The Streamlight TLR-2 HL Rail Mounted Tactical LED Light with Laser is a high-powered tactical light that mounts directly to all handguns with Picatinny or Glock-style rails. Includes Lithium Batteries.C4 LED delivers 800 lumens; 15,000 candela; 245m beam distance TLR-2 HL (with red laser) runs 1.75 hours (Laser/LED simultaneously); 45 hours (Laser only)Windage and elevation adjustment screws mounted in brass bushings for long life and dependable zero retention; highly accurate sight repeatability when remountingOperating temperature: -40 degrees F to +120 degrees F; IPX4 water resistantTethered battery door and latch mechanism prevents battery door loss while providing easy battery replacement3.39" (8.61 cm); 4.78 oz (135.5 grams)Limited lifetime warranty