SureFire Minimus Tactical Variable-Output LED Headlamp, Tan Virtually indestructible LED emitter regulated to maximize output and runtime Variable-light output dial controls levels from 0 to 100 lumens Proprietary refractive optic produces a smooth, wide beam optimized for your field of view Built-in SOS beacon can run for days on end Light assembly rotates up and down 90 degrees to direct light where needed