The Streamlight TLR-7X is a multi-fuel weapon light delivering 500 lumens and 5,000 candela. It is powered by either one included CR123A lithium battery or an SL-B9 rechargeable Li-ion battery pack. The integrated rail clamp allows 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 mode. Black Anodized Aluminum construction, ambidextrous, OAL 2.58, Width 1.18, Height 1.27, Weight 2.48 oz, Waterproof, modes Constant / Momentary / Strobe. Includes high and low switches and mounting hardware. The Borofloat glass lens ensures a clear 140-meter beam range.