As we are in the process of reopening our boutiques, the Grand Seiko team remains available to you by email Boutiques.USA@grand-seiko.us.com to answer questions you may have and continue to service you.
Check the case back of your watch to find the caliber code inscribed on it, and read the instructions pertaining to your watch caliber code. It is a 4-digit number to the left of the hyphen mark.
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