The new ampp400s offers a balance of safety and convenience with its 400 lumen opticubetrade lens and five light modes. This versatile bike light can be adjusted to fit any bike with its flextighttrade 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 opticubetrade lens technology maximizes brightness for greater visibility. Flextightthe flextighttrade bracket can be quickly and securely fastened to the handlebar without tools. Low battery indicatorindicates a battery level. Dimension6530634 x 100 x 37mmweight65306106 grams light unit and batterylight source65306high intensity white led x1battery li ion rechargeable battery 3.6v 2200mahrecharge time65306approx 4 hrs 1awater resistant65306ipx4