Kensington PowerGuard Battery Case for iPhone 4 (Silver) (Fits AT&T iPhone) Adds 4 hours of extra talk, 5 hours of video, 22 hours of music* Provides the power you need to enjoy multitasking between apps, FaceTime calling and more Insert a credit or business card and the two-position stand holds your iPhone 4 handsfree in portrait or landscape mode Micro USB charge and sync port, LED battery indicator, and built-in volume control button Soft touch finish feels great in your hand