RioRand 1500 Lumen 2x CREE XML U2 LED Cycling Bicycle Bike Light Lamp HeadLight Headlamp Powered by Advanced Technology 1500 Lumen 2x CREE XML U2 LED Cycling Bicycle Bike Light Lamp HeadLight Headlamp Shock waterproof level: IP67 Working temperature: - 40 ~ + 80 lumen: 1500 lumen color temperature: 6000 k,Voltage: 10 to 30 V DC power: 18 w (6 PCS * 3 w LED cree lamp beam)