Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash	$ 9,326	$ 3,643
Accounts receivable trade, net	77	25
Prepaid expenses	230	178
Inventory	1,001	945
Deposits	22	28
Total current assets	10,656	4,819
Right to use asset-operating leases	511	665
Property and equipment, net	334	538
Total assets	11,501	6,022
Current liabilities:
Short-term debt	32	98
Accounts payable	333	404
Accrued expenses	578	292
Total current liabilities	943	794
Long-term debt, net		673
Operating lease liability	523	671
Total liabilities	1,466	2,138
Commitments and contingencies (See note 13)
Stockholders’ equity:
Common stock, $0.001 par value, 100,000,000 shares authorized, 12,207,283 and 5,099,512 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively	12	5
Additional paid-in capital	122,531	108,119
Accumulated deficit	(112,508)	(104,240)
Total stockholders’ equity	10,035	3,884
Total liabilities and stockholders’ equity	$ 11,501	$ 6,022