A powerful projecting LED beam that focuses simply by rotating the head. Balanced optics for a brilliant adjustable beam. New high performance rebel LED. Multi mode electronic switch goes between 100% power, 25% power, blink mode, or S.O.S. signal mode. Extended battery life. Rugged, machined aluminum construction with knurled design. 6.607" length. Diameter of barrel is .709". Diameter of head is 1". Comes with 2 "AA" batteries and holster.