2200mAh MFI Apple Certified Premium Rechargeable Extended Battery Case for iPhone 5s, 5 (Black) Built in Li-polymer Battery with 2200mAh capacity to recharge 1.4 times of your phone. Support 1A fast charge, only 1.5 hours needed to recharge your phone fully. Has four LED lights indicate the power left level :0-25%, 26%-50%, 51%-75% and 76%-100%. The portable battery case features in slim fit protective design with leaving the side phone buttons available. Apple certified rechargeable extended battery case along with supporting all the latest iOS system.Precisely cutouts align perfectly with the earphone port and speaker on the phone.