An intensely bright 1800 Lumen 8 degree LED assembly in a Sartek 3-C cell Aluminum Housing, brighter than a 18 watt HID, depth rated to 1000', up to a 100,000+ hour lamp life. Burn time on C cells is 1-2 hours at full output and over 24 hours at reduced output and useable light for 200+ hours. This is the toughest light you'll ever own. This system gives you the choice of using Alkaline, Lithium Ion or NiMH batteries, as your lighting needs change. The body is machined from a solid rod of aluminum. Lifetime warranty against material and workmanship defects.