The smallest member of the Apple iPod line, the iPod Shuffle has taken on several different sizes over the years. Resembling a flash drive, the first generation offers 512 MB or 1 GB storage with an average battery life of approximately 12 hours. Lasting around the same time, the second generation sees about a 50 per cent reduction in size, but doubles the storage capacity to a maximum of 2 GB. Moreover, it features a built-in clip, allowing users to attach it to clothing, belt loops, and anything thin enough for it.
Next, the third generation iPod Shuffle takes on a whole new look, becoming more like a mini version of the regular iPod. Controls move from the device to the cable of the earbuds. It features playlists and reads out the song names, artists, and playlists via Apple's VoiceOver software. Battery life rates a little lower at 10 hours, but storage capacity increases to 4 GB. Lastly, the fourth and fifth generations shrinks considerably down to a small square that only holds 2 GB but lasts for 15 hours.