This is a very old wall clock. It's made of wood and has a spring mechanism. The glass cover was not present when I acquired it. #mamezakura antique market I have confirmed that it works. I wound the spring and it ran for about two days. There's a bell inside, and when it vibrates, something moves and makes a sound. It produces a very nostalgic bell sound. The clock face is very retro and has a great look. ^ ^ Please consider it. Type...Interior