This is the desktop planetarium that projects an accurate view of 8,000 stars. Its built-in LED illuminates the ceiling and walls of a room with an accurate view of 61 constellations as seen from the Northern Hemisphere while a built-in Bluetooth speaker connects to a paired iPhone (including 8 and X) or Android device and plays one’s preferred ambient star-gazing soundtrack. The planetarium’s whisper-quiet motor simulates the turning of the Earth by slowly moving the image and can be sped up or slowed down with five variable speeds and accurately aligns with every day of the year. Requires three AA batteries (not included). Black. 7 3/4" L x 7" W x 7 3/4" H. (1 1/2 lbs.)