Thank you for viewing. This item has been left unused for a long time. I am selling it because I don't use it. It is a Casio GUITAR DG-20. Sound output has been confirmed. Operation has been confirmed with an adapter. *The adapter is prone to coming loose, so you need to be careful during play to ensure it doesn't detach. Since there are no batteries, battery operation has not been confirmed. As this is an old item, it is being sold as a junk item, so we appreciate your understanding before purchasing. Please understand that there may be stains and scratches due to the used condition.