Lightweight, affordable and easy to use, the Cateye Volt 100 EL 150 RC Front Light outputs up to 100 lumens of light to illuminate the path ahead while keeping you visible to others.The highly visible Cateye Rapid X rear light uses a U.S.B Rechargeable Li-Polymer battery to power an ultra-bright strip LED that can be seen from a wide angle making it a must for late night urban or road rides.Cateye Volt 100:Li-ion rechargeable battery (3.7V-800mAh)Side visibilityUSB rechargeFlextight handlebar bracketModes: High / Low / FlashRuntimes: 230 hrs depending on modeCateye Rapid X:Rechargeable USB battery5 Hour constant run time30 hour flashing run timeTool free seatpost mountLi-Polymer Battery