2118, 2202, 2205,2206,2406, 2415, 2418, 2706, 5246,5606, 6106, 6119, 7005, 7006 and 7019.
The below diagram show you how to locate and determine the Calibre Number of a SEIKO.
click image for bigger picture
Click here to Seiko Support site
click image for bigger picture
Click here to Seiko Support site