The Streamlight TLR-7 X USB is a versatile, compact weapon light featuring multi-fuel technology. It can be powered by either the included SL-B9 USB-C rechargeable battery pack or a standard CR123A lithium battery, both producing 500 lumens. The design includes customizable rear paddle switches to accommodate different shooting styles and a rapid-attach rail clamp that keeps hands away from the muzzle during installation. Black Anodized Aluminum construction, OAL 2.58, Width 1.18, Height 1.27, Weight 2.48 oz, Waterproof, modes Constant On / Momentary / Strobe. It is compatible with a wide range of full-size and compact pistols, including Glock Gen 4/5, Sig Sauer, and Smith & Wesson.