This was part of a prank set where you serve non-alcoholic beer as regular beer and then reveal it's actually non-alcoholic! It's a button that plays the sound 【チャッチャラーン♪】. Includes instructions. Batteries were not included. Dimensions: Approximately 9cm x 4cm Uses AAA batteries and can be used repeatedly, so it can be used as a party favor. I have only opened it to check the contents and take photos, and have never used it. I also have the other items that came with the set (props like placards and hard plastic cups), which are also new. If you'd like them, I can sell them to you for an additional shipping fee. Please let me know. Blue sound button, with instructions. - Color: Blue - Type: Sound button - Instructions: Includes handling instructions - Battery warning: Caution: Do not insert batteries