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