This is a sun-earth-moon orbital planetarium model. All-in-one design, it is an perfect way to illustrate Earth's rotation, the planet's revolution around the s-un, the seasons of the year, and the orbit of our moon. The 24 solar terms, seasons and month has been given on it in English. Help child to understand moon phases, eclipses, season, etc. The s-un will give out light, just remove the wire and push the raised button on the s-un model. You can have a try. Features: It is a sun-earth-moon orbital planetarium model. All-in-one design, it is an perfect way to illustrate Earth's rotation, the planet's revolution around the s-un, the seasons of the year, and the orbit of our moon. The 24 solar terms, seasons and month has been given on it in English. Help child to understand moon phases, eclipses, season, etc. Widely application: astronomy teaching, children's cognition, encourage children to explore solar system and etc.. Note: Not suitable for rigorous astronomy scientific research. Specifications: Name: Orbital Model Material: plastics Battery: 3 * LR41 battery, 1.5V, 33mAh (included) Item weight: 1000g / 2.20lb Package size: 230 * 220 * 275mm / 9.06 * 8.66 * 10.83in Package weight: 1100g / 2.43lb Packing List: 1 * Orbital Model Kit