Energizer 4000 mAh Power Bank - GreyEnergizer 4000mAh for all daily needs. Perfect for your Cell phone, Smartphone, Tablet, MP3-Player, fitness-tracker, Bluetooth-Speaker, etc. Ultra-slim and compact design make it easy to carry and the smart LED light indicator displays battery level and charging status. Guaranteed protection against overcharge, over-discharge, overvoltage, over-current, overpower, over-temperature, and short-circuit with a soft touch finish surface.Perfect wherever you go: The ENERGIZER power banks were reduced to the minimum size to save weight.Ultra-thin: Only 9mm thick the ENERGIZER power bank fits easily in every trousers- and jacket pocket.Incredibly sturdy: The stylish but none the less sturdy housing survives falls and impacts.Micro USB charging cable incl.: With the included Micro USB charging cable you can recharge your Energizer power bank at every USB port or with your power adapter.