Lightweight, compact, lithium battery powered Gun-Mounted Tactical Light with integrated aiming laser featuring the latest in shock-proof power LED technology. The light provides at least 2.5 hours of continuous run time when in dual mode with the high power visible laser. Rail clamp designed to rapidly attach/detach from side of weapon. Rail Mounted Tactical LED Flashlights still have all of the other excellent features of their older models: Shock-proof, waterproof, dust-proof, and virtually indestructible! Almost indestructible tactical light that can attach/detach to almost any gun in seconds. 3 Watt C4 LED impervious to shock. Will not break or burn out!