink:label="label_OperatingLeaseLiability_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingLeaseLiability_3" xml:lang="en-US" id="label_OperatingLeaseLiability_3">Operating Lease, Liability</link:label>
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    <link:label xlink:type="resource" xlink:label="label_LitigationForIntellectualPropertyInfringementMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LitigationForIntellectualPropertyInfringementMember_2" xml:lang="en-US" id="label_LitigationForIntellectualPropertyInfringementMember_2">Litigation for Intellectual Property Infringement [Member]</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfProductInformationTable" xlink:label="ScheduleOfProductInformationTable" xlink:title="ScheduleOfProductInformationTable" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfProductInformationTable" xlink:to="label_ScheduleOfProductInformationTable" xlink:title="Label : ScheduleOfProductInformationTable to label_ScheduleOfProductInformationTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProductInformationLineItems" xlink:label="ProductInformationLineItems" xlink:title="ProductInformationLineItems" />
    <link:label xlink:type="resource" xlink:label="label_ProductInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProductInformationLineItems" xml:lang="en-US" id="label_ProductInformationLineItems">Product Information [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductInformationLineItems" xlink:to="label_ProductInformationLineItems" xlink:title="Label : ProductInformationLineItems to label_ProductInformationLineItems" />
    <link:label xlink:type="resource" xlink:label="label_AudioConferencingMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AudioConferencingMember_2" xml:lang="en-US" id="label_AudioConferencingMember_2">Audio conferencing [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AudioConferencingMember" xlink:to="label_AudioConferencingMember_2" xlink:title="Label : AudioConferencingMember to label_AudioConferencingMember_2" />
    <link:label xlink:type="resource" xlink:label="label_MicrophonesMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_MicrophonesMember_2" xml:lang="en-US" id="label_MicrophonesMember_2">Microphones [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MicrophonesMember" xlink:to="label_MicrophonesMember_2" xlink:title="Label : MicrophonesMember to label_MicrophonesMember_2" />
    <link:label xlink:type="resource" xlink:label="label_VideoProductsMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_VideoProductsMember_2" xml:lang="en-US" id="label_VideoProductsMember_2">Video products [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VideoProductsMember" xlink:to="label_VideoProductsMember_2" xlink:title="Label : VideoProductsMember to label_VideoProductsMember_2" />
    <link:label xlink:type="resource" xlink:label="label_AmericasMember_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AmericasMember_1" xml:lang="en-US" id="label_AmericasMember_1">North and South America [Member]</link:label>
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    <link:label xlink:type="resource" xlink:label="label_AsiaMiddleEastAndAustraliaMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AsiaMiddleEastAndAustraliaMember_2" xml:lang="en-US" id="label_AsiaMiddleEastAndAustraliaMember_2">Asia (including Middle East) and Australia [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AsiaMiddleEastAndAustraliaMember" xlink:to="label_AsiaMiddleEastAndAustraliaMember_2" xlink:title="Label : AsiaMiddleEastAndAustraliaMember to label_AsiaMiddleEastAndAustraliaMember_2" />
    <link:label xlink:type="resource" xlink:label="label_EuropeAndAfricaMember_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_EuropeAndAfricaMember_2" xml:lang="en-US" id="label_EuropeAndAfricaMember_2">Europe and Africa [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EuropeAndAfricaMember" xlink:to="label_EuropeAndAfricaMember_2" xlink:title="Label : EuropeAndAfricaMember to label_EuropeAndAfricaMember_2" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsMember" xlink:to="label_RetainedEarningsMember_2" xlink:title="Label : RetainedEarningsMember to label_RetainedEarningsMember_2" />
    <link:label xlink:type="resource" xlink:label="label_ProductInformationLineItems_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProductInformationLineItems_1" xml:lang="en-US" id="label_ProductInformationLineItems_1">Revenue [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductInformationLineItems" xlink:to="label_ProductInformationLineItems_1" xlink:title="Label : ProductInformationLineItems to label_ProductInformationLineItems_1" />
    <link:label xlink:type="resource" xlink:label="label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_1" xml:lang="en-US" id="label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_1">Stock Issued During Period, Value, Employee Stock Purchase Plan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueEmployeeStockPurchasePlan" xlink:to="label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_1" xlink:title="Label : StockIssuedDuringPeriodValueEmployeeStockPurchasePlan to label_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="LossContingenciesTable" xlink:title="LossContingenciesTable" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingenciesTable" xlink:to="label_LossContingenciesTable" xlink:title="Label : LossContingenciesTable to label_LossContingenciesTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="LossContingenciesLineItems" xlink:title="LossContingenciesLineItems" />
