The Sidewinder Compact II accepts multiple power sources one CR123A lithium battery, one AA lithium battery or one AA alkaline battery to provide ultimate flexibility in the field. The same great features as the original Sidewinder Compact lightweight, multi-directional and multi-functional. The difference It accepts a variety of different battery types to ensure you always have a power source wherever and whenever duty calls. Uses one 3V CR123A lithium battery included . Also accepts 1 AA lithium battery or 1 AA alkaline battery Coyote Brown Four individual light sources C4 LED, white, impervious to shock with 50,000Hr lifetime 5mm Blue LED, 470 nm peak wavelength, impervious to shock with 100,000Hr lifetime 5mm IR LED, 880 nm peak wavelength, impervious to shock with 100,000Hr lifetime 5mm Red LED, 630 nm peak wavelength, impervious to shock with 100,000Hr lifetime Sidewinder Compact II Light Output and Battery Run Time Pull-to-turn rotary selector knob pre Streamlight Sidewinder Compact II w/CR123A Battery SWCompact II Hmt/Cr123A