he TLR-7 X multi-fuel rail-mounted light accepts either Streamlight’s SL-B9 USB rechargeable protected lithium-ion battery pack or a CR123A lithium battery. Interchangeable rear paddle switches accommodate your shooting style. Multi-fuel: Uses one (1) Streamlight SL-B9™ protected Li-Ion USB-C rechargeable battery pack or one (1) CR123A lithium battery. 500 lumens; 5,000 candela; 140m 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. User-enabled strobe function. 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