Simply by turning it off, the batteries disengage and the Coleman BatteryGuard 50M Flashlight is able to retain its brightness twice as long while the batteries will last 25% longer. BatteryGuard™ technology disengages batteries to preserve battery life and reduce corrosion when light is off and provide Power When You Need It™ Provides up to 25% longer battery life versus a Coleman® light without BatteryGuard™ technology while under normal use BatteryGuard™ technology automatically engages when you turn off the flashlight Comfort-grip design lets you securely and comfortably hold your light Rubber-edged bezel for extra drop protection Strong, lightweight aluminum construction 2 modes: high and low Lumens: 75 (high), 2 (low) Runtime: 3 hours (high), 200 hours (low) Beam distance: 50 m (high), 5 m (low) IPX4 water-resistant design Impact-resistant up to 2 m Powered by 2 AAA batteries (included) Lifetime LEDs never need replacing