Specification:_x000D_Features:_x000D_Aluminum alloy and ABS-plastic combination, strong and waterproof._x000D_Simply switch to ON light and change the brightness modes._x000D_The belt can help to install and remove it easily._x000D_USB rechargeable bike lights for comfortable use._x000D_Very useful for most bicycles._x000D_Specification:_x000D_Material: Aluminum Alloy, Plastic._x000D_Size: 75 x 43 x 25mm_x000D_Built in: 1200mAh Battery_x000D_Lumen: 400lm_x000D_Color: As hte picture show_x000D_Super bright for sightseeing while driving at night._x000D_Intelligent motion sensor. Turn off the light automatically. The darker the environment, the brighter the lights_x000D_Easy to install. No wires distressed USB charging for more comfortable use._x000D_Waterproof for use in all condition of the weather._x000D_Can be used as a mountain bike headlamp, road bike lights, kids bicycle safety light and more._x000D_Function: _x000D_1. Intelligent Shock Detection to Save_x000D_The bike light stops automatically when the bike stops moving after three minutes. Second, automatically sets power through energy-saving mode and bilateral warning lights._x000D_2. Intelligent light detection, automatically turn onoff_x000D_The bicycle lights turn on or off automatically, depending on whether the ambient lighting is sufficient or not.Package List:_x000D_1 x Bike LED Light