I have confirmed that I can adjust the playback volume and skip tracks with the gum battery I have. The spring at the base of the main unit's lid has come off. I have kept the part. One screw is missing from the bottom of the main unit. Thank you for your understanding. There are no noticeable stains or scratches. There are no accessories. - Brand: SONY - Model Name: CD WALKMAN D-NE730 - Function: MP3 compatible - Power: ON/OFF switch - Output terminals: Headphone jack Thank you for viewing.