Coleman 160-Lumen BatteryLock Flashlight BatteryLock system stops battery drain to preserve battery life and reduce corrosion Allows flashlight batteries to be stored for years (up to their inherent shelf life) Twist bezel of this Coleman LED flashlight to easily engage and disengage BatteryLock system Beam distance: 100m on high, 40m on low Coleman 160-Lumen LED Flashlight runtime: 2 hours on high, 40 hours on low