Powerful, compact lantern. Collapses to half its size for storage. Features BatteryLock system that stops battery drain. When bottom switch is rotated, the batteries are completely disengaged from the lantern, stopping battery drain. Batteries can be stored in the lantern and no toxic corrosion that can damage the lantern will occur. Single button operation. 4 modes: high, medium, low, flash. 625 lumens (high), 200 lumens (medium), 50 lumens (low). 13 hours runtime (high), 40 hours runtime (medium), 400 hours runtime (low). 9 meter beam length (high), 5 meter beam length (medium), 2 meter beam length (low). Requires (4) D batteries, not included.