Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details)
12 Months Ended
Dec. 31, 2020
Furniture and fixtures  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years
Computer equipment  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years
Tooling  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years
Software  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years
Minimum | Equipment  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years