Big Red Rooster BRRC101AC Dog Projection Alarm Clock, Operates On An AC Adaptor (Included) or 3 C Batteries Dog alarm clock projects the time and 4 different Dog images on your ceiling There are 4 dog images to choose from: 2 dogs in a truck, Shepadoodle, Beagle, Golden Retriever. Dog'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