Quartz Cuckoo Clock 6 leaves, 3 birds, nest TU 362 Q Colour: Walnut The clock needs two baby C batteries. Cuckoo calls on the hour with echo. The clock has a battery operated movement with automatic night-off. The running-time of the batteries is about one year. The size refers only to the clock, without pendulum and weights. 2 years product warranty. The clock is made of wood.