The Mophie Juice Pack plus (Black) is designed to fit an Apple iPhone 4. It combines rechargeable external battery power concealed inside of a protective form-fitting case. It also offers the full protection of a hard-shell case with an ultra-thin, light-weight, low-profile design and shock-resistant band.
The Juice Pack has a soft-touch, rubberized finish and a shock-resistant band. It can charge and sync the iPhone to iTunes without removing it from the Juice Pack plus by using the included USB cable. The case 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. Embedded electronics results in no signal interference with the iPhone 4.