Thank you for viewing. This is a listing for a CASIO programmable scientific calculator, the "FX-860P." This model was released around 1987 and was a popular and well-regarded machine used by many engineers and students at the time. This listing is for the calculator body only; no other accessories are included. I have confirmed that it can perform basic input with batteries installed, but I have not checked all functions, and I cannot guarantee its operation. Therefore, please understand that this is a junk item or a product "as is" before purchasing. Also, two screws are missing from the cover on the back of the calculator. Please consider this point as well. There are scratches and stains due to aging. Please check the images for the condition. Batteries are not included, so please prepare them separately. 【Notes】 Product is approximately 35+ years old. Two screws are missing from the cover. Operation is not guaranteed. No claims and no returns (NC/NR) are accepted. Everything included in the listing is shown in the photos. Please purchase only if you understand that this is a used item and is being sold "as is." Thank you for your consideration.