The model number for a Seiko watch is found on the back face of the watch in the center or circumferential text. It is listed as two four-character strings separated by a hyphen. Seiko watch model numbers can also be looked up on Seikowatches.com if the series is known.
The Seiko watch model number can be used online to access resources and support for the specific watch. To access this information, visit Seikowatches.com, and select support. From the support page, select instructions, and enter the model number. The first half of the model number represents the calibre, while the second half represents additional colors or feature options.