Great for the outdoors, the Led Lenser H3.2 Headlamp - Box produces 120 lumens of light! The light unit, head straps and the battery box have been redesigned with a specially designed Led Lenser formed battery case that utilises foam to conform to the natural curve of the user's head, providing you with a comfortable fit! Galileo swore by the power of lenses, Newton swore by reflectors. Led Lenser have combined the two to create the Advanced Focus System! This technology allows a seamless transition from homogeneous low beam to a sharply focused high beam.