Etekcity Waterproof 4-Mode 1200 Lumen CREE XML T6 Bulb LED Bicycle/Bike Light Headlight/lamp Headlamp Flashlight Aluminum alloy casing for cycling, climbing, fishing, hunting, camping and other outdoor activities 2 in 1 functions: Bicycle light + Head Light Made of CREE XM-L T6 LED, ultra bright 4 modes: Strong Brightness, Normal Brightness, Weak Brightness and Strobe( press button for 3 seconds) Rechargeable 4400mA battery offers powerful power supply Aluminum alloy casing, waterproof design