The TLR-1 HP provides 65,000 candela of light for maximum illumination. Its wide beam pattern lights up large areas so you can identify what is nearby. Featuring the latest in shock-proof LED technology and providing 1.75 hours of continuous run time. Features1,000 lumens; 1.75 hour run time; 65,000 candela; 510m beam distancePowered by two (2) 3-volt CR123A lithium batteriesOne handed snap-on & tighten interface keeps hands away from muzzle when attaching/detachingIncludes keys for GLOCK-style, Picatinny, Beretta 90two, S&W 99, S&W TSW and Sig P320 rails6,000 Series machined aircraft aluminum with anodized finishDouble tap of momentary paddle within 0.4 seconds activates strobe. Strobe can be disabledAmbidextrous momentary/steady On-Off switchMounts directly to handguns with Glock-style rails and to all MIL-STD 1913 (Picatinny) railsIPX7-rated design for waterproof operationExtensively live-fire tested impact resistant constructionLength: 3.29 in (8.61 cm); Weight: 4.32 oz (122.5g)