Q-Power fc13 with 1700mAh DUAL battery power pack for iPhone 4 is next level in case making.it has 1700mAh Battery backup battery backup power you can easily switch when you run low in power. The case is made with anti finger print stain and scratch proof UV coating, fully stainless. Finished with changeable color Bumpers, LED power measuring indicator with soft-touch ON/OFF button

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