Specification Charging Dock Input AC100~240V, 50~60Hz Charging Dock Output DC5V, 1A Battery DC 3.7V, 2200mAh Light Intensity 900~1600 W/cm2 Working Time 3s, 5s, 10s, 15s, 20s, 25s, 30s, 35s, 40s Lighting Mode Full power, progressive, pulse Main Unit Dimensions 243×25mm Packing Size 220×170×100mm Weight of main unit 390 g Gross Weight 650 g Quality guarantee 1 years