FEATURES:-Intensely bright virtually indestructible strobing rail-mounted tactical light attaches to almost any gun inseconds-C4 LED technology impervious to shock with a 50 000 hour lifetime-LED Rating: Up to 12 000 candela peak beam intensity & up to 300 lumens measured system output-Deep-dish parabolic reflector produces a concentrated beam with optimum peripheral illumination-Run Time: 2.5 hours regulated run time.-Solid-state current regulation for consistent illumination level