CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 1,655	$ 1,307
Accounts receivable, net	498	335
Prepaid expenses and other current assets	258	377
Inventory, net	753	794
Total current assets	3,164	2,813
Property and equipment, net	404	407
Other noncurrent assets	58	58
Total assets	3,626	3,278
Current liabilities:
Accounts payable	164	215
Accrued expenses	310	278
Current portion of notes payable	57	56
Deferred revenue	12	12
Total current liabilities	543	561
Notes payable, less current portion	191	206
Total liabilities	734	767
Commitments and contingencies (see notes)
Stockholders’ equity:
Preferred stock, $0.001 par value, 10,000,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.001 par value, 100,000,000 shares authorized, 1,775,930 and 1,035,893 shares issued and outstanding as of March 31, 2025 and December 31, 2024, respectively	2	1
Additional paid-in capital	140,652	138,607
Accumulated deficit	(137,762)	(136,097)
Total stockholders’ equity	2,892	2,511
Total liabilities and stockholders’ equity	$ 3,626	$ 3,278