1.4K definition slides: equipped with 13 different precision slides; they are the solar system, the earth, the moon, the , the , the composite panorama of the , the Andromeda Galaxy, NGC4302 NGC4298, the observable universe, M60UCD1, The Nebula, Mystic Mountain and the Small Magellanic Cloud; these realistic discs of the movie take you into a fantastic cosmic world. 2.Silent rotation on the center : It uses a silent motor to rotate slowly, which does not disturb your rest and even helps you fall asleep faster, showing the flow of star trails; as if the real scene of the universe is in front of you. The rotation can be set to turn off after 1 or 2 hours or the default of 4 hours to automatically turn off. 3. quality material: Made of safe and environmentally friendly ABS material, the surrounding is smooth and burr , which does not hurt hands; the light emitted is also extremely soft and does not cause harm to the human body. 4.Large projection mask: supports 360° rotation, and can project stars and the solar system on walls, floors and ceilings; 1.5m 5m rotating focus can adapt to different floor heights. When the product is 3 meters from the projection surface, the projection area is 12.5 square meters, and so on.