Very nice planetary with 11 planets. Very rare, well built and complete, new. Orrery built, assembled. Very nice planetary. It is powered by 220 Volt electricity. Then the planets revolve around the Sun. The speed is adjustable Height: approximately 37 cm Weight: the planetary weighs approximately 3.7 kg Weight: 4.5 kg for the 52 books. Total weight: approximately 10 kg The planets and their respective moons are represented. - the Sun - Mercury - Venus - The earth with the moon - Mars, Phoebus and Deimos - Ceres - Jupiter Europa, Ganymède, Callisto - Saturn with Rhea, Titan, Iapetus - Uranus with Titania - Neptune with Triton - Pluto with Charon - Eris ADDITIONAL INFORMATION: The arms will be dismantled for transport and stored with their respective planets. Comes with an Allen key to install the arms of the planets. Comes with the 52 notebooks.