The iPod shuffle 4th Generation (2015 Edition) models are effectively the same as the previous 4th Gen models from 2012, but they come in a different range of colors: "space gray," gold, silver, hot pink, blue, and red. The gray and silver versions have a black "control ring," while the others have a white one. They also have different OS support requirements for the tethered computer. Notably for users with older machines, the 2015 iPod shuffle is not compatible with Mac OS X 10.6, Windows XP, or Windows Vista. It also has some distinct identifiers, which Everyi.com has meticulously documented.
Similar to earlier 4th Gen iPod shuffle models, the 2015 version includes both "clickable ring buttons" for navigation and a "VoiceOver" button on top. The VoiceOver feature audibly announces song titles, artists, playlists, and "Genius Mixes." All iPod shuffle 4th Gen models contain 2 GB of internal storage, holding approximately 500 songs, and Apple estimates a battery life of "up to" 15 hours.