Surefire HS2 Saint Minimus Headlamp - Multiple-Output LED Headlamp - 2011 Model (100/1 Lumens) HS2-A-BK Black Virtually indestructible LED emitter regulated to maximize output and runtime Proprietary refractive optic produces a smooth, wide beam optimized for your field of vision Built-in SOS beacon can run for days on end Variable light-output dial controls levels from 0 to 100 lumens High-strength aerospace aluminum body, Mil-Spec hard-anodized for extreme durability