... focus from 10mm to 500mm 3.20X-200X 200X USB Digital MicroscopeApplication :Industrial Inspection Computer Parts inspection Telecom module inspection Scientific ... *480,480*320,320*240Frame Rate30 f/s Under 600 Lux Brightness ( 1.3M )Brightness ControlManual adjustment , Auto W/B by ... ,Metal Fix Stand, color box, simple user manual 200X USB Digital Microscope