Surefire Minimus is a high-efficiency LED headlamp designed to enlighten dark. It produces a powerful and wide white light beam enough for your natural field of view. The LED light is fully adjustable from 0 to 100 lumens via the knurled no-slip right-hand output control knob while a red filter options for low-signature light that also preserves dark-adapted vision. Minimus comes with a highenergy 123A battery with 10-year shelf life. Useful when you’re working alone or on camping.