This versatile tactical light gives you multiple illumination options. Choose from three intensity levels: momentary, or constant-on and lock-out. Also, choose from three light colors: white, red, and green. Use it as a handheld light or hands-free when attached to a MOLLE vest. Constructed of aerospace-grade aluminum with mil-spec type III hard-coat anodizing and a MOLLE-ready retention clip. Thumb controls on the top cycle through the intensity levels and switch between the momentary and constant-on modes. Maximum white-LED output on highest setting is 120 lumens. Power is supplied by two CR-123A 3-volt lithium batteries (not included). Run time up to two hours on highest setting, up to 60 hours on the lowest setting. Waterproof to a depth of 1 meter. Weight: 5.7 oz. with batteries. Approximate dimensions: 2.4"L x 1.5"W x 3.4"H.