Intensely bright, virtually indestructible, strobing rail-mounted tactical light, attaches to almost any gun in seconds. Powered by two 3-volt CR123A lithium batteries with 10-year storage life C4 LED technology, impervious to shock with a 50,000 hour lifetime LED Rating: Up to 12,000 candela peak beam intensity and up to 300 lumens measured system output. Deep-dish parabolic reflector produces a concentrated beam with optimum peripheral illumination Run Time: 2.5 hours regulated run time. Solid-state current regulation for consistent illumination level. Rail grip clamp system securely attaches/detaches quickly and safely with no tools and without putting your hands in front of muzzle Mounts directly to handguns with Glock-style rails and to all MIL-STD-1913 (Picatinny) rails. Includes keys for Glock-style, Picatinny, Beretta 90two, S&W 99 and S&W TSW Machined aluminum sealed construction with black anodized finish Ambidextrous momentary/steady on-off switch, Double tap of momentary paddle within 0.4 seconds activates strobe. (TLR-1s only) Highly accurate sight repeatability when remounting Weight: 4.18 oz. Lithium Battery Notice under TECH DOCS IPX7 rated design; waterproof to 1 meter for 30 minutes Remote switches are available as optional accessories and must be used in conjunction with 69130 remote door switch. All switches and door switch are sold separately. Reference TLR Accessories Brochure in DOCS/INFO tab for more information. Assembled in USA Product Specifications High Lumens: 300 Run Time: 2.50 hours Max Candela: 12,000 Battery Type: CR123A Lithium Battery Quantity: 2 Length: 3.39 inches (8.61 centimeters) Weight: 4.18 ounces (118.50 grams) Colors: Black