iFans® Apple MFi certified 1800mAh iPhone 4 4s Battery Case Cover Compatible with IOS8 +, External Battery Case Battery Case spare battery Power Pack For iPhone 4S 4, Original dock charging port, two different colored frames - black [12 month warranty] (Electronics)
I'm very satisfied with this case, I had six months ago in advance a case of this kind, however, from another manufacture, and am pleasantly surprised how quickly but the technology has evolved, and how attempts, the permit fails Cass as thin as poss