When you put in a size AA battery, it moves around in circles. It can also be used as interior decoration, and you can put stuffed animals on it to play with. Size: Approximately 18 x 17cm There is a small peeling-like scratch on the rubber part of the rear tires, but it's not very noticeable and I think it can still be played with. Please check the photos. *Shimajiro is not included.