IPod:

Like other digital music players, iPods can serve as external data storage devices. Storage capacity varies by model, ranging from 2 GB for the iPod Shuffle to 128 GB for the iPod Touch (previously 160 GB for the iPod Classic, which is now discontinued).

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What is the largest data capacity for an iPod product?
128 GB