The lantern uses BatteryGuard technology to preserve battery life for years. A simple slide movement disengages the battery from the electric contacts, ensuring that you only burn energy when you are lighting up your camp.FeaturesA powerful lantern perfect for family camping tripsBatteryGuard technology - Stops battery drain to preserve battery life and reduce corrosionAllows batteries to be stored in headlamp for yearsBattery life: 15 hoursOutput: 200 lumens - Suitable for lighting up your path in the dark when hiking and trail running. This light level can give a range up to 250m with a focused beam and will offer plenty of light in a wide beam as well.Beam distance: Up to 7 mWeight: 209gDimensions: L7.3 x W7.6 x H13.2cm