The new AMPP400S offers a balance of safety and convenience with its 400 lumen OptiCube™ lens and five light modes. This versatile bike light can be adjusted to fit any bike with its FlexTight™ bracket and the double-click-to-high function allows for quick adjustments to changing ride conditions. The AMPP400S also features a power switch that acts as low battery indicator and a modern USB-C charging port. TECHNOLOGIES DaytimeCan be used in the daytime. All Weather IPX4Can be used in rainy weather. Side VisibilityProvides visibility from the side to increase safety. USB-Type-CReversible USB Type-C connector eliminates the worry about plug orientation. OptiCubeOur proprietary OptiCube™ lens technology maximizes brightness for greater visibility. FlexTightThe FlexTight™ bracket can be quickly and securely fastened to the handlebar without tools. Low Battery IndicatorIndicates a battery level. Dimension：34 x 100 x 37mmWeight：106 grams light unit and batteryLight source：High intensity white LED x1Battery: Li-ion rechargeable battery 3.6v-2200mAhRecharge time：approx 4 hrs 1AWater resistant：IPX4 FEATURES  Rechargeable headlight 400 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 400 lumens： 2hrs Middle mode 200 lumens： 4hrs Low mode 100 lumens： 8hrs HyperConstant mode 400/100 lumens： 6hrs Flashing mode 100 lumens： 60hrs Charging time From empty : 4 hrs