Streamlight 69424 TLR-7A Flex Rail Mount Weapons Light 500 Lumen Output plus Strobe feature. The new TLR-7A includes customized ergonomic switches featuring a low or high position to match your shooting style. It features an ambidextrous on/off switch and a rail clamp that is designed to rapidly attach/detach from the side of compact and full frame weapons. Its low-profile design prevents snagging and a - safe off - feature prevents accidental activation, saving batteries. FEATURES AND SPECS: --500 lumens; 140m beam; runs 1.5 hours --Custom optic produces a concentrated beam with optimum peripheral illumination --Ambidextrous on/off switch NOTE: TLR-7 side switch model cannot be retrofitted to the TLR-7A rear switch models --Uses one CR123A lithium battery (included) --Safe off feature prevents accidental activation; saves batteries --Rail grip clamp system securely attaches/detaches quickly and safely with no tools and without putting your hands in front of muzzle --Securely fits a broad range of full-sized and compact guns --Durable, black anodized machined aluminum construction --User enabled strobe function --2.58" (6.55 cm); 2.4 oz (68.1g) --IPX7 waterproof to 1m for 30 minutes --Limited lifetime warranty --Assembled in USA