SLGB003

The pursuit of high accuracy has been the cornerstone of Grand Seiko’s values since its first watch was created in 1960. Less than 10 years after its birth, Grand Seiko introduced the mechanical V.F.A., standing for “Very Fine Adjusted.” First used in 1969, this designation defined a Grand Seiko watch that was adjusted so skilfully that it achieved an astonishing monthly rate of ±1 minute. In the late 1970s, the development of Spring Drive began with an aim to harmoniously blend the traditional energy of a mainspring with state-of-the-art electronic watchmaking advancements. In 2004, Grand Seiko introduced the Spring Drive Caliber 9R65, which paired automatic winding and 72 hours of power reserve with a movement technology capable of a monthly rate of ±15 seconds, setting a new standard among movements powered by a mainspring.