Cellztuff&reg; 2200MAH External Power Bank Juice Pack Back UP Battery Cover Case for Iphone 5 16g 32g 64g (White, Silver, Red, Orange, Blue, Black, Purple) (BLUE) Dual Injection : Battery Bank adds an extra layer of protection for your phone Standby Switch : Toggle between charging and standby with a flick of a switch LED Indicator : Indicates charging mode and battery life USB Charge and Sync : Sync with Itunes without removing case Talk Time L Up to Additional 10 hours