2000 D-EJ721
The D-EJ721 is a portable CD player equipped with an electronic anti-skip mechanism using G-Protection.
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The D-EJ915 is part of the more fully equipped late pure-CD Walkman, combining G-Protection with an ultra-slim body, optical digital output, and a backlit jog remote capable of passing CD text into compatible MiniDisc systems. It remained a CD player at its core but is clearly built to interact with a broader ecosystem.
That wider role matters here. The D-EJ915 is part of the moment where portable audio is expected to move between formats and devices instead of remain isolated. It reflects how listening habits had already expanded beyond a single machine.