Model number: DMG-01 There is some blue corrosion on the battery contacts, but it seems to be making contact and powering on. The Double Dragon software did not work, as shown in image 3, for an unknown reason. Sound is working and can be adjusted. The D-pad and A/B buttons have been confirmed to function correctly with other software. The Start and Select buttons are untested. There is minor dirt and small scratches. Thank you.