Feature: * 100% Brand New 3200mAh External Backup Battery Charger Case for Samsung Galaxy S4 w/ Stand * Unique， fashionable and high-class sliding design. * To charge the portable battery， simply plug in the USB contactor into the portable battery. * The other end contact to either an USB power adaptor 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. * 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.  Specification: * Cell type: Li-polymer Battery * Input Voltage: 5V * Output Voltage: 5V * Input Current: 800mAh * Output Current: 800mAh * Capacity: 3200mAh * Charging time: about 3.6 hour * Compatibility: Samsung Galaxy S4