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Pros
Pro Wearable
The Shuffle includes a clip that can be used to attach the device to clothes.
Pro Highly portable
Shuffle is really small and lightweight. It's 1.14 x 1.24 x 0.34 inches and weighs just 0.44 ounces.
Pro Affordable
Costs just $49.
Cons
Con Discontinued
Apple has discontinued iPod Nano and Shuffle. Source: https://arstechnica.com/gadgets/2017/07/apple-discontinues-ipod-nano-and-shuffle-updates-ipod-touch-models/
Con Small capacity
2GB