Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Components - Property and equipment, net (Details)

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Balance Sheet Components - Property and equipment, net (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Balance Sheet Components    
Property and equipment, gross $ 843 $ 829
Less: Accumulated depreciation and amortization (688) (655)
Property and equipment, net 155 174 [1]
Machinery and equipment    
Balance Sheet Components    
Property and equipment, gross 705 691
Leasehold improvements    
Balance Sheet Components    
Property and equipment, gross 127 127
Tooling    
Balance Sheet Components    
Property and equipment, gross $ 11 $ 11
[1] The condensed consolidated balance sheet as of December 31, 2022 was derived from the audited consolidated balance sheet as of that date.