With a wind-up mechanism It is extremely beautiful and keeps time accurately. The mechanism is the same as a grandfather clock. Antique When the long hand reaches 12, it chimes the number of hours with a strong sound. When the long hand reaches 6, it chimes once. If you do not wind the chime screw, it will not chime at night. I will pack it carefully. To someone who will cherish it! Thank you. Main material: Wood Bonn-bon clock Retro Display format: Analog