Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details 2)

v3.21.1
Summary of Significant Accounting Policies (Details 2) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]    
Balance at beginning of period $ 26,933 $ 24,190
Increase in estimated warranty liability 4,650
Warranty expenses incurred (100) (1,907)
Balance at end of period $ 26,833 $ 26,933