Annual report pursuant to Section 13 and 15(d)

5. Inventory, net (Details)

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5. Inventory, net (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Parts inventory, gross $ 31,458 $ 44,974
Finished goods inventory, gross 102,889 78,314
Inventories, gross 134,347 123,288
Inventory reserve (71,414) (53,501)
Inventory, net $ 62,933 $ 69,787