First, that is (so far as I can inform and Grand Seiko has discovered) probably the most correct watch on this planet powered by a mainspring. Sure, it is a Spring Drive motion with a quartz oscillator, however ±20 seconds per yr (sure, per yr) is an impressive achievement that culminates many years of labor for Grand Seiko.
In 1969, the model launched its first “Very Nice Adjusted” motion, which was ±1 minute per thirty days. Now, 56 years later, the brand new 9RB2 caliber – the Extremely Nice Accuracy or U.F.A – is 36 instances extra correct. It is also 9 instances extra correct than the Caliber 9R86 – Grand Seiko’s subsequent most correct motion at this time. On prime of all that, the motion has a stable 72-hour energy reserve and a compact 30mm by 5.02mm dimension. Whereas I might need missed a number of releases at this Watches and Wonders, this watch alone, because it stands now, would have been sufficient to rank among the many most spectacular achievements this yr—however they did not cease there.
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