【Compatible with Garmin/Wahoo Cycling Computers】FR300 is compatible with Garmin cycling computers.To be compatible with Wahoo cycling computers, you need to replace the original insert and mounting tab of FR300 with Adapter compatible with Wahoo(included).NOT compatible with Wahoo Element Bolt original aero out front mount.

【6 Modes& Side Visibility】3 constant modes and 3 flashing modes. It gives out 300 lumens in the warning flash mode.Mode memory function to remember the last used mode. The wide-angle lens, increase your side visibility when riding through the crossroad.

【Auto on/off Mode】FR300 is designed for riding safety, which can greatly increase the possibility of being noticed by passers-by and vehicles around. In order to save power, it also has an auto on/off function. If you are still for 2 minutes, the light will turn off and the vibration will turn on again. No worry about forgetting to turn off the light.

【USB-C Charging and Discharging Port】Charge the light easily or use it as a backup power bank to charge your Cycling computer. In standby mode, click the button to check the battery level (green: 40%-100% red: 5%-40% red flashing: 0-5%) Note: DO NOT charge or discharge the light when it rains. DO NOT use FR300 to charge mobile phones or other devices, otherwise it may damage the light and invalidate the warranty.

【IPX 6 Water-Resistance Design】The light is usable when riding in the rain(Make sure the cap of the charging port is securely mounted after charging).It adopts an aluminum alloy base like cycling computers to withstand greater strength.

【Tether & 2 charging cables included】Use the tether(already installed)to secure the light or computer for gravel or unpaved road riding.It comes with USB-C cable and USB-C to micro USB cable included.FR300 has a 2 year warranty, if you have any questions during use, please feel free to consult.