Features: Excellent quality material: fine quality wood material and exquisite workmanship provide it smooth surface; selected top-quality metal components ensure the best and stable performance. Suitable size: 12*8*5cm mini size doesn\'t occupy too much space to store; and it is convenient to carry. DIY fun: this wooden puzzle plane requires manual operation bringing the pleasure of DIY and training hand-on skills. Educational toy: it vividly teaches kids the movement of sun, moon and earth, inspires their creativity and imagination and cultivates their abilities like concentration, hand-eye coordination and pattern recognition. Recommend age: the toy is fit for 7-14 years old kids. Power supply: it is powered by 2pcs AA battery(not included). Best gift: there is no better gift than this for children on their birthday, children\'s day, etc. Meanwhile it\'s a great choice for decorations in living room, study room, etc.