This item came from my grandparents' house. I don't know much about TEZET, so I don't know how to turn it on, and I haven't been able to confirm if it works. However, it has been stored for many years, so it probably needs a battery replacement. The case is damaged. Please check the photos before purchasing. Also, please refrain from purchasing if you are nervous about the item, as it has been stored at home and managed by a non-professional. The condition of the item is based on the seller's subjective opinion, so please check the photos before purchasing. We are waiting for your comments regarding price reductions, additional photos, and any concerns you may have. Please feel free to comment. We will respond if you have any requests. Thank you for looking. #ShowaRetro