Intensely bright, virtually indestructible rail-mounted tactical light which attaches to almost any gun in seconds. Features: Powered by (2) 3 V CR123 lithium batteries with 10 years storage life 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 Ambidextrous momentary/steady on/off switch Highly accurate sight repeatability when remounting Fits existing light bearing holsters Lithium battery notice under documentation IPX7 rated design, waterproof to 1 m for 30 min Assembled in USA