Intensly bright, virtually indestructable tactical light, attaches/detaches to almost any gun in seconds. Now featuring the latest C4 LED technology producing 2 to 3 times the output of previous LEDs. a Powered by two 3-volt CR123 lithium batteries with 10-year storage life a C4 LED technology, impervious to shock with a 50,000 hour lifetime a LED Rating: Up to 7,000 candela peak beam intensity and up to 135 lumens measured system output. Deep-dish parabolic reflector produces a concentrated beam with optimum peripheral illumination a Run Time: 2.5 hours regulated run time. Solid-state current regulation for consistent illumination level. a Rail grip clamp system securely attaches/detaches quickly and safely with no tools and without putting your hands in front of muzzle a Mounts directly to handguns with Glock-style rails and to all MIL-STD-1913 (Picatinny) rails. a Includes keys for Glock-style, Picatinny, Beretta 90two, S&W 99 and S&W TSW a Machined aluminum sealed construction with black anodized finsiha Ambidextrous momentary/steady on/off switch a Highly accurate sight repeatability when remounting a Fits existing light bearing holsters 4.18 oz. a Lithium Battery Notice under TECH DOCS a IPX7 rated design; waterproof to 1 meter for 30 minutes. a Dustproof.