Especially bright steering wheel lamp for off-road use, visible from a distance of up to 1.6 kilometers during the day. Consistent light output of 800 lumens for up to 1.5 hours. Automatic adjustment to ambient light, speed, and route profile to extend battery life. Can be used as a standalone device or paired with compatible Edge bike computers to automatically turn the light on or off, adjust brightness, and more. 5 light modes: Power, Standard, Eco, Night Flash mode, Day Flash mode.