Product Dimension
Battery: Li-polymer
Capacity: 4000mAh
Micro USB Input: 5V/1A (max)
Output: USB1 5V/1A (max)
USB2 5V/2.1A (max)
(not more than 10W power output when both outputs enabled)
Self charging time: 9 hours (through PC USB)
5 hours (through 1A adapter)
Power button: press to start power supply
Power indicator: 4 LED indicating battery level, each representing 25% of the capacity
Dimension: 114*58*16.5mm
Please refer to the following link for more details:
'Mophie juice pack plus' rechargeable external battery case made for iPhone 4. Totally new. To sell at $450. Pls pm me your mobile for pics if interested.