Balance Sheets - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 5,145,167	$ 5,226,213
Accounts receivable, net	477,689	334,297
Inventories	979,626	1,051,282
Prepaid expenses and other current assets	362,921	478,074
Total current assets	6,965,403	7,089,866
Fixed assets, net	182,765	183,494
Operating Lease, Right-of-Use Asset	544,420	692,692
Other long-term assets	28,284	28,523
Total assets	7,720,872	7,994,575
Current liabilities:
Accounts payable	381,248	142,316
Accrued expenses and compensation	605,489	998,442
Accrued Sales Return provisions	535,000	545,000
Operating Lease, Liability, Current	566,256	599,632
Total current liabilities	2,087,993	2,285,390
Operating Lease, Liability, Noncurrent	371,827	461,410
Total liabilities	2,459,820	2,746,800
Commitments and contingencies
Stockholders’ equity:
Common Stock, Value, Issued	380	379
Additional paid-in capital	202,202,254	202,129,195
Accumulated deficit	(196,941,583)	(196,881,800)
Total stockholders’ equity	5,261,052	5,247,775
Total liabilities and stockholders’ equity	$ 7,720,872	$ 7,994,575
Common Stock, Par or Stated Value Per Share	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	25,000,000	25,000,000
Common Stock, Shares, Issued	3,796,147	3,793,739
Common Stock, Shares, Outstanding	3,796,147	3,793,739
Convertible preferred stock
Stockholders’ equity:
Preferred stock	$ 1	$ 1
Total stockholders’ equity	1	1
Preferred Non-Convertible Stock
Stockholders’ equity:
Preferred stock	$ 0	$ 0