FR500 - With 500 lumens of bright night illumination and multiple daytime flash modes, the FR500 keeps you visible at all times. Its space-saving design fits under Garmin-style bike computers, while the smart auto on/off function ensures hands-free convenience. Built to handle any ride, t's your ideal front light for safety ridings. Night Illumination: 500-lumen high-brightness lighting, suitable for night riding. Two high-brightness LEDs enable night illumination with a unique lens projection effect. Daytime Warning: Eye-catching warning flashing mode to keep you visible at daytime riding. Integrated Bike Computer Stacking Design: The integrated bike computer stacking design adds a warning light between the mount and the bike computer, saving space while providing illumination. Compatible with mainstream bike computers, supporting all Garmin-style mounting bases. Power Bank Function: 2000mAh large battery, can provide emergency charging for bike computers. Auto On-Off Function: The FR500 turns off automatically after 2 minutes of inactivity and urns on automatically when vibration is detected. Heat Dissipation Design: Aluminium alloy heat dissipation design Long Battery Life: Battery life lasts up to 36 hours Battery Indicator: When the light is off, press the power button to activate the battery indicator and check the battery level. Green: 40%~100%; Red: 5%~40%; Flashing Red: