This is a Sony Net MD Walkman MZ-N707 Type R Blue Minidisc Recorder / Player.  The recorder has been tested to come on to play disc with functionable buttons on the system.  The headphones plug in and have functionable buttons as well.  That being said I can't hear any sound from the player or headphones.  I am not sure if I am not doing something right or have to hit another button to produce sound.  I will be selling the item as-is because there is no sound coming from the system.  Please look at all the pictures as they are part of the description.