Features:
??? - Unique super thin， fashionable.
??? - To charge the portable battery， simply plug in the USB contactor into the portable battery.
??? - The other end contact to either an USB power adapter or an USB socket of a computer.
??? - To charge the phone， simply slide the phone into the portable battery and slide ON-OFF switch to on.
??? - Indicator shows power status of external battery.
??? - Also can be used as a good case to protect your phone from scratches and other minor damages.
??? - A perfect emergency backup when the internal battery of your device is drained on the go.
??? - Ideal for long distance travel or business trip.
??? - No need to take off the case when connecting the phone to computer.
??? - Note: The headphone hole is only for original Apple headphone.
??? - Cable is not included because you charge the case with your original iPhone 5 cable

Specifications:
Capacity: 4200mAh
Input: DC 5V 0.5A
Output: DC 5V 0.5A
Self-charge Time: 9 hours
Standby Time: 360 hours
Recharge Methods: USB Cable
Cycle Life: Over 500 times
Product Material: PVC + ABS
Working Temperature: 0°C ~ 45°C
-With the USB Output， so you may charge your other device such as MP3 or your friend's phone with a USB Cable!