Mophie Juice Pack Plus Case and Rechargeable Battery for iPhone 4 (Black)

Need even more battery power for your iPhone 4? The mophie juice pack plus has our largest juice pack battery which extends the battery life of your iPhone for hours! The juice pack plus also provides a comfortable ergonomic design with the complete protection of a dual-injected hard shell case with protective rubberized band. Since it is designed to more than double the time you have to Rock, Talk, Surf and Send with your iPhone 4, the mophie juice pack plus is the ultimate iPhone 4 battery case for travel or business. More than Doubles Battery Life2000 mAh capacity, advanced battery technology delivers an incredible amount of "juice" in a small form factor, more than doubling battery life. Users will experience:- Up to 8 additional hours talk time on 3G; 16 hours 2G- Up to 7 additional hours internet use on 3G; 11 hours WiFi- Up to 44 hours additional audio playback- Up to 11 hours video playbackBattery Extender and Case in OneThe juice pack plus for iPhone 4 combines rechargeable external battery power concealed inside of a protective form-fitting case. It offers the full protection of a hard-shell case with an ultra-thin, light-weight, low-profile design and shock-resistant band.Standby/Charging SwitchFeatures a simple toggle switch allows for standby and charging mode so you only have to use the juice pack plus battery when you need it!Efficient ElectronicsEmbedded electronics results in no signal interference with the iPhone 4. Acoustic Sound EnhancementThe case design acts as a virtual speaker box, redirecting sound from the bottom of the iPhone 4 to the front, resulting in a richer, fuller sound quality. 4 Light LED Battery Status IndicatorAn integrated LED status indicator tells you exactly how much "juice" is left and also displays how much time remains during the charging process. Quick Speed500 milliamps fast charge technology, with an advanced battery for added safety, as well as 2000 mAh capacity.