This compact and simply designed external Battery Pack Back Cover fully combines the function of mobile power bank, back cover case as well as USB charging cable. You will have more talking time while traveling or have more happy time while playing games or listening to the musics. The rock solid construction provids perfect protection for your phone.
Pls note this case can use for iPhone 7 4.7''
Main Features: 
5000mAh large battery capacity as a great backup power pack for iPhone 7 4.7''

Fast recharging speed for possible emergance use
Steady charging and discharging current guarantees your phone from common charging damage
Specifications
General
Type: Backup Power Banks ,Protective Case with Power
Material : ABS
Cell type : Li-Polymer Battery
Special Functions: Battery Cases For iPhone
Connection Type: 8 pin
Input : 5V 0.8A
Output : 5V 1A Max
USB OUTPUT:0.5A

Package Contents
Package Contents: 1 x Backup Battery Charger Case for iPhone 7 4.7''