Smartcraft- BUBBLE TRAIN Bubbler Maker: Powered by 4pcs AA battery (battery not included). Cartoon Appearance: cute train shape, simulating the sound of train whistle, automatic bubbles. High Quality Material: Made of high quality plastic material, with excellent workmanship, rounded and smooth corners, children can play with confidence. Sound and light Effects: soft lighting and dynamic music, very attractive. Perfect Gifts: A perfect gift for boys and girls, suitable for New Year, Christmas, Party, Children's Day, etc