General form of registration statement for all companies including face-amount certificate companies

4. Inventory, net (Details)

v3.21.1
4. Inventory, net (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Parts $ 45,509 $ 31,458
Finished goods 67,549 102,889
Total 113,058 134,347
Less inventory reserve (70,562) (71,414)
Inventory, net $ 42,496 $ 62,933