Apple introduced the iPod Nano in 2005, when Steve Jobs pointed to the watch pocket in his jeans and asked, "Ever wonder what this pocket is for?"
The Nano went through many iterations, but the sixth-generation version, which was released in 2010, was something special. It featured a 1.55-inch touchscreen and, when coupled with a watchband accessory, could be used as a pretty awesome watch.
In 2012, Apple announced the seventh-generation Nano, chucking the square design, going back to the rectangle shape of yesteryear, and leaving all those awesome watchbands in the dust.