This intensely bright, virtually indestructible rail-mounted tactical light with red laser attaches to almost any gun in seconds. Features: Powered by (2) 3 V CR123 lithium batteries with 10 years storage life White LED technology impervious to shock with a 50000 hr lifetime Rail grip clamp system securely attaches/detaches quickly and safely with no tools and without putting your hands in front of muzzle Fast, adjustable, secure side mounting to 1913 and Glock style rails IPX4 rated for water resistance Highly accurate sight repeatability when remounting Fits existing light bearing holsters Includes rail locating keys for Glock-style, Picatinny, Beretta 90two, S&W 99, S&W TSW and Sig P320 rails Lithium battery notice under documentation Assembled in USA High impact, chemically resistant engineering polymer laser housing