The all new Cateye AMPP500S takes all the best features of it’s predecessor and improves on them and Boosts the power by 100 lumens over the AMPP400S. With a new, more tactile on/off button, allowing for better feeling when using gloves. 5 Lighting modes give you a wide range of power levels from daytime safety to nighttime visibility. All securely held in place with our adjustable FlexTight™ bracket, the AMPP500S features OptiCube™ lens technology, providing a clear beam pattern of bright light with superior side visibility. A double-click of the power button activates high mode and allows you to quickly adapt to changing ride conditions. All this wrapped up into a new tough design & durable casing, the AMPP500S is the perfect light for twilight or early morning rides, urbans/city riding or as a back up safety light for this longer endurance rides. Features Rechargeable headlight (500 lm) Excellent side visibility Large power button for easy operation Turns on High mode with double click of power button Up to 60 hours of run time 5 light modes – High / Middle / Low Daytime Hyperconstant / Flashing Light mode memory Excellent daytime visibility in Daytime HyperConstant mode Weight : 106 g Mount size : 22 - 35 mm Runtimes High mode 500 lumens： 1.5hrs Middle mode 250 lumens： 3hrs Low mode 100 lumens： 8hrs HyperConstant mode 500/100 lumens： 5hrs Flashing mode 100 lumens： 60hrs Charging time (From empty) : 4 hrs