Big Red Rooster BRRC103AC Dinosaur Projection Alarm Clock, Operates On An AC Adaptor (Included) or 3 C Batteries Dinosaur alarm clock projects the time and 4 different Dinosaur images on your ceiling There are 4 dinosaur images to choose from: Diabloceratops, Stegosaurus, Diplodocus and Pterodactyl, Ampelosaurus. Dinosaur's head rotates 340 degrees. Images project up to 30 inches in diameter. Optional timer for the projection time and image can be set for 10 or 30 minutes Powered by 3 C batteries (not Included) or Included AC adaptor