The Streamlight TLR-1 HL provides 1,000 lumen blast of light for maximum illumination while clearing a room or searching an alley. Its wide beam pattern lights up large areas so you can identify who or what is nearby. Lightweight, compact, high lumen lithium battery powered Gun-Mounted Tactical Light featuring the latest in shock-proof high power LED technology and providing 1.5 hours of continuous run time. Tethered battery door and latch mechanism prevents battery door loss while providing easy battery replacement. Rail clamp designed to rapidly attach/detach from side of weapon. When enabled, strobe activated on two or more momentary paddle hits. Mounts directly to handguns with Glock-style rails and to all Picatinny rails; ambidextrous momentary/steady on/off switch and includes keys for Glock-style, Picatinny, Beretta 92, S&W 99 and S&W TSW and Sig P320.