Step 1: Serial Number All modern Seiko watches have the date of manufacture contained in the 6 digit Serial number. Exceptions are pre-1970 models when the numbers were 7 digits long, and limited edition models may have a number reflecting it's piece number e.g. Fruity limiter plugin download. 90/200 meaning its the 90th of only 200 pieces.

Seiko Watch Corporation has been designing and manufacturing quality watches since 1881. Each Seiko watch has a unique serial number that can be used to identify the specific series, model and year of the watch. Because Seiko produces a variety of designs, styles and brands, the serial number becomes the main identification tag for each product. Mediacom self install kit. Although the serial number may be difficult to see unless you use a light and a magnifying glass, deciphering the model number will help you identify a genuine Seiko watch.

Last updated: May 9, 2017 According to Grand Seiko: The caliber number is a four-digit number that indicates the model of a movement (mechanical part of a watch). The Grand Seiko watch is mounted with an exclusive caliber. The mechanical caliber number starts with “9S”, the number starts with “9R” and the quartz caliber number starts with “9F”.※Some quartz caliber number starts with “8J” or “4J”.

The four-digit model number on the case back is the caliber number.In the case of mechanical models, the attached “Grand Seiko Standard Inspection Certificate” is printed with “Caliber No.” So, the caliber number can also be checked on the certificate. Source: • • •.