The Minimus is a virtually indestructible headlamp, just like Saint, but Minimus offers a lower profile and less weight. It's powered by one 123A lithium battery that screws right into the housing utilizing Minimus's single-battery cap. It offers a wide yet powerful beam that's optimized to match your field of vision and it's all controlled by a variable light output dial designed for one-handed use, even with fingers that are cold or gloved. Dial Minimus from 0 to 100 lumens, and all points in between, with a simple twist. Cut from hard-anodized aerospace-grade aluminum, Minimus is built to survive and it is ultra lightweight and comfortable to wear due, in part, to its custom-made headband and moisture wicking Breathe-O-Prene® pad. This is the virtually indestructible - yet ultra lightweight - headlamp you'd expect from SureFire. High-performance LED, in concert with proprietary refractive optic, produces a smooth, powerful beam optimized to your field of vision Variable light output dial permits selection of 0 to 100 lumens of output with one hand Hard-anodized aerospace-grade aluminum housing is lightweight yet tough Custom-made headband built for comfort, durability, and to provide a secure fit with or without a helmet. Breathe-O-Prene® pad fits comfortably against forehead while wicking away moisture, and is removable for washing Includes one high-energy 123A batteries with 10-year shelf life Backed by SureFire's No-Hassle Guarantee