Backup Battery for iPhone 3GS, battery case for 3G iphone
ExtraMore Electronics Co., Ltd. [China]
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External Battery Pack for 3GS iPhone,you can charge anytime, anywhere;it is with higher 1900mah capacity.
Compatible: 3G/3Gs iPhone Free USB charging and data transmission 4 LED shows charging status High-quality Li-polymer cell Capacity: 1,900mA /3.7V Colors: black MaterialABS+PC Compatible with iPhone 3G DATA transmission CE