Grand Seiko's exceptionally accurate 9S86 Hi Beat calibre, packaged in a refined design
The exterior design is a modern take on the stunning 'Grand Seiko Style' - the embodiment of the Grand Seiko design philosophy first established for the 44GS in 1967 - and features a distortion-free, wide mirror surface. All this is part of a modern watch with an impressive dial, whose pattern is inspired by the Mount Iwate volcano in Japan.
On the dial, a beautifully delicate and polished finish is created with a "Mount Iwate pattern" inspired by the multi-ribbed contours of Mt. Iwate, the mountain visible through the windows of the Shizuku-Ishi Watch Studio where Grand Seiko mechanical watches are made.
"Mechanical hi-beat 36000 GMT"
In keeping with Grand Seiko's traditional inspirations, the watchmakers developed the very high-quality 9S85 calibre: a high-precision powerhouse (-5 to +3 seconds a day) that delivers the same power reserve (55 hours) as the core Calibre 9S85, while also providing the GMT function that allows the international traveller to ensure that the accuracy of the displayed time is not compromised when the time zone is changed. The GMT hand shows the time in the home time zone.
By pulling out the crown one position, the hour hand can be adjusted without stopping the second hand, so that the Hi-Beat 36000's highly accurate timekeeping is not lost. Calibration 9S86 is the embodiment of the Grand Seico ideal of high accuracy, while maintaining exceptional precision in both the essential time display and the GMT function.