This is a Seiko Spirit radio-controlled solar-powered wristwatch. (7B22-0AZ0) It is working properly and can be used without any problems. Because it is radio-controlled and solar-powered, there is no need to set the time or replace the battery, making it very convenient. Actual size measurements: Face diameter: Approximately 37mm Wrist circumference: Approximately 18cm The photos are all that is included. Thank you very much.