Thank you for viewing! I haven't used it much, so in my subjective opinion, the exterior is in good condition for its age! I updated the OS to Ver. 3.00 for this listing. ◇ Operation check details ・OS ver. 3.00 (final version) ・Sound output check from MIDI completed ・Knobs & corner switches are all working fine ◇ Non-smoking, no pets ◇ Please understand that there may be scratches and stains that are not visible in the photos. ◇ No claims and no returns accepted.