Coleman, Battery Guard Black Lantern. Battery Guard technology stops battery drain to preserve battery life and reduce corrosion, Allows batteries to be stored in lantern for years (up to their inherent shelf life) 2 modes: high, low; lasts up to 30 hours on high and uses 3 D batteries (sold separately) Brightness: up to 600 lumens; beam distance: up to 12 meters, IPX4 water-resistant design; impact-resistant up to 2 meters (on dirt)Lifetime LEDS never need replacing; 3-year limited warranty.