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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!