The Streamlight TLR-1 HP-X Handgun Weapon Light delivers 1000 lumens of versatile illumination with true multi-fuel capability, using either two SL-B9 protected Li-Ion USB-C rechargeable packs or two CR123A lithium batteries, and it features a front-loaded battery compartment for rapid changes without removing the light from the firearm. Customizable rear paddle switches provide ambidextrous momentary and constant-on operation, while a programmable strobe mode adds versatility for dynamic shooting scenarios. The rugged 6000 series machined aircraft aluminum construction with a black anodized finish, plus the rail grip clamp system, allows secure, tool-free attachment and detachment without placing hands near the muzzle. This model includes keys to fit a variety of full-size and compact railed handguns, and is designed for reliable performance in demanding environments with an IPX7 waterproof rating to 1 meter for 30 minutes. Its capable of operating across a wide temperature range depending on battery choice (-4 to +120 F with SL-B9; -40 to +120 F with CR123A), and at a compact 3.70 inches in length with a weight of about 5.25.4 ounces. Assembled in the USA and backed by a limited lifetime warranty, this light is ideal for hunting, home defense, and duty applications where dependable, high-output illumination is essential.