    <link:label xlink:type="resource" xlink:label="label_LossContingenciesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LossContingenciesLineItems" xml:lang="en-US" id="label_LossContingenciesLineItems">Loss Contingencies [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingenciesLineItems" xlink:to="label_LossContingenciesLineItems" xlink:title="Label : LossContingenciesLineItems to label_LossContingenciesLineItems" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleNotesPayable" xlink:to="label_ConvertibleNotesPayable_1" xlink:title="Label : ConvertibleNotesPayable to label_ConvertibleNotesPayable_1" />
    <link:label xlink:type="resource" xlink:label="label_AvailableForSaleSecuritiesAmortizedCost_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AvailableForSaleSecuritiesAmortizedCost_1" xml:lang="en-US" id="label_AvailableForSaleSecuritiesAmortizedCost_1">Available-for-sale Securities, Amortized Cost Basis</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesAmortizedCost" xlink:to="label_AvailableForSaleSecuritiesAmortizedCost_1" xlink:title="Label : AvailableForSaleSecuritiesAmortizedCost to label_AvailableForSaleSecuritiesAmortizedCost_1" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionRate" xlink:label="RelatedPartyTransactionRate" xlink:title="RelatedPartyTransactionRate" />
    <link:label xlink:type="resource" xlink:label="label_RelatedPartyTransactionRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RelatedPartyTransactionRate" xml:lang="en-US" id="label_RelatedPartyTransactionRate">Related Party Transaction, Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RelatedPartyTransactionRate" xlink:to="label_RelatedPartyTransactionRate" xlink:title="Label : RelatedPartyTransactionRate to label_RelatedPartyTransactionRate" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="DebtInstrumentBasisSpreadOnVariableRate1" xlink:title="DebtInstrumentBasisSpreadOnVariableRate1" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentBasisSpreadOnVariableRate1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentBasisSpreadOnVariableRate1" xml:lang="en-US" id="label_DebtInstrumentBasisSpreadOnVariableRate1">Debt Instrument, Basis Spread on Variable Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentBasisSpreadOnVariableRate1" xlink:to="label_DebtInstrumentBasisSpreadOnVariableRate1" xlink:title="Label : DebtInstrumentBasisSpreadOnVariableRate1 to label_DebtInstrumentBasisSpreadOnVariableRate1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:label="ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:title="ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xml:lang="en-US" id="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight">Class of Warrant or Right, Number of Securities Called by Each Warrant or Right</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:to="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:title="Label : ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight to label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" />
    <link:label xlink:type="resource" xlink:label="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1" xml:lang="en-US" id="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1">Warrants to purchase of common stock, shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight" xlink:to="label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1" xlink:title="Label : ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight to label_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight_1" />
    <link:label xlink:type="resource" xlink:label="label_ProceedsFromIssuanceOfLongTermDebt_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ProceedsFromIssuanceOfLongTermDebt_1" xml:lang="en-US" id="label_ProceedsFromIssuanceOfLongTermDebt_1">Issuance and sale of secured convertible notes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfLongTermDebt" xlink:to="label_ProceedsFromIssuanceOfLongTermDebt_1" xlink:title="Label : ProceedsFromIssuanceOfLongTermDebt to label_ProceedsFromIssuanceOfLongTermDebt_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="DebtInstrumentLineItems" xlink:title="DebtInstrumentLineItems" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentLineItems" xml:lang="en-US" id="label_DebtInstrumentLineItems">Debt Instrument [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentLineItems" xlink:to="label_DebtInstrumentLineItems" xlink:title="Label : DebtInstrumentLineItems to label_DebtInstrumentLineItems" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BeneficialOwnerMember" xlink:label="BeneficialOwnerMember" xlink:title="BeneficialOwnerMember" />
    <link:label xlink:type="resource" xlink:label="label_BeneficialOwnerMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BeneficialOwnerMember" xml:lang="en-US" id="label_BeneficialOwnerMember">Beneficial Owner [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BeneficialOwnerMember" xlink:to="label_BeneficialOwnerMember" xlink:title="Label : BeneficialOwnerMember to label_BeneficialOwnerMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="RelatedPartyDomain" xlink:title="RelatedPartyDomain" />
