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Accrued Expenses (Tables)
 12 Months Ended
Dec. 31, 2019
Payables and Accruals [Abstract]  
Schedule of Accrued Expenses

Accrued expenses consisted of the following at December 31, 2019 and 2018:

 

    December 31, 2019     December 31, 2018  
Accrued warranty expense   $ 17,838     $ 195,135  
Accrued litigation costs     295,000       1,119,445  
Accrued sales commissions     28,480       25,750  
Accrued payroll and related fringes     233,254       186,456  
Accrued insurance     78,579       71,053  
Accrued rent     —       81,160  
Accrued sales returns and allowances     18,258       13,674  
Other     174,472       387,994  
    $ 845,881     $ 2,080,667  
Schedule of Accrued Warranty Expense

Accrued warranty expense was comprised of the following for the years ended December 31, 2019 and 2018:

 

    2019     2018  
Beginning balance   $ 195,135     $ 325,001  
Provision for warranty expense     47,355       181,826  
Charges applied to warranty reserve     (224,651 )     (311,692 )
                 
Ending balance   $ 17,838     $ 195,135