Features1Preferred Material: aluminium alloy housing to keep it from breaking or bend and can provides a long service time. 2Built-in Lithium Battery: Built-in 1500mAh large capacity lithium battery and you can recharge it in time. 3USB Recharging: This light can be used as a power supplys to recharging your mobilephones and other electronics. 4Easy to Install: All you need to do is attach your bracket to your front bracket and install the light. 53 Lighting Modes: The brightness of the light has three levels to choose from, which you can adjust in time according to your actual needs. 6Portable Size: This light has small size and easy to carry, you can put it into your bags to carry.SpecificationThis bike light is an essential tool when you want to go Cycle at night. With it, you can see the road ahead clearly at night and avert unexpected situations. It is easy to install and remove, if you are interested in this product, come and have a try, it will not let you down. Features:Preferred Material:aluminium alloy housing to keep it from breaking or bend and can provides a long service time. Built-in Lithium Battery:Built-in 1500mAh large capacity lithium battery and you can recharge it in time. USB Recharging:This light can be used as a power supplys to recharging your mobilephones and other electronics. Easy to Install:All you need to do is attach your bracket to your front bracket and install the light. 3 Lighting Modes:The brightness of the light has three levels to choose from, which you can adjust in time according to your actual needs. Portable Size:This light has small size and easy to carry, you can put it into your bags to carry. Specifications:Materal: aluminium alloy Battery: 1 * lithium battery, 1500mAh (included)Brightness: 350 lumens Package size: 150 * 85 * 80mm / 5.9 * 3.3 * 3.1in Package weight: 269g / 9.5ounce Packing list:1 * Light 4 * Bases 2 * Brackets 3 * Wrench 1 * Fixing Rubber Band 1 * Set Screw 1 * USB CablePackage List1 * Light 4 * Bases 2 * Brackets 3 * Wrench 1 * Fixing Rubber Band 1 * Set Screw 1 * USB Cable