The smallest and most basic iPod, and the only one without a screen. Popular with runners and people on the go, the case clips directly onto a sleeve or pocket without an extra accessory. The 5th-generation shuffle, introduced in 2012, holds up to 480 songs in 2GB of flash memory. Since there is no screen, starting with the 4G shuffle, the VoiceOver feature speaks the names of songs, artists and playlists. Long - Square - Long - Square The shuffle keeps changing its shape. The first model looked like a pack of traditional chewing gum with a control pad similar to the original click wheel. Followed by a square case that was nothing more than the control pad, the 3rd-generation shuffle was again long and narrow, but the only controls were on the earbuds cord. The 4th-generation (2010) and 5th-generation (2012) shuffles returned to the square control pad style. See iPod and iPod models.