Features:

Power Supply 3000mA External Backup Battery Charger Case For Samsung Galaxy S4
Fashionable design, 100% Brand New, High quality Battery
Full body coverage protection for your Samsung Galaxy S4
Works as both an extended  battery bank and a protection case
Protective and powerful, Lightweight, thin design, Non slip comfort grip
Four Set LED lights indicates the power level remaining the case (Each light represents 25% of remaining power)
Sleek, Low-Profile design; Rechargeable up to 500 times, Fully charged in 4.5 Hours, Automatic tests function

Dimentions: 148*72*16(mm)
Capacity: 3000 mAh
Output voltage: 5V
Output current: 500mA
Input voltage: 5V
Input current: 600mA
Input port: Micro USB 

Package Included:

1 X External battery case(not include the Samsung Galaxy S4）
1 X Micro USB cable
1 X User guide