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HomepageDaily ChatGrand Seiko Spring Drive SBGZ003 and SBGY002
February 12, 2020

Grand Seiko Spring Drive SBGZ003 and SBGY002

Being a Panerista all my life, I finally surrendered to Grand Seiko. Imagine the gap between these two. Only the blind would remain indifferent to the Spring Drive floating second hand. Grand Seiko watches are so perfectly balanced. I can't believe I am going to say that, but for me this is a point of no return.

Two manual winding movements open new design possibilities for SBGZ003 with Caliber 9R02 and SBGY002 with Caliber 9R31, utilizing two mainsprings in a single barrel to extend the power reserve. The timepieces share a slim case design with the Zaratsu polishing process.

Grand Seiko SBGZ003 and Grand Seiko SBGY002

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