Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 883,949	$ 4,432,000
Marketable securities		2,771,000
Accounts receivable	8,500	661,352
Notes receivable, net		40,000
Inventory, net	431,470	494,158
Prepaid expenses	945,000	1,197,000
Other current assets	81,000	41,000
Total current assets	2,350,000	9,636,000
Property and equipment, net	122,298	111,843
Other non-current assets	783,000	569,000
Total assets	3,255,000	10,317,000
Current liabilities:
Accounts payable	610,000	418,000
Accrued liabilities	732,000	649,000
Notes payable, net	115,000
Line of credit		5,820,000
Total current liabilities	1,457,000	6,887,000
Long-term liabilities
Notes payable, net	297,000
Other non-current liabilities	305,000	148,000
Total liabilities	2,059,000	7,035,000
Commitments and contingencies
Stockholders' equity:
Preferred stock, 5,000,000 authorized $0.00001 par value, none issued and outstanding as of June 30, 2020 and December 31, 2019
Common stock, 350,000,000 authorized $0.00001 par value, 73,508,069 and 73,125,538 issued and outstanding as of June 30, 2020 and December 31, 2019, respectively	1,000	1,000
Additional paid-in capital	62,746,000	62,459,000
Accumulated deficit	(61,551,000)	(59,178,000)
Total stockholders' equity	1,196,000	3,282,000
Total liabilities and stockholders' equity	$ 3,255,000	$ 10,317,000