I believe this item was obtained in a crane game a long time ago (20 years). Therefore, it's a rare item that is difficult to obtain since it's not widely available on the market. When you press the equal sign button, the familiar "cha-ching" sound will play. The size is about one size larger than an actual cassette tape. It's very cute. It's new and unused, but I opened the box and tested the function for this listing. It requires two AAA batteries.