Here are three retro calculators. They have been stored at home for a long time. * CASIO CQ-1: The power did not turn on even with AA batteries inserted. * CANON DM-560: The power turns on, but the liquid crystal display is spotty. It comes with the box and instruction manual. * CASIO pocket-LC: Operation has not been confirmed. It comes with a case and instruction manual. Given the above conditions, please purchase these items understanding that they are used and in a junk condition. Thank you for looking.