Features white LED and 640-660 nm red laser 500 lumens; 141 m beam; runs 1.5 hours (light only or light/laser combo) Laser runs 60 hours Ambidextrous rear paddle switches Uses one (1) CR123A lithium battery (included) Safe-off feature on bezel prevents accidental activation; saves batteries Rail grip clamp securely attaches/detaches without putting your hands in front of the muzzle Durable, anodized machined aluminum construction User-enabled strobe function 2.51 in (6.38 cm); 2.77 oz (78.5 g) IPX4 water-resistant Limited lifetime warranty Assembled in the USA