I used this as a calendar and calculator about 20 years ago, and it's been stored in a closet since then. I haven't been able to confirm if it works because I don't know what kind of battery it takes, so I'm selling it as junk. I think it's a Heisei retro item, which you don't see much of in the Reiwa era. I hope someone who understands this, such as someone who wants to display it as interior decor or can repair it through recycling, will purchase it. Batteries are not included. ◆Approximate size: 〇Closed: 11cm (height) x 10cm (width) x 2.5cm (thickness) 〇Open: 11cm (height) ◆Waterproof packaging & anonymous shipping. Thank you for looking.