The HP7 should be standard equipment on every duty belt. With 207 lumens of focusable light and 3.5 hours of battery life (on "high" mode) from standard AAA batteries, it will far outshine any other light of it's size. Pure Beam Focusing Optic System with Beam Lock easily locks in the desired beam with a slight twist of the focusing bezel. Fingertip speed focus control. High and Low output modes. 5.5 inch length. Uses four (4) AAA batteries.