Product Features:100% brand new and high qualityEasy to install and remove from your bikeCOB high brightness led headlightRechargeable lithium polymer battery 500mASuit for handlebar from 22mm to 31.8mmBest choice for outdoor cycling Specifications:LED type: COBLuminous flux: 100LMBattery: built-in lithium battery 3.7V 500mAhCharging time: 2 hoursWorking time: 100 ~380 minutesSeat post: Φ 12~31.8mmMaterial: ABSSize: 80*16*22mm/3.15*0.63*0.87 inchColor: Black Package includes:1 x Bike Headlight (with original pack)1 x Bracket Holder1 x USB Charging Cable