2004, Aya Brokering-Iwata (tr.), Yasukuni Notomi (author), iPod Fan Book: go everywhere with iPod, O'Reilly, →ISBN, page 42,
If you have a new fourth-generation Click Wheel iPod, you can even make multiple On-The-Go Playlists.

2005, Brian Tiemann, iPod + iTunes for Windows and Mac in a Snap, Sams Publishing, →ISBN, page 6,
4G—Fourth-generation iPod. Dock connector on the bottom. Integrated “click wheel” interface with the four control buttons embedded under the directional points of the touch-sensitive navigation wheel. 20GB or 40GB capacity.

2006, Scott Sigler, Earthcore, Dragon Moon Press, →ISBN, page 36,
The [sic] thumbed the iPod's click-wheel until the display read “The Donnas – Take Me to the Backseat.”

Click wheel

Meaning

Noun