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Inventories
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following:

December 31,
 20202019
Purchased components$716,848 $720,209 
Finished goods334,434 443,505 
 $1,051,282 $1,163,714 
The Company recorded inventory charges of zero and $2,595,884 for the years ended December 31, 2020 and 2019, respectively, to reflect estimated net realizable value.