Portable power that provides 80% more run time for your iPhone4! The iBatteryCase powered by Lenmar is lightweight, sleek and comfortable to wear. More importantly it charges your phone with a single button switch. No connectors, no cables, nothing to plug into. It is a reception signals protector against the phone's metallic frame. It is a protective case. It charges and it powers your iPhone4. It indicates the external power remaining in the iBatteryCase. It is the iPhone4's perfect companion.