It can also be a power bank to charge your bike computer when you need it. With the auto on-off mode, you can use the light conveniently.Make sure you are visible and ride safely with RAVEMEN FR300.Brighter daytime visible warning flashing mode: With the 300 lumens eye-catching warning flashing mode, FR300 will keep you visible in daytime riding; 3 constant modes and 3 flashing modes for various riding conditions.Wide-angle lens with side visibility: Increase your side visibility when riding through a crossroad or junction.Standard Garmin quarter-turn mount: The light can be mounted between the Garmin bike mount and computers; you can also fix the light at the bottom of Garmin Flush out-front mount. Adaptors for Wahoo computers included: For Wahoo computers, replace the top and bottom Garmin adaptors with the Wahoo one. (Note: FR300 DOES NOT work with the original Wahoo Element Bolt aero out-front mount)USB-C Charging & Discharging Port: Charge the light easily or use it as a backup po