Compact design in credit card size, leight weight and high perfromance!nPower Bank für Smartphones,Tablets, Mp3 Player, small black housing 4400mAh, output: 5V/1AnnThanks to the new ednet Power Bank 4400 empty batteries of your mobile devices belong to the past. When your battery is empty the powerful rechargeable Li-Ion battery allows you to use your smartphone, tablet, MP3-player etc. quickly again. The LED indicator shows the remaining battery capacity of the power bank. The power bank will be charged via the included USB cable (Micro USB B to USB A) with your PC or notebook, or alternatively via a USB-socket adapter (31803).