Batteries Required?:No About this item To cultivate the scientific awareness of exercising children, can be used as the teaching model, classroom, after-school homework and small school competitions. Exercise the child's ability to grasp, promote the development of the senses and hand-eye coordination. The eight major planetary models of the solar system support DIY, exercise children's hands-on ability, and cultivate hobbies. Beautifully wrapped in a colorful box, this toy is suitable for children as a birthday or holiday gift. It is environmentally friendly plastic, non-toxic and tasteless, safe and durable. See more product details To cultivate the scientific awareness of exercising children, can be used as the teaching model, classroom, after-school homework and small school competitions. Exercise the child's ability to grasp, promote the development of the senses and hand-eye coordination. The eight major planetary models of the solar system support DIY, exercise children's hands-on ability, and cultivate hobbies. Beautifully wrapped in a colorful box, this toy is suitable for children as a birthday or holiday gift. It is environmentally friendly plastic, non-toxic and tasteless, safe and durable.