The battery-operated clock mechanism of our cuckoo clock movement is designed for longevity and reliability. The hourly cuckoo a charming feature that adds character to your clock. Features -Color:Black -Material:Reusable plastic -Size:8.20X7.30X4.20cm/3.22X2.87X1.65in -Power supply: 3 x No. 3 battery (not included) -Wallfriendly nonhook design: the nonhook feature of this cuckoo clock movement makes sure no damage to your walls, providing a secure and nonworry hanging solution -Delightful cuckoo bird sound: the hourly cuckoo bird sound adds a whimsical touch to your home, making timekeeping a fun and engaging experience -Accurate and mechanism: the reliable cuckoo movement makes sure accurate timekeeping and durability, ensuring it remains a staple in your home -Elegant and simple style: the clock movement's clean and simple design makes it a versatile addition to any clock -Longlsting durability:rafted with plastic materials, this accessory durability and consistent performance over time list: 1 x cuckoo wall clock movement