LED : 3 x CREE XML U2 LED ,lifetime 10,000 hours . Max Brightness : 1200 lumens Battery : 3600mAh battery pack (4 x 18650 battery) Runtime : 4.5 hours Reflector : Aluminum alloy reflector Waterproof : IP65 ,can use in rainy weather Application:Climbing, Hiking, Camping, Riding, Hunting, Fishing and so on Packing List: 1 x LED bike light 1 x battery pack 1x battery charger 2 x O rings 1 x colorful box |