The TLR-7 X features multi-fuel capability powered by either one (1) CR123A or one (1)Streamlight SL-B9 lithium-ion rechargeable battery pack, both delivering 500 lumens and 5,000candela. The integrated rail clamp is designed to rapidly attach/detach from the side of the weapon, providing smooth installation and removal without having to put your hands in front of the muzzle. Customizable rear paddle switches, momentary and constant on operation, and a programmable strobe mode offer additional versatility for many tactical applications.Specifications and Features:Output: 500 LumensBulb Type: LEDOAL: 2.58"Weight: 2.48 ozBattery Size: CR123A/SL-B9Proofs: WaterproofColor: Black AnodizedMaterial: AluminumRechargeable: YesFilter Color: WhiteSwitch Type: Rear Paddle Switch