The ProTac 2L-X USB is a 500 lumen EDC tactical lights that can use either a proprietary Streamlight 18650 USB rechargeable Li-Ion battery or Two CR123A disposable batteries. TheProTac 2L-X USB is a complete rechargeable system that comes with a charge cord and an 18650 button top battery that features an integrated micro-USB charge port. The light features a tactical tail cap switch for momentary or constant on operation, three different user selectable programs and a pocket clip for convenience. The aluminum housing with Type II Military Spec anodizing helps make the light extremely durable and abrasion resistant. Packaged with a removable pocket clip and holster.