This is external battery charger with different transfer ports for differen products . When your products  is lack of power, you can just plug this item on--within 3 second, it will show charging state.

System Requirements
* Product Type: External Battery Charger for digital products
* Input: 5.0 V 500 mA.
* Output: 5.0V-5.5V  500 Ma
* Capacity: 3000 mAh
* Dimension: 75 x 63 x 13 mm
* Weight: 130g
* Color: Blue

Product Features
* External backup battery charger for different products.
* Within 3 second after plugged on, the iphone/ipod will show charging state.
* Charged via the computer or AC adapter with the USB cable.
* 3 lights will respectively show the different charging amount of electricity .(30% ,70% , 100%)
* As the "30%-green light" flashes ,that means the charger is powerless ,need charger it in time .
* Powered by USB port, no extetnal power adapter required.
* Portable size, convenient to carry and use.

Note: Do not charge the digital products and the power station at the same time.

Package Includs:
* 1x 3000mAh External Battery Charger
* 1x USB Cable
* 5x Transfer Connector
Packing Size:85x75x40mm
Packing Weight:220g