Portable Power Spirit External Battery for iPhone 3G 3GS 4G 4S/iPod

Main Feature:
Brand new and high quality.
Easy to use, just plug it in for instant power.
Intelligent charing, with iPhone connected, the outer power source will be transported to iPhone first, then to Power Spirit.
Capacity: 1200mAh.
Charging time: 2 hours.
Standby time: 180 hours.
Talk time: Up to 3 hours on 3G Up to 6.7 hours on 2G.
Internet Use: Up to 3 hours on 3G Up to 5.3 hours on Wi-Fi.
Audio play: Up to 18 hours.
Video play: Up to 5.3 hours.
Product Compatibility: iPhone 4 4G 4S 4GS/3GS/3G/2, iPod Classic, iPod nano, iPod touch.
Size: 6.2cm x 3.3cm x 1.6cm - 2.44inch x 1.30inch x 0.63inch.
Input: 5V 0.5A
Output: 5V 0.5A