Green C4A(R) LED combined with a deep-dish parabolic reflector produces an intense hot-spot that provides full game identification, preserves night vision, and won't spook game Ambidextrous momentary/steady On-Off switch One handed snap-on/tighten interface keeps hands away from muzzle when attaching/detaching Mounts directly to all MIL-STD-1913 (Picatinny) rails and weapons with Glock-style rails Securely fits broad range of weapons; Includes keys for Glock-style, Picatinny, Beretta 92, S&W 99 and S&W TSW Extensively live-fire tested impact resistant construction Operating temperature: -40AdegF to +120AdegF IPX7 rated design; Mfg: Streamlight SPECS: Case Material: Machined aluminum construction with anodized finish Lens: Unbreakable polycarbonate lens with scratch-resistant coating. O-Ring sealed. Dimensions: 4.83" Length, 1.44" Body Width, 2.20" Head Diameter Weight: 5.3 ounces Light