OSWALD Cuckoo Clock by Rhythm Clocks features a real wooden case. The Oswald is a black forest style cuckoo clock without moving weights. A continuous swinging pendulum adds even more character to this beautiful piece. The Oswald cuckoo carries the traditional look and function of Black Forest style models. The Oswald is 100% made in Japan and does not use a digital cuckoo sound, but a mechanically produced sound that creates the cuckoo sound. The Oswald comes equipped with a traditional style music box that plays Blue Danube hourly after the cuckoo chirps. Clock is battery quartz operated and requires one included standard C battery. Hourly chirp Built in music box Auto night shut off ON/OFF switch Dimensions are 20.7"H x 15.4"W Weight : 5.1 lbs.