Specifications:
Device type: external battery pack
Capacity: 4000mAh
Input:5DC/1500mAh
Output:5.2DC/1000mAh 


Features:
*Portable, rechargeable and universal power pack
*Keep talking and keep playing longer
*Strong structure for totally safe use
*Elegant and fashionable design make it looks more attractive
*Package with eight kinds switched connectors, you can power and   recharge your mobile or PDA, iPod/iPhone/iPad, PSP, MP3/MP4 players, digital camera and other mobile devices anywhere
*Flexible recharging of power pack via notebook USB port or wall adapter with USB charging cable

Usages:
*Press the button for three seconds,it will begin to work or shutdown.
*Press the button two times,the pilot lamp at the side of the power supply will light