Batteryguard prevents battery drain so you have power when you need it. Retains brightness up to 2x longer, 25% longer battery life. Allows batteries to be stored in lantern for years. LIfetime LEDs never need to be replaced. IPX4 water resistant design. Impact resistant up to 2 meter. Up to 800 lumens of light. Lasts up to 30 hours on high. Uses 3D Batteries (sold separatley). Beam distance up to 12M. 2 modes: High, Low