High Performance: Despite its compact size, it delivers a Max 900 lumens with a 150-meter beam distance, allowing you to see the road ahead clearly. Light Windows: Moon-shaped windows on both sides of the light enhance side visibility and improve rider safety. Multi-functional Side Switch: A side switch to access different modes that will be memorized. It also integrates a dual-color battery indicator. For Long-distance Cycling: The built-in 2600 mAh 18650 battery is rechargeable via the USB magnetic charging cable and allows for up to 13.5 hours of runtime.