The Streamlight TLR-1S Tactical Illuminator Weaponlight is ideal for use on most firearms with a rail and installs in just a few seconds. This model features Streamlight's C4 LED technology which provides up to 300 lumens of peak output, 25 lumens more than the original TLR-1, and the TLR-1S adds a strobe setting that is great for disorienting assailants. The light will run for up to 2-1/2 hours on 2 CR123A batteries (included). The body of the TLR-1S is constructed of rugged aluminum and is water and shock resistant as well as dustproof. The TLR-1S is covered by Streamlight's Limited lifetime warranty. FeaturesPowered by two 3-volt CR123A lithium batteries with 10-year storage life300 lumens; 2.5 hours regulated run time; 12,000 candela peak beam intensityLED technology impervious to shock with a 50,000 hour lifetimeDeep-dish parabolic reflector produces a concentrated beam with optimum peripheral illuminationSolid-state current regulation for consistent illumination level.Rail gri...