Power at home and power to go. All the power you need is never far away with the Kensington Charging Dock with Mini Battery Pack for iPhone and iPod. The dock recharges your iPhone or iPod so you can leave home with it fully charged. The dock also charges the included Mini Battery Pack so you can take an extra boost of backup power with you on the go. Compatible with iPhone 3G, iPhone, iPod touch, iPod nano (1st, 2nd, 3rd, 4th gen), iPod classic, iPod mini, iPod (1st, 2nd, 4th, 5th gen). Actual play time may vary by device. Some devices, depending on age and usage will have extended usage times that differ from above. As your Kensington Mini Battery Pack is used over time, it will have a reduced ability to provide extended time and the times will decrease from those shown above.