This is a cosine wall clock. The movement reacts with a size AA battery, but its operation is extremely unstable. Please purchase only if you understand that repair or replacement of the power unit is required. There are no noticeable scratches or stains. There is no box or instruction manual. - Height: 28cm - Width: 28cm - Thickness: 1.3cm (2.1cm including the power unit) Please consider this item with the understanding that it is a used item and has been stored at a private residence!