FR300 Front Light (fits under Garmin style computer)FR300 is a highly visible daytime running headlight to help you ride safely. It gives out 300 lumens in the warning flashing mode and works with Garmin Wahoo Bryton computer mounts to keep your handlebar clean. It can also be a power bank to charge your bike computer when in need. With the auto on off mode, you can use the light conveniently. Make sure you are visible and ride safely with RAVEMEN FR300. A tether is recommended to secure your computer