This teeny little square of musical joy is one of the most interesting things to happen to the iPod range in recent years. It's a very small device, but gives full touchscreen operation, and an interface based around iOS - seen in the iPod touch. There's a clip on the back, making it easy to use as a sport player. It's not cheap, and there are much more affordable non-Apple alternatives out there. But this is a class act.
Read the full iPod nano 6th Gen (2010) review