Consolidated Balance Sheets - USD ($)	May 31, 2025	May 31, 2024
Current Assets:
Cash and cash equivalents	$ 2,399,000	$ 4,170,000
Accounts receivable, net	731,000	947,000
Inventories, net	1,490,000	2,376,000
Prepaid expenses and other	255,000	238,000
Total current assets	4,875,000	7,731,000
Property and equipment, net of accumulated depreciation and amortization	135,000	201,000
Right-of-use assets, net of accumulated amortization of $1,223,000 and $910,000 as of May 31, 2025 and 2024, respectively	429,000	742,000
Investments	165,000	165,000
Intangible assets, net of accumulated amortization of $69,000 and $48,000 as of May 31, 2025 and 2024, respectively	228,000	212,000
Other assets	113,000	203,000
Total Assets	5,945,000	9,254,000
Current Liabilities:
Accounts payable and accrued expenses	672,000	1,138,000
Accrued compensation	655,000	655,000
Advances from customers	55,000	85,000
Lease liabilities, current portion	358,000	326,000
Total current liabilities	1,740,000	2,204,000
Lease liabilities, net of current portion	100,000	459,000
Total Liabilities	1,840,000	2,663,000
Commitments and contingencies (Note 9)
Shareholders’ Equity:
Preferred stock, value
Common stock, $0.08 par value, 3,125,000 shares authorized, 2,546,216 and 2,103,154 issued and outstanding at May 31, 2025 and May 31, 2024, respectively	203,000	168,000
Additional paid-in capital	57,175,000	54,720,000
Accumulated other comprehensive loss	(105,000)	(102,000)
Accumulated deficit	(53,168,000)	(48,195,000)
Total Shareholders’ Equity	4,105,000	6,591,000
Total Liabilities and Shareholders’ Equity	5,945,000	9,254,000
Series A Preferred Stock [Member]
Shareholders’ Equity:
Preferred stock, value