Garmin's Varia UT800 smart headlight adds versatility to the capabilities of a light. With a max output of 800 lumens and five light settings, the UT800 outperforms many lights. When paired with a compatible Garmin Edge computer, the light automatically adjusts to your speed. Producing brighter light when the speed increases and saving battery when it's time to cruise, the Varia gets the most out of every single charge. Features: High-intensity headlight that's visible in daylight from more than 1 mile (1.6 km) away Automatically adjusts to ambient light conditions, speed and ride profile to extend battery life Works independently or pairs with compatible Edge cycling computers to automatically turn lights on or off, control brightness and more Offers 5 light modes, including high (800 lumens), medium (400 lumens), low (200 lumens), night flash, and day flash 1.5 hours of battery life at steady 800 lumens, 25 hours at flashing daylight mode Urban edition with out-front mount Specifications: Brightness: 800 Lumens Battery Type: Rechargeable (USB 2.0) Run Time: 1.5 - 25 Hours Beam Color: White Color: Black Weight: 130g