The Streamlight TLR-7X is a multi-fuel weapon light powered by either a CR123A (included) or an SL-B9 rechargeable battery (sold separately), delivering 500 lumens and 5,000 candela. It features an integrated rail clamp for rapid attachment and removal without placing hands in front of the muzzle. Versatility is provided through customizable rear paddle switches, momentary/constant operation, and a programmable strobe. Flat Dark Earth Aluminum construction, ambidextrous, OAL 2.58, Width 1.18, Height 1.27, Weight 2.48 oz/2.64 oz, Waterproof, modes Constant / Momentary / Strobe. Includes high and low switches, mounting hardware, and batteries. This compact light uses a Borofloat glass lens to achieve a 140-meter beam range.