Backup Battery and Dock Apple certified for iPhone 4S (compatible also with iPhone 4 and iPhone 3/3gs) and iPod. This iPhone 4S backup battery offers hours of extra-power. The 2000 mAh battery provides fast charging, extra 45 hours of Audio, 7-14 hours of Talk time, 6-10 hours of internet navigation and also 10 hours of Video. The LED battery indicators show the power left. This battery for iPhone 4S quickly converts to hands free stand and let you enjoy Videos, Face Time chats and others without running out of power. A USB Cable is included in the box for charging the battery, also use the USB cable for docking sync & charge from your computer. Is included also a protective bag where to put the cable when you are not using it. Leds indicators show the state of the internal battery of the iPhone 4S.