DC (Black) Super Quality External 1900mah Battery Pack Power Station for Apple Iphone 4/4g with Protective Back Cover Go Portable Case Charger for At&t and Verizon
Flexible form-fitting silicone rubber case with built-in rechargeable battery; made for iPhone 4Integrated bumper eliminates prevents signal loss or antennae interference caused by direct contactSimultaneous pass through charge to your iPhone 4 and the caseExtra thin and easy to handle; durable, nonslip materialProvides up to 5 hours of 3G talk time, 7 hours of video playback, and 27 hours of music playback (in addition to iPhone's battery)Charge Up External Battery Travel Trips As Backup Standby Time 230 hoursLithium Ion Battery Into Protective Back DoorRubber feel, non-slip comfortable gripSuper Quality External 1900mah Battery Pack Power StationBrand New External PowerStation for the iPhone 4