Measuring 9″ (23cm), This Cuckoo Clock is a classic simple design with bird carving. The wood case is simply stained in walnut and framed with carved maple leaves a wooden pendulum has imitation weights. The cuckoo opens the door at the hour, and tweets and calls out the number of the hour with an echo. Afterwards one of the 12 alternating melodies are played. The clock has a switch on the side which enables you to turn off the music separately, or both the cuckoo and the music. It has a light sensor which automatically turns off the cuckoo and music after dark. This clock is run by a quartz battery clockwork that runs on three 1.5V batteries – Size C (not included).