Streamlight TLR-7 HL-X 1913 Sub USB Gun Light - The TLR-7 HL-X Sub USB is a high-output weapon light that delivers both intense brightness and strong beam distance. It can be powered by either Streamlight's SL-B9 USB rechargeable lithium-ion battery pack or a standard CR123A lithium battery. The interchangeable rear paddle switches allow you to customize operation based on your preferred shooting style. Made in the USA ; Custom TIR optic produces a concentrated beam with optimum peripheral illumination; IPX7 waterproof to 1m for 30 minutes; Multi-fuel: Uses one SL-B9 battery pack or one CR123A lithium battery; Rail grip clamp system securely attaches/detaches quickly and safely with no tools and without putting your hands in front of muzzle. Securely fits a broad range of full-sized and compact guns.; "Safe off" feature prevents accidental activation; saves batteries; Durable aluminum construction, interchangeable ambidextrous rear paddle switches easy to swap out with multi-tool;