High for a high-lumen, far-reaching beam: 1,100 lumens; 65,000 candela; 510m beam; runs 1.5 hours. Medium for bright light and longer run time: 350 lumens; 21,000 candela; 290m beam; runs 4.5 hours. Low for a less intense beam and extended run time: 90 lumens; 5,000 candela; 141m beam; runs 16 hours. Strobe for disorienting or signaling: runs 3.25 hours. Custom, engineered optic produces a narrow beam and optimizes peripheral illumination. C4 LED technology, impervious to shock with a 50,000 hour lifetime. Regulated run time provides consistent performance throughout battery life. 5-cell, 6 Volt Ni-MH sub-C battery, rechargeable up to 1000 times. 10 hr. steady charge, 2.5 hr. fast charge options. Durable, anodized aluminum body with non-slip rubberized comfort grip. IPX4 water-resistant; 3 meter impact resistance tested. 11.82 in. (30 cm); 19.9 oz. (564 grams). Serialized for positive identification. Limited lifetime warranty. Assembled in USA.