Product Name: Bicycle Front LightColour: BlackGear position: full brightness (300IM), semi-bright (150IM), low light (50IM), flashingLife time: 3/4/7/6hBattery: Rechargeable polymer lithium batteryCharging method: USB chargingBattery capacity: 1200mAhIs it waterproof: YesWeight: 91g (183g with packaging)Size: 105*33*90mmApplication: bicycle handlebar diameter 20-31mmQuick disassembly and assembly of the lamp holder: The nut of the lamp holder is directly fixed in the lamp holder, don't worry about falling off, the screw adopts a manual knob type, and it can be disassembled directly without borrowing tools, which is convenient and fast.The lamp holder can be quickly disassembled and assembled. It can be inserted directly along the concave guide rail of the lamp holder, and the installation can be completed successfully. When disassembling, pinch the safety buckle on the right side of the lamp holder while pulling the lamp holder forward to remove successfully.