Ravemen FR500 Headlight Beacon in the Night The FR500 gives you 500 lumens of night light from two LEDs and fits under a Garmin-style bike computer. The built-in 2000m Ah battery can also charge your computer in a pinch. Daytime flash modes keep you visible, and the light turns itself on when it feels you move and off after two minutes of sitting still. Features Two LEDs, up to 500 lumens, a lens projection that lights the road ahead Daytime warning flash modes, a 270-degree viewing angle for side visibility Computer stacking design, fits under Garmin, Wahoo, and compatible computer mounts Auto on/off, turns off after 2 minutes idle and turns on when it detects vibration Power bank function, a 2000m Ah battery that can charge your computer in an emergency Up to 36 hours of runtime, with IPX6 water resistance and USB-C charging SPECIFICATIONSIntended Use Road, Gravel, Commuting Max Output500 lumens Light Source2 x high-efficiency LEDs Modes6Battery2000m Ah / 3. 7VMax Runtime36 hours Charging USB-CWater Resistance IPX6Mount Garmin and Wahoo style (not compatible with the original Wahoo ELEMNT BOLT aero mount)Dimensions82 x 60 x 29mm Weight101g | Ravemen | Fr500 Headlight 500 Lumens