This is an easy-to-use home planetarium ☆ It uses 3 AA batteries or can be powered via USB connection to a power outlet. You can turn it on with the lamp cover attached (it can also be used as indirect lighting) or remove the lamp cover to use it as a projector! Includes USB cable, instruction manual, round film, and top ring. This is an old item. There are scratches and stains in various places, and they didn't show up well in the images, but there are also scratches on the lamp cover and film. There may be other oversights. Please understand the above before purchasing.