Welcome To Medieval Master 17. Material: Brass/Metal Diameter: [12 inch] Battery-operated (batteries not included) Upgrade your home decor with the Vitra George Nelson Ball Wall Clock and enjoy the timeless appeal of mid-century style. Perfect for adding a touch of whimsy and elegance to your living space. Very Important Note Please Read It. New handmade replica of 1950. It does not have any kind of cord, rather it has a machine in which the battery will be installed.