CASIO fx-373ES, a calculator with Natural Textbook Display. This is a used item, but it is still usable. There are sticker marks on the surface of the cover, but they are not noticeable. I have cleaned it, but there is some stickiness. Please purchase only if you understand this. - Brand: CASIO - Model: fx-373ES - Color: Black - Features: Natural Textbook Display - Accessories: Cover Thank you for looking.