The Exposure Diablo Mk10 Front Light is a high  powered helmet light that uses 3 LEDs to deliver a wide beam to light up the whole trail for your all-mountain adventure. Brightness can be adjusted by a tap to the lights body to keep up with the pace of the trail, no button to find. Exposure Diablo Mk10 Front Light Features 1500 Lumens Fast charging has decreased charge time by up to 30% Includes Helmet mount and handlebar mount Runtime 1 Hr Chargetime 3 Hrs