Lightweight tactical light/laser-sight combo. Long-running, shockproof light projects blinding illumination from a 3-watt Luxeon™ LED. Rugged polymer and aluminum construction. Mounts to Picatinny or side-mounting Glock rail. Waterproof to 39" for one hour. Ambidextrous momentary or constant-on switch. Peak beam intensity of 110 lumens with optimal peripheral illumination. Runs up to 1-1/2 hours in light mode and up to 11 hours in laser-only mode on one 3-volt CR-2 lithium battery (included). Securely fits a range of firearms with included interchangeable keys. Manufacturer’s limited lifetime warranty. Weight: 2.81 oz.