1 External backup battery cover for iphone 5 2 size:4",for iphone 5 3 simple design and easy use 4 useful and good looking External backup battery cover for iphone 5 :Descriptions: The power pack will extend the battery Your iphone bydoubling its charging capacity . Enjoy your iphone for voice . music. viedo . game and business applications with extended .stable power . you can experence up to ...