Seiko Watch Production Date Calculator

To find the production date of your Seiko watch, enter the movement number and serial number from the back of your watch below, and hit "Calculate". This system currently handles over 300 Seiko movements. If your movement is not on THIS list select the "Decade Made" below to help estimate your production date. Usage information for the production date calculator is available HERE if you are interested.

4 Digit Movement Number: Eg: 5626
6 Digit Serial Number: Eg: 233937
Decade Made: