4. Inventory, net (Tables)

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Schedule of Inventory

At March 31, 2021 and December 31, 2020, inventory consisted of the following:

	March 31, 2021			December 31, 2020
Parts	$	40,180		$	45,509
Finished goods		51,903			67,549
Total		92,083			113,058
Less inventory reserve		(67,275	)		(70,562	)
Inventory, net	$	24,808		$	42,496