Surefire X300 Turbo Weapon Light generates a tightly focused 66000candela beam pattern. Features intuitive switching allows instant activation without altering grip turbo beam pattern 1.50 hours run time on high aerospace aluminum body is MilSpec hard anodized for scratch and corrosion resistance and sealed to make it weatherproof and IPX waterproof to 1 meter for 30 minutes. The X300TA attachment system permits secure rapid attachment to and easy removal from Universal and Picatinny thumb screw rail mount.