Specifications:Color: Black/WhiteEquivalent focal length: 40.6mmExit pupil diameter: 1.45mmOptical distortion: <4.5%Focus distance: 0.3mmNumber of lenses: 4 pieces in 4groupsMagnification: 200xLens aperture: F1.8Product material: ABS, PC +electronic componentsClamping distance: Maximum: 12mm, Minimum: 4mmBattery capacity: 110mahLighting time: 2-4 hours, flashing when the battery is exhaustedCharging indication: The red light will light up when charging, and the green light will light up when fully chargedCharging time: 1 hourPacking size: 9.58.54cmSingle set weight: 70gCharging interface: USB- Type-C interface