for samsung galaxy s4 battery case, for galaxy s4 battery case with flip cover

Featrue:

1.100% Brand new and high quality.
2.High quality Rechargeable Battery Case for Samsung Galaxy S4

3.Extends the battery life of your phone for hours and provides a comfortable ergonomic design with the complete protection of a hard case - all in an ultra-thin, light weight, low profile design 
4.LED indicator for remaining battery power 
5.Unique switch design, control the charging start at any time 
6.Internet Use: Up to 5.5 hours on 3G & Up to 8 hours on Wi-Fi 
7.USB-micro data cable included 
8.8 color available

9.Retail package

Specification:

Capacity:3200mAh
Input:5V-0.5~1A
Output:5V-1A
Use Temperature:-10+40 dgree Centigrade
Storage Temperature:-20+50 Degree Centigrade
Self-Charging time: 5 hours
Talk time: up to 7 hours on 3G / up to 16 hours on 2G
Internet Use: up to 7 hours on 3G / up to 13 hours on Wi-Fi
 

Detail pictures :