Energizer/XPAL Energi to Go Portable Case Charger for Apple iPhone 4 / iPhone 4S (Black) Energizer/XPAL Energi to Go Portable Case Charger for Apple iPhone 4 / iPhone 4S (Black)

The Energizer AP1201 case for iPhone 4 is the first and only silicone case with built-in rechargeable battery that provides a permanent power source that extends the life of the iPhone 4 providing twice the amount of power to keep you going. It's the power, protection and style that you expect from a brand you know and trust.Power ManagementThe AP1201 provides high speed charge direct to your iPhone 4 or simultaneous pass through charge to your iPhone 4 and the case. * Standby up to 200 Hours * Music 27 up to Hours * Video up to 7 Hours * Talk up to 5 Hours on 3G (9 Hours on 2G) * Internet up to 4 Hours on 3G (7 Hours on Wi-Fi)Features: * Flexible form-fitting silicone rubber case with built-in rechargeable battery; made for iPhone 4 * Integrated bumper eliminates prevents signal loss or antennae interference caused by direct contact * Simultaneous pass through charge to your iPhone 4 and the case * Extra thin and easy to handle; durable, nonslip material * Provides 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) * Phone and screen protector are not included.