This product has the new shape, using the latest imported high-power lamp (about 2000lm) as the light source, highlighting the trend of fashion and technology. High-performance optics: the use of spot acrylic transparent crystal, the light irradiation distance, night sight distance 30-50 meters, and fully protect your safety on the road.Super waterproof, button switch and USB charging interface, covered with expansion rubber, safe driving in rainy days. Click the button switch, multi-function designUSB interface charging, the world's most popular lithium-ion polymer battery (3.7V, 1200mAh), alternative charging and discharging, faster charging speed, longer discharge time, general charging 3-4 hours, charging time is about 3 -7 hours.Quick disassembly lamp holder: the lamp holder nut is directly fixed on the lamp inside, don't worry, manual button screw, without using tools can disassemble directly, convenient for the diameter of the handlebar: 20-31mm.Quick disassembly and assembly of the lamp holder: press directly along the concave guide rail of the lamp holder, it can be installed successfully; when disassembling, pinch the loop on the right of the lamp holder; meanwhile, the lamp holder is pulled forward and can be successfully removed.Specification:Color: Gray + BlackMaterial: Aluminum alloy + ABS plasticSize: 105 x 33 x 90mm / 4.13 x 1.3 x 3.54inBattery: The latest rechargeable Li polymer battery (3.7V, 1200mAh )Charging: Computer or USB interface charging power bank, can also use 4.2V home charging, the maximum does not exceed 4.5VSuitable for: Handlebar diameter: 20-31mmFunction: Click to enter, Press to shift: Highlight to start Highlight weak flashing Close4 modesPower mode (2000lm) - Lighting time (3h)Standard mode (1000lm) - Lighting time (4h)Eco mode ( 500lm) - Lighting time (7h)Flashing mode - Lighting time (6h)Battery indicator:1. When the remaining power is less than 25%, the indicator light is red.2. When the remaining power is more than 25%, the indicator does not appear.3. When it is full, the light is blue.Package Includes:1 x Bike Headlight1 x Taillight1 x USB Charging Cable1 x English Manual1 x BoxOnly the above package, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The allowable measurement error is +/-1-3cm.This product has the new shape, using the latest imported high-power lamp (about 2000lm) as the light source, highlighting the trend of fashion and technology. High-performance optics: the use of spot acrylic transparent crystal, the light irradiation distance, night sight distance 30-50 meters, and fully protect your safety in