Pocket-sized light uses a high-efficiency, virtually failure-proof LED to deliver either 15 or 500 lumens of focused light * Click-type tail cap switch; high-strength aerospace aluminum body is hard anodized to military specifications for resistance to scratches, abrasion, and corrosion * Precision micro-textured reflector creates smooth, optimized beam; coated, tempered window resists impact and thermal shock, maximizes light transmission * 500-lumen high setting runs for 1.5 hours and 15-lumen low setting for 46 hours; 5.4-inch length, 1.4-inch bezel diameter, and 5.7-ounce weight with batteries * Includes limited lifetime manufacturer"s warranty