This superbright flashlight produces up to 1700 lumens of light. Operating on 4 C batteries, it can last up to 16 hours of continual light. Use the rotating head to widen the beam for larger area coverage, or tighten to reach objects as far as 1000 feet away. Constructed from durable aircraft grade aluminum alloy and treated to resist rust and corrosion, this is a perfect accessory for camping trips, emergency kits and more.