This is a Citizen pocket watch with a moon phase function. It displays the time, moon phase, month, day, and day of the week, and there are no issues with its operation. However, it appears to have been a gift, as it has an engraving as shown in the image, and there are scratches from use. Therefore, please refrain from purchasing if you are concerned. Please feel free to contact us with any questions or price negotiations. Operation...Good Scratches/Cracks...Yes