Single white LED puts out 120 lumens at maximum setting. Lasts up to two hours at the brightest setting. At the lowest setting, light lasts up to 60 hours. Can be used handheld or hands-free when clipped to a MOLLE vest. High- or low-momentary output, three levels of brightness in constant-on mode, and lock-out mode. Aerospace-grade aluminum construction. Waterproof to 3 ft. Includes: Two CR-123A lithium batteries, user manual, MOLLE retention clip, and two retention system finger loops.