The StreamlightA(R) TLR-7A(R) X USB combines superior American-made durability with multi-fuel versatility, so it can run on the included SL-B9 rechargeable battery pack, or a common CR123A battery. It attaches to your handgun's underside rail quickly and safely with no tools, and delivers a 500-lumen beam out to 140 meters with optimal peripheral illumination-so you get the whole picture, no blind spots. Interchangeable rear paddle switches can be configured in the high or low position to match your shooting style, and the integrated strobe function can be used to disorient assailants. 500 lumens 140-meter beam Custom optic produces a narrow beam with optimum peripheral illumination Rear switch can be customized to low/high-position to match your shooting style Multi-fuel: accepts either the SL-B9 rechargeable lithium battery pack (included) or a CR123A lithium battery (not included) Momentary-on, constant-on and strobe features Rail clamp system securely attaches/detaches quickly and safely with no tools Aircraft-grade anodized aluminum construction IPX7 waterproof rated Assembled in the USA, and backed by a limited lifetime warranty Order today!