Riki clock with a simple and highly visible design, approximately 25cm in diameter. - Model Name: Riki - Size: Approximately 25cm in diameter - Battery Type: AA battery - Mounting: Includes a hook for wall mounting Thank you for viewing. There is fine dust inside the glass, possibly due to aging. It seems like it could be cleaned by removing the black screws on the back, but please do so at your own risk. Also, there is a scratch on the edge of the clock in one place. Please consider the above points before making a purchase.