The new TLR-8A includes customized ergonomic switches featuring a low or high position to match your shooting style. It features an ambidextrious 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. Product Details Features white LED and 640-660nm red laser 500 lumens; 140m beam; runs 1.5 hours (light only or light/laser combo) Laser only runs 18 hours Ambidextrous on/off rear switch in two configurations - low or high, to match your shooting style TLR-8 side switch model cannot be retrofitted to the TLR-8A rear switch models Uses one CR123A lithium battery (included) Safe off feature on bezel 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, anodized machined aluminum construction User enabled strobe function 2.58 (6.55 cm); 2.64 oz. (75g) Operating temperature: -20 F to +120 F IPX4 water-resistant Limited lifetime warranty Assembled in USA