Emergency backup external portable 1900mAh battery for iphone 4s 1.Battery type: Lithium-ion battery 2.Capacity: 1900mAh Emergency backup external portable 1900mAh battery for iphone 4This external backup battery is perfect to provide power for iPhone 4G anytime anywhere.Features:Designed to provide power for your iPhone 4G.Compact and lightweight, you can use your iPhone as usual as you use this ...
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