    <link:label xlink:type="resource" xlink:label="label_RelatedPartyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RelatedPartyDomain" xml:lang="en-US" id="label_RelatedPartyDomain">Related Party [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RelatedPartyDomain" xlink:to="label_RelatedPartyDomain" xlink:title="Label : RelatedPartyDomain to label_RelatedPartyDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="RelatedPartyTransactionsByRelatedPartyAxis" />
    <link:label xlink:type="resource" xlink:label="label_RelatedPartyTransactionsByRelatedPartyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RelatedPartyTransactionsByRelatedPartyAxis" xml:lang="en-US" id="label_RelatedPartyTransactionsByRelatedPartyAxis">Related Party [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="label_RelatedPartyTransactionsByRelatedPartyAxis" xlink:title="Label : RelatedPartyTransactionsByRelatedPartyAxis to label_RelatedPartyTransactionsByRelatedPartyAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockMember" xlink:label="CommonStockMember" xlink:title="CommonStockMember" />
    <link:label xlink:type="resource" xlink:label="label_CommonStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommonStockMember" xml:lang="en-US" id="label_CommonStockMember">Common Stock [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockMember" xlink:to="label_CommonStockMember" xlink:title="Label : CommonStockMember to label_CommonStockMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WarrantMember" xlink:label="WarrantMember" xlink:title="WarrantMember" />
    <link:label xlink:type="resource" xlink:label="label_WarrantMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_WarrantMember" xml:lang="en-US" id="label_WarrantMember">Warrant [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WarrantMember" xlink:to="label_WarrantMember" xlink:title="Label : WarrantMember to label_WarrantMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertibleDebtMember" xlink:label="ConvertibleDebtMember" xlink:title="ConvertibleDebtMember" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleDebtMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleDebtMember" xml:lang="en-US" id="label_ConvertibleDebtMember">Convertible Debt [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleDebtMember" xlink:to="label_ConvertibleDebtMember" xlink:title="Label : ConvertibleDebtMember to label_ConvertibleDebtMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertiblesAndBondsWithWarrantsAttachedMember" xlink:label="ConvertiblesAndBondsWithWarrantsAttachedMember" xlink:title="ConvertiblesAndBondsWithWarrantsAttachedMember" />
    <link:label xlink:type="resource" xlink:label="label_ConvertiblesAndBondsWithWarrantsAttachedMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertiblesAndBondsWithWarrantsAttachedMember" xml:lang="en-US" id="label_ConvertiblesAndBondsWithWarrantsAttachedMember">Convertibles and Bonds with Warrants Attached [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertiblesAndBondsWithWarrantsAttachedMember" xlink:to="label_ConvertiblesAndBondsWithWarrantsAttachedMember" xlink:title="Label : ConvertiblesAndBondsWithWarrantsAttachedMember to label_ConvertiblesAndBondsWithWarrantsAttachedMember" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="LongtermDebtTypeDomain" xlink:title="LongtermDebtTypeDomain" />
    <link:label xlink:type="resource" xlink:label="label_LongtermDebtTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongtermDebtTypeDomain" xml:lang="en-US" id="label_LongtermDebtTypeDomain">Long-term Debt, Type [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongtermDebtTypeDomain" xlink:to="label_LongtermDebtTypeDomain" xlink:title="Label : LongtermDebtTypeDomain to label_LongtermDebtTypeDomain" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="LongtermDebtTypeAxis" xlink:title="LongtermDebtTypeAxis" />
    <link:label xlink:type="resource" xlink:label="label_LongtermDebtTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongtermDebtTypeAxis" xml:lang="en-US" id="label_LongtermDebtTypeAxis">Long-term Debt, Type [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongtermDebtTypeAxis" xlink:to="label_LongtermDebtTypeAxis" xlink:title="Label : LongtermDebtTypeAxis to label_LongtermDebtTypeAxis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="DebtInstrumentTable" xlink:title="DebtInstrumentTable" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentTable" xml:lang="en-US" id="label_DebtInstrumentTable">Schedule of Long-term Debt Instruments [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentTable" xlink:to="label_DebtInstrumentTable" xlink:title="Label : DebtInstrumentTable to label_DebtInstrumentTable" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:label="ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:title="ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xml:lang="en-US" id="label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock">Schedule of maturities of principal amount contained in the Notes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:to="label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:title="Label : ScheduleOfMaturitiesOfLongTermDebtTableTextBlock to