The Steamlight® ProTac® HL-X USB is a 1,000-lumen Tactical Light that provides you with a rechargeable, multi-battery system. The Multi-Fuel Flexibility uses both a rechargeable 18650 USB battery with integrated USB charging port or 2 CR123A batteries. This multi-battery versatility means you can always use primary disposable cells to power the light if the rechargeable cell is out of power and a charging source is not available. Ten-Tap® tactical tail cap switch allows selection of one of 3 different momentary or constant on programs. IP68 rated, dust tight and waterproof to 2 meters.