This is an old CASIO programmable scientific calculator. Compared to similar models like the fx-4800p, it can create larger programs. It can also be used as a regular scientific calculator. This item has been lightly cleaned and the cover hinge has been repaired. Basic calculations have been performed, and the buttons and display are confirmed to be responsive. However, the functionality of all features has not been verified. The main body has minor scratches and dirt. Please check the appearance from the photos. * No accessories other than the protective cover are included. * The ruler in the photos is not included with the product.