iCrown(TM) 2014 New Arrival 4200mAh External Battery Backup Charger Case Pack Power Bank for iPhone 5 5S 5C, Blue 100% Brand New and High Quality. External Backup Power Bank Battery charging Case Cover Charger For iPhone 5c 5 5s Works as both an extended battery set and a protection case Very Durable, lightweight and convenient to carry Supper Power Capacity of 4200mAh.