The Fenix HL15 is a lightweight headlamp designed for running. It has an output of 200 lumens and can be changed to different light brightness levels to increase run time. The adjustable tilting light ensures perfect beam coverage for the terrain you're covering. It takes two AAA batteries and has a runtime of 4h on high mode, 1hr30min on turbo. Waterproof and dustproof by IP67 standard.