iSimple® ReVolt™ (IS710) Docking Adaptor for 5-volt USB iPod and iPhone Models Some newer versions of the iPod and iPhone use a new type of connection – called 5-volt USB – for docking and battery charging. The iSimple® ReVolt™ is a plug-and-play adaptor that allows your original iPod docking cable to charge the iPhone 3G, iPod touch 2nd gen and iPod nano 4th gen. Facilitates battery charging on the iPhone 3G, iPod touch 2Gen and iPod nano 4Gen Retains digital quality audio or video (if applicable)