iPhone 4/4s, 1500 mAh Extended Back Up Battery Case, Slider Design W/ Built-In Audio Port, Micro USB Port, Wireless Receiver Charge Pad. On/Off Switch and Battery Gas Gauge.

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All iPhone 4/4s come with built-in micro USB port, great for travel or charging away from home. Choice of three wireless receiver options, 1) Powermat and Durecell Charging Mats. 2) Qi type Charging Mats, Energizer, LG, Nokia, other Qi mats. 3) All mats.

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