Balance Sheets - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 6,097,792	$ 4,043,681
Accounts receivable, net	1,588,720	1,049,329
Inventories	1,858,652	2,142,561
Prepaid expenses and other current assets	952,985	1,867,803
Total current assets	10,498,149	9,103,374
Fixed assets, net	431,656	440,842
Other long-term assets	43,158	55,008
Total assets	10,972,963	9,599,224
Current liabilities:
Accounts payable	384,065	733,305
Accrued expenses and compensation	2,361,257	2,362,124
Accrued Sales Return provisions	1,405,117	666,375
Deferred revenue	0	820,031
Total current liabilities	4,150,439	4,581,835
Total liabilities	4,150,439	4,581,835
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.0001 par value; 100,000,000 shares authorized at March 31, 2018 and December 31, 2017; 7,141,940 and 2,706,066 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively	714	271
Additional paid-in capital	196,695,736	196,355,142
Accumulated deficit	(189,873,944)	(191,338,054)
Total stockholders’ equity	6,822,524	5,017,389
Total liabilities and stockholders’ equity	10,972,963	9,599,224
Non-Convertible Preferred Stock
Stockholders’ equity:
Preferred stock	0	0
Convertible preferred stock
Stockholders’ equity:
Preferred stock	$ 18	$ 30