Never mounted on any platform. X multi-fuel rail-mounted light accepts either Streamlight’s SL-B9. USB rechargeable protected lithium-ion battery pack (optional) or a CR123A lithium battery (included). Interchangeable rear paddle switches accommodate your shooting style. Multi-Fuel: Uses (1) Streamlight SL-B9. Protected Li-Ion USB-C rechargeable battery pack. (not included) or (1) CR123A lithium battery. 725 lumens; 9,500 candela; 195m beam; runs 1.5 hours (CR123A), runs 1 hour (SL-B9). Ambidextrous rear paddle switches with HIGH and LOW options. Safe-off feature prevents accidental activation; saves batteries. Rail-grip clamp securely attaches/detaches without putting your hands in front of the muzzle. Durable, anodized machined aluminum construction. Length: 2.58 in (6.55 cm). Weight w/ SL-B9: 2.64 oz (74.8 g); Weight w/ CR123A: 2.48 oz (70.3 g). IPX7 waterproof to 1m for 30 minutes. Available in Black and Flat Dark Earth (FDE) colors. Assembled in the USA.