The SureFire Minimus Variable-Output LED Headlamp offers 13 preset outputs ranging from 1 to 300 lumens to provide the right amount of light for any situation. Features: High-performance LED with faceted MaxVision(TM) reflector produces a wide, smooth beam optimized to your field of vision. Push button On/Off switch and 13 position variable-light output dial permits one-handed adjustment from 5 to 300* lumens. Custom-made headband utilizes fine mesh material built for comfort, durability, and a secure fit, with or without a helmet. Breathe-O-Prene(R) pad fits snugly and comfortably against the forehead while wicking away moisture. The pad can be removed for washing or replacement. Runs on 1 x 123A battery (included).