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Options (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018
Share-based Payment Arrangement [Abstract] |  |
Schedule of Estimate Fair Value of Stock Options | The following table summarizes the assumptions used to estimate the fair value of the stock options granted during the nine months ended September 30, 2019.
|  | 2019 |
Expected dividend yield |  |  | 0 | %
Weighted-average expected volatility |  |  | 209-250 | %
Weighted-average risk-free interest rate |  |  | 2.08-2.55 | %
Expected life of options |  |  | 5-7 years |
| The following table summarizes the assumptions used to estimate the fair value of stock options granted during the years ended December 31, 2018 and 2017:
|  | 2018 |  |  | 2017 |
Expected dividend yield |  |  | 0 | % |  |  | 0 | %
Weighted-average expected volatility |  |  | 192-265 | % |  |  | 200 | %
Weighted-average risk-free interest rate |  |  | 2.08-2.73 | % |  |  | 1.92 | %
Expected life of warrants |  |  | 4-5 years |  |  |  | 4.74 -7.50 years |
Schedule of Stock Option Activity | The following table represents stock option activity for the nine-month period ended September 30, 2019:
|  | Number Outstanding |  |  | Weighted Average Exercise Price |  |  | Contractual Life in Years |  |  | Intrinsic Value |
Options Outstanding as of December 31, 2018 |  |  | 1,732,846 |  |  | $ | 1.19 |  |  |  | 6.98 |  |  | $ | - |
Options Exercisable as of December 31, 2018 |  |  | 1,107,259 |  |  | $ | 0.96 |  |  |  | 5.91 |  |  |  |  |
Options granted |  |  | 505,000 |  |  | $ | 0.43 |  |  |  | - |  |  |  | - |
Options forfeited |  |  | 25,800 |  |  | $ | 0.92 |  |  |  | - |  |  |  | - |
Options expired |  |  | 35,700 |  |  | $ | 0.60 |  |  |  | - |  |  |  | - |
Options Outstanding as of September 30, 2019 |  |  | 2,176,346 |  |  | $ | 0.73 |  |  |  | 7.01 |  |  | $ | 1,303,547 |
Options Exercisable as of September 30, 2019 |  |  | 1,204,521 |  |  | $ | 0.89 |  |  |  | 5.69 |  |  | $ | 537,356 |
| The following table represents stock option activity for the two years ended December 31, 2018:
|  | Number Outstanding |  |  | Weighted Average Exercise Price |  |  | Contractual Life in Years |  |  | Intrinsic Value |
Options Outstanding as of December 31, 2016 |  |  | 1,044,500 |  |  | $ | 0.92 |  |  |  | 3.38 |  |  | $ | - |
Options Exercisable as of December 31, 2016 |  |  | 584,000 |  |  | $ | 1.05 |  |  |  | 3.02 |  |  |  |  |
Options granted |  |  | 263,846 |  |  |  | 0.64 |  |  |  | 9.05 |  |  |  | - |
Options forfeited |  |  | (35,000 | ) |  |  | 1.02 |  |  |  | 8.25 |  |  |  | - |
Options expired |  |  | (75,000 | ) |  |  | 1.13 |  |  |  | 4.54 |  |  |  | - |
Options Outstanding as of December 31, 2017 |  |  | 1,197,846 |  |  | $ | 0.97 |  |  |  | 6.96 |  |  | $ | - |
Options Exercisable as of December 31, 2017 |  |  | 781,300 |  |  | $ | 1.02 |  |  |  | 6.30 |  |  | $ | - |
Options granted |  |  | 560,400 |  |  |  | 0.50 |  |  |  | 9.26 |  |  |  |  |
Options forfeited |  |  | (25,400 | ) |  |  | 0.46 |  |  |  | 9.06 |  |  |  |  |
Options expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Options Outstanding as of December 31, 2018 |  |  | 1,732,846 |  |  | $ | 1.19 |  |  |  | 6.98 |  |  | $ | - |
Options Exercisable as of December 31, 2018 |  |  | 1,107,259 |  |  | $ | 0.96 |  |  |  | 5.91 |  |  | $ | - |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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