1. Power supply and protection case 2-in-1 for iphone
2. Charge or SYNC with iTunes without taking out of the case
3. Anti-broken structure to protect the mobile Phone from unexpected hurts
4. Sophisticated design never scratch the back of  iphone
5. More than 300% increase of running time
6. The LED show the battery capacity
7. Offer all kinds of backup battery cases for mobile phones.