The TLR-1 HPL produces a wide, 775 lumen beam pattern with brighter peripheral illumination and superior down-range performance. C4 LED technology, impervious to shock with a 50,000 hour lifetime. 775 Lumens 438m beam distance 48,000 candela peak beam intensity runs 1.75 hours. Mounts directly to all MIL-STD-1913 (Picatinny) rails and weapons with Glock-style rails. Includes rail locating keys for mounting to a variety of rails and lithium batteries. Available with either standard door switch or remote door switch. Standard Switch: Ambidextrous momentary/steady On-Off. Remote Switch: Momentary/steady On-Off and port plug for remote switch assembly. Tethered battery door and latch mechanism prevents battery door loss while providing easy battery replacement. One handed snap-on and tighten interface keeps hands away from muzzle when attaching/detaching. Extensively live-fire tested impact resistant construction. Deep dish parabolic reflector produces long-range targeting beam with optimum peripheral illumination. Powered by two 3V CR123A lithium batteries (included). Durable anodized aluminum construction. Unbreakable polycarbonate lens with scratch-resistant coating. IPX7 rated design waterproof to 1 meter for 30 minutes. Operating temperature: -40F to +120 Degree Fahrenheit. Serialized for positive identification. Length with standard switch: 4.83-Inch (12.27 cm). Length with remote switch: 5.25-Inch (13.34 cm) 5.3-Pound (150.3 grams) with standard switch and batteries. 5.6-Pound (158.8 grams) with remote switch and batteries. Long Gun Kit available (#69219). Kit includes TLR-1 HPL with thumb screw, safe off door switch, remote pressure switch and mounting clips, and two 3V CR123A lithium batteries. Limited lifetime warranty. Assembled in USA..