First, that is (so far as I can inform and Grand Seiko has discovered) essentially 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 excellent achievement that culminates a long time of labor for Grand Seiko.
In 1969, the model launched its first “Very Wonderful Adjusted” motion, which was ±1 minute monthly. Now, 56 years later, the brand new 9RB2 caliber – the Extremely Wonderful 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 in the present day. On prime of all that, the motion has a stable 72-hour energy reserve and a compact 30mm by 5.02mm dimension. Whereas I may need missed just a few 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.
