Its wide beam, enhanced by OptiCubelens technology, provides excellent side visibility and a double click activates the new Ultra-boost mode to illuminate Your Ride Like Never Before. With its durable aluminum body, the AMPP1700 is built to last and accompany your two-wheel adventures for years to come.Specification:  Ultra Boost (1700 lumens)1.25 hrsHigh (1300 lumens)1.75 hrsMiddle (700 lumens)3 hrsLow (400 lumens)5 hrsDaytime HyperConstant (1300/400 lumens)4 hrsFlashing (200 lumens)60 hrsDimension44 x 30 x 117 mmWeight213.5 grams (light unit and battery)Light sourceHigh intensity white LED x1Battery: Li-ion rechargeable battery (3.6v-5000mAh)Recharge timeapprox 4 hrs (USB2.0 recharge)Water resistantIPX4