Mophie Juice Pack Air Case 1500 mAh Battery for iPhone 4 / 4S White (Wireless Phone Accessory)
Very convenient when you do not have the ability to recharge his iphone a long day. Faults: too burdened the iPhone, the hull is too smooth and slippery; afraid to drop it, so I only use it when I really can not do otherwise. Disappointment, I intend