label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertibleDebtTableTextBlock" xlink:label="ConvertibleDebtTableTextBlock" xlink:title="ConvertibleDebtTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleDebtTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ConvertibleDebtTableTextBlock" xml:lang="en-US" id="label_ConvertibleDebtTableTextBlock">Schedule of carrying value of Notes and Warrants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleDebtTableTextBlock" xlink:to="label_ConvertibleDebtTableTextBlock" xlink:title="Label : ConvertibleDebtTableTextBlock to label_ConvertibleDebtTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_1" xml:lang="en-US" id="label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_1">Schedule of Maturities of Long-term Debt [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:to="label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_1" xlink:title="Label : ScheduleOfMaturitiesOfLongTermDebtTableTextBlock to label_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="clro-20210630.xsd#clro_ScheduleOfWarrantsValuationAssumptionsTableTextBlock" xlink:label="ScheduleOfWarrantsValuationAssumptionsTableTextBlock" xlink:title="ScheduleOfWarrantsValuationAssumptionsTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfWarrantsValuationAssumptionsTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_ScheduleOfWarrantsValuationAssumptionsTableTextBlock" xml:lang="en-US" id="label_ScheduleOfWarrantsValuationAssumptionsTableTextBlock">Schedule of Warrants, Valuation assumptions, Black-Scholes method</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfWarrantsValuationAssumptionsTableTextBlock" xlink:to="label_ScheduleOfWarrantsValuationAssumptionsTableTextBlock" xlink:title="Label : ScheduleOfWarrantsValuationAssumptionsTableTextBlock to label_ScheduleOfWarrantsValuationAssumptionsTableTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_ConvertibleDebtTableTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ConvertibleDebtTableTextBlock_1" xml:lang="en-US" id="label_ConvertibleDebtTableTextBlock_1">Convertible Debt [Table Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleDebtTableTextBlock" xlink:to="label_ConvertibleDebtTableTextBlock_1" xlink:title="Label : ConvertibleDebtTableTextBlock to label_ConvertibleDebtTableTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtTextBlock" xlink:label="LongTermDebtTextBlock" xlink:title="LongTermDebtTextBlock" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LongTermDebtTextBlock" xml:lang="en-US" id="label_LongTermDebtTextBlock">Long-term Debt [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtTextBlock" xlink:to="label_LongTermDebtTextBlock" xlink:title="Label : LongTermDebtTextBlock to label_LongTermDebtTextBlock" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfWarrantsValuationAssumptionsTableTextBlock" xlink:to="label_ScheduleOfWarrantsValuationAssumptionsTableTextBlock_1" xlink:title="Label : ScheduleOfWarrantsValuationAssumptionsTableTextBlock to label_ScheduleOfWarrantsValuationAssumptionsTableTextBlock_1" />
    <link:label xlink:type="resource" xlink:label="label_LongTermDebtTextBlock_1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LongTermDebtTextBlock_1" xml:lang="en-US" id="label_LongTermDebtTextBlock_1">Long-Term Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtTextBlock" xlink:to="label_LongTermDebtTextBlock_1" xlink:title="Label : LongTermDebtTextBlock to label_LongTermDebtTextBlock_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="DebtDisclosureAbstract" xlink:title="DebtDisclosureAbstract" />
    <link:label xlink:type="resource" xlink:label="label_DebtDisclosureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtDisclosureAbstract" xml:lang="en-US" id="label_DebtDisclosureAbstract">Long-Term Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtDisclosureAbstract" xlink:to="label_DebtDisclosureAbstract" xlink:title="Label : DebtDisclosureAbstract to label_DebtDisclosureAbstract" />
    <link:label xlink:type="resource" xlink:label="label_DividendsCommonStockCash_1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="label_DividendsCommonStockCash_1" xml:lang="en-US" id="label_DividendsCommonStockCash_1">Cash dividends, $0.07 per share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DividendsCommonStockCash" xlink:to="label_DividendsCommonStockCash_1" xlink:title="Label : DividendsCommonStockCash to label_DividendsCommonStockCash_1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentDescriptionOfVariableRateBasis" xlink:label="DebtInstrumentDescriptionOfVariableRateBasis" xlink:title="DebtInstrumentDescriptionOfVariableRateBasis" />
    <link:label xlink:type="resource" xlink:label="label_DebtInstrumentDescriptionOfVariableRateBasis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DebtInstrumentDescriptionOfVariableRateBasis" xml:lang="en-US" id="label_DebtInstrumentDescriptionOfVariableRateBasis">Debt Instrument, Description of Variable Rate Basis</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentDescriptionOfVariableRateBasis" xlink:to="label_DebtInstrumentDescriptionOfVariableRateBasis" xlink:title="Label : DebtInstrumentDescriptionOfVariableRateBasis to label_DebtInstrumentDescriptionOfVariableRateBasis" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:label="DebtInstrumentConvertibleConversionPrice1" xlink:title="DebtInstrumentConvertibleConversionPrice1" />
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