The Sprinter 500 Headlamp from Black Diamond is always practical, whether you're out for a morning jog or running in the dark. When fully turned up, the Sprinter 500 shines with 500 lumens, while at the lowest setting it lasts up to 28 hours. The single front lens has an extremely smooth universal beam that minimizes hot spots and eliminates hard transitions on the trail. The Sprinter 500 is light to operate and quick to dim and adjust. The light, perforated headband is breathable and the top strap can be removed. Reflective logos and the rear flashing light ensure safety on the road.