It is in working condition with 407 hours, however a few seconds after playback, an ERR message on the display shows up (please see pic), but it doesn't affect functionality. All record and playback features work fine. The door locking mechanism is broken, which I repaired with double-stick tape, so the door does open and close properly.  It works fine, however since this is an old piece of equipment, so I am selling as is.  I don't have technical expertise with this particular type of unit, but feel free to reach out if any questions.