If you like playing around with deep settings on your electronic devices, you might want to have a look at the Diagnostics Mode screen on the iPod Nano. Here is how to do it.

1. Reset the unit by pressing and holding Menu and the Center Button simultaneously.

2. After about 5 seconds, the screen will melt away and the Apple logo will appear. Now press and hold Rewind and the Center Button simultaneously.

3. Now you can navigate the screen using the Forward and Rewind buttons. To exit Diagnostics Mode, you will have to reset the unit again.

See also: The iPod’s Diagnostic Mode