Features: This is a DIY hand crank wooden music box set, it needs to be assembled by yourself. No battery required. Complete the wooden puzzle and experience the fun of DIY model. It\'s a special music treasure box, you can turn the side handle, and it can play music. Exercise children\'s ability to use hands and brain, broaden children\'s thinking ability, and play and learn knowledge at the same time. It also has the function of home decoration. Best gift for students, children, family, colleagues, friends, lover.