C4® LED technology within a parabolic reflector produces a concentrated beam with optimum peripheral illumination TEN-TAP® Programming: Choice of three operating modes:1.) high/strobe/low (factory default); 2.) high only; 3.) low/high:High for bright light: 275 lumens; 9,500 candela; 195m beam distance; runs 3 hours Low for when less light is needed and for longer run times: 14 lumens; 500 candela; runs 65 hours Strobe for disorienting or signaling: runs 5.5 hoursSolid State power regulation provides maximum light output throughout battery life High-impact, super-tough nylon polymer for exceptional durability and a superior grip texture to provide a comfortable but slip-resistant feel IPX7 waterproof to 1 meter for 30 minutes Powered by two 3V CR123A lithium batteries (included) 5.34 in. (13.56 cm); 4.2 oz (121 grams) with batteries