SHANREN Raptor II 2.4GHz Wireless Waterproof 17 Functions Bicycle Computer Cyclometer and 300 Lumens Bike Light in one with Cadence Sensor Speedometer Odometer Calorie Counter ABS Importado 17 function: top/current/average cadence(speed), total/trip distance), lighting, LCD back light, clock, calorie, auto wake-up, Power saving Two in one: digital wireless bicycle computer and LED headlight two in one, which not only simplify your handlebar but also bring you more functions Waterproof IP65 and 2.1-inch LCD display with sustained back light Built in rechargeable Li-ion battery: high capacity 2800Mah brings you at most 215 hours working time (8hrs after bike light runs out of power)