The whole family will enjoy a crystal-clear starry-night view in the comfort of your own home with this optical star projection system. Sit back and watch as a crystal-clear, slowly rotating field of 10,000 stars or heavenly bodies is projected on your ceiling or wall. Two interchangeable image disks (star field and heavenly bodies); Motorized star-field rotation; Use with included AC adapter or 3 AA batteries (not included). Ages 10 and up.