OEM 3000mAh External Power Pack Stand Backup Battery Charger Case for iPhone 4S 4 G Color: Black Capacity:3000mAh Input Voltage:DC5V/0.8A max Output1(30pin) Voltage:DC5V/0.5A max Output2(USB) Voltage:DC5V/0.5A max Charging time:8 hours Self power consumption time: Up to 3000hours Package Include: 1 x 3000mAh External Pack for iPhone 62x127x16m