Your own planetarium at home projects the stars on the ceiling, accurate to time and day. It also allows you to see falling stars, thanks to the planetarium's integrated motor. You can listen to background music with the built-in FM radio or by connecting to a digital music player. The projection screen is approximately 1.6m x 2.2m at a 2m range, and it has a lumen power of 190 lm at 2m ceiling height. The planetarium comes with 2 slide discs and a stand, and it also includes batteries. It's a great addition to any home or educational setting.