Pros are thrilled with LED Lenser's H7 headlamp because of its light weight, easy-to-wear feeling and extremely bright output of 155 lumens. Near-to-far focusing options with the Advanced Focus System are possible because of a patented combination of a reflector and lens to create a light system that provides both a focused beam for long-distance needs and a spill beam for up-close reading. This single LED headlamp also features a stageless dimming function and a bezel that swivels so you don't have to. Runs for nearly five hours on high power; puts out 2.7 lumens for 63 hours on low. Takes three AAA batteries (included). Weight: 4.13 oz.