Casio "Data Bank 150" Calculator, calendar, schedule, and MORE all in this retro little brick of plastic. I love the thing, style and function, but being in collage, my FOOD factor outweighs my watch needs, so I gotta sell it off. I'm not sure how much it's worth, but I HOPE it's more than $5, which is how much it starts at. Thanks for reading and please check it out!