Above the wheel was a monochrome 138-by-110-pixel LCD that displayed a menu or information about the selected track.

Their major functional differences lay in their storage capacity and battery life.

First generation iPod Minis were available in five colors: silver, gold, pink, blue, and green.

The iPod Mini used Microdrive hard drives (CompactFlash II) made by Hitachi and Seagate.

A proprietary dock connector was provided on the bottom of the device for a connection to a computer's USB or FireWire port.

Along the top it had a hold switch, a headphone jack, and a remote connector for accessories.

By following one-of-many sets of online instructions detailing how to replace the battery, such as this one by iFixit, users could self replace the battery and so avoid having to send the iPod back to Apple, saving time and money.

[6] The Nano used flash memory to accomplish an even thinner casing, and featured a color screen.