Especially designed for camping, cycling, outdoor adventure and self-defense. One side button control design makes it easy to use outdoors. 4 brightness levels and other modes operated by side switch. Max output 510 lumen, max beam distance 138 meters. Max intensity 4800CD. Built-in efficient power management circuit, max runtime 150 hours. Battery reverse polarity protection design. Waterproof - IPX8. Impact resistance 1.5 meters. Inverted tail stand. ANSI chart can be found in the images section