RINE COOOO Power Case Cover Ultra Slim Extended Battery Case with 64GB Memory for iPhone 6/6s with 2400mAh Capacity Power Bank (Black) Inside with 64GB storage. Perfectly fits for iPhone 6 / 6S (4.7inch). easy to take, ultra slim, very light. Selecting and using the top-level aluminum , Uttermost reduce the effect of the signal. It's not only a case cover ,but also a 2400mAh power bank.