Retro cool, fairly sturdy packaging, doesn’t take up much space.

All things that MiniDisc took inspiration from. It added metadata, near-infinite rerecordability, and on-the-fly track division, combination, and rearrangement.

Never took off in the US, more popular in Europe, very popular in Japan. They were expensive and the first device’s encoding chip gave poor results on a battery that could barely record an hour.