This is an auto tuner SR-550 that was removed from a Mighty Boy a while ago. Since the operation has not been confirmed, it is considered junk. Would anyone who can fix it or use it as is be interested? It seems like it could be installed in a Mighty Boy, Cervo, Alto, Fronte, Jimny, or similar vehicles. Retro-design car audio tuner, 6-button operation. - Number of buttons: 5 - Design: Retro - Condition: Used Thank you for looking.