This is the brightest flashlight available because it is the only one in the world that produces 3,350 lumens from a high-intensity discharge (HID) Xenon lamp which allows it to illuminate objects up to a full mile away. Found in stadium lights and aircraft landing lights, HID technology involves passing an electric current through a chamber of ionized gas, resulting in a lamp that produces 10X more light than a regular incandescent lamp. It also produces 1/3 less heat than a halogen flashlight, resulting in a 2,000-hour lamp lifetime. The fully-articulating, deep parabolic reflector produces a narrow, focused beam. The rechargeable lead-acid battery provides up to 1 3/4 hours of operation from a 10-hour charge; plugs into AC to recharge. The flashlight is encased in a high-impact ABS thermoplastic housing that protects the bulb chamber from shock. 15" L x 5" W x 8 3/4" H. (10 lbs.)