The Griffin Technology PowerBlock Micro Wall Charger is super compact USB AC charger. It allows you to charge your iPhone, iPod touch, nano and classic. It can work for many other USB connectible devices as well. Just plug the PowerBlock Micro into a wall socket and attach your iPod / iPhone via the supplied USB cable or other device by its USB cable. The PowerBlock Micro delivers a quick 5W charge. It is a space-saving, Energy Star qualified unit that is great for quickly charging your iPod / iPhone or other devices that can connect via USB.