Jedel young energy 5000mah backup power supply is mainly designed for portable digital devices, such as mobile phone, Tablet PC, MP3, MP4 and game player etc. This mobile power bank has high capacity, so it can provide enough power for your phone or other devices. LED digital display makes you easily to see how much power your device has and whether the device needs to be charged. Meanwhile you can push the button to show the rest power. Built-in rechargeable Li-Polymer battery, ultra thin and easy to carry. It is a great accompany for you when you travel or have an outdoor gathering.