Calibre 9F Grand Seiko: The most accurate mechanical movement of this century
The mechanics used in Grand Seiko's Caliber 9F engine use Astron Quartz technology. This technology delivers higher performance and...
Grand Seiko uses Micro Electro Mechanical Systems (MEMS) technology in its manufacture
Grand Seiko carries on doing innovate in its desire to make the best watches in the world on mechanical watches. This foundation...
