The Streamlight ProTac 2.0 Rail is a high-performance weapon-mounted light that delivers 2000 lumens without compromising runtime, designed for demanding tactical applications and mounted directly to MIL-STD-1913 Picatinny rails. Powered by the innovative SL-B50 battery pack, it can be charged inside or outside the light via USB-C, eliminating the need to remove it from your firearm. TEN-TAP programming provides three practical modeshigh with strobe, high only, or low/highallowing rapid adaptation to illumination needs. On high, the beam reaches up to 266 meters while offering a 2.5-hour runtime; in the low/high setting it emits 250 lumens with an impressive 11-hour runtime for extended use, and the strobe extends for 4.5 hours as a signaling or disorientation tool. Built from 6000 series machined aircraft aluminum with a Type II MIL-SPEC anodized finish, the ProTac 2.0 Rail is IP67-rated for dust and water resistance up to 2 meters and tested for 2-meter impact. The compact unit weighs 9.06 ounces and measures 6.30 inches, presenting a robust, reliable illumination solution with a limited lifetime warranty.