Operation not confirmed. The hourly alarm has also been checked. I used it for 3 days before listing it, and there were no problems with the operation. I don't know anything about this product. Please check the condition in the photos. This product has been stored for a long time. Please check the photos for the condition. I cannot judge the condition due to a lack of specialized knowledge. I will consider it as junk. How about it for parts or for those who can repair it? Please note that we cannot completely clean it.