The Streamlight ProTac 2L-X USB is a high-performance 500-lumen everyday carry (EDC) tactical flashlight designed for extreme durability. This versatile dual-fuel system comes as a complete rechargeable kit, including a proprietary SL-B26 protected Li-Ion USB battery and charging cord, while maintaining compatibility with two CR123A disposable batteries. Constructed from Type II Military Spec anodized aluminum with a glass lens, the 5.14-inch unit is waterproof and built to resist heavy abrasion. It features a tactical tail cap switch and three user-selectable programs to prioritize specific lighting modes. Weighing only 3.90 oz, it includes a removable pocket clip and a nylon holster, making it an ideal choice for professional or personal security use.