2010 iPod Shuffle 4th Generation Unveiled - The Buttons Are Back

Wolverton: New iPod lineup includes compelling new features but

Apple iPod shuffle (4th Generation, 2010) MP3 Player

IPod - Wikiwand

New iPods abound—including multitouch nano—at Apple event

New Apple iPod shuffle: Smaller than some other stuff we found - CNET

I switched from 1st generation iPod shuffle to 4th generation iPod

Cracking open the iPod Shuffle (photos) - CNET

Hands-On With The New iPod Touch, iPod Nano And iPod Shuffle

Is Apple Describing the Next iPod Shuffle or Something New

Apple iPod Nano 6G • The Register

First-Generation iPod Shuffle Turns 14 Today - MacRumors