The Click Wheel - the iPod's Greatest Innovation

Shopping.com Tip: All iPod MP3 players feature a clickwheel navigation system - which allows you to easily scroll through playlists, videos, and photo albums with one finger.

The iPod click wheel is located on the front of all iPods, and can be locked so it doesn't move if you put your iPod on a belt clip or in your purse.

The click wheel works on the same principles as your laptop built-in mouse, and uses sensing techniques to know what you are selecting.

Following the indicators on the click wheel, you can fast forward, adjust volume, move through lists or press in the center to see a photo full screen.