This is a clip-type calculator. The size is approximately 7cm tall and 4cm wide, measured by an amateur. Operation has been confirmed. I think it's cute to put on your desk as a stylish clip. Children can also use it enjoyably because the clip part opens without much force. Although it's unused, it has been stored as is, so there may not be any noticeable stains, but there might be some minor scratches. Please understand that this is a home-stored, used item before purchasing.