The TLR-1 series produce a long-range targeting beam. Long range, lithium battery powered Gun-Mounted Tactical Light featuring the latest in shock-proof power LED technology and providing 2.5 hours of continuous regulated run time. Rail clamp designed to rapidly attach/detach from side of weapon. Model with remote door switch. Tethered battery door and latch mechanism that prevents battery door loss while providing easy battery replacement. Strobe activated on two or more momentary paddle hits for guaranteed entry into strobe mode. Case made using 6000 series machined aircraft aluminum with black anodized finish. Unbreakable polycarbonate lens with scratch-resistant coating, O-ring sealed for water resistance. Features C4LED technology, impervious to shock with a 50,000 hour lifetime. Deep-dish parabolic reflector produces a long range targeting beam with optimum peripheral illumination. Includes keys for Glock-style, Picatinny, Beretta 90two, S and W 99 and S and W TSW. Extensively live-fire tested impact resistant construction. Serialized for positive identification. Intensely bright, virtually indestructible, strobing rail-mounted tactical light, attaches to almost any gun in seconds. The Streamlight 69211 TLR-1s is a lightweight, compact, lithium battery powered gun-mounted tactical light featuring the latest in shock-proof power LED technology and providing at least 2.5-hours of continuous run time. Its rail clamp is designed to rapidly attach/detach from the side of a weapon without the use of tools. A tethered battery door and latch mechanism prevents battery door loss while providing easy battery replacement. When enabled, strobe can be activated on two or more momentary paddle hits. Product Features Manufacturer: Streamlight Item Weight: 7.2 ounces Product Dimensions: 9.9 x 8.1 x 11.25 inches Batteries: 2 CR123A batteries required. (included) Color: Black Style: TLR-1s LED Strobing, Earless Screw Power Source: Battery Type of Bulb: Led Batteries Included: Yes Batteries Required: Yes