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Mechanical Hi-Beat 36000 GMT



[ 9S Mechanical ]



A high-precision mechanical watch that provides a glimpse of the future

This Caliber 9S86 model incorporates a GMT function into the existing functions of the automatic mechanical Hi-Beat 36000 movement, with superb accuracy in everyday use due to its high resistance to external shock.

The 24-hour scale and red GMT hand over the black dial allow the user to display the time in a different region.

The exterior design is a modern take on the stunning 'Seiko Style'—the embodiment of the Grand Seiko design philosophy which was first established for the 44GS in 1967—and features a distortion-free, wide mirror surface throughout.

A beautifully delicate and polished finish has been created on the dial, with a 'Mount Iwate pattern', expressing the magnificence of the Mount Iwate mountainside visible from the Shizuku-Ishi Watch Studio where Grand Seiko mechanical watches are made.


Case : Stainless steel Case back: Stainless steel and sapphire crystal
Glass : High definition dual-curved sapphire crystal
Coating : Anti-reflection coating on inner surface
Lumi Brite : -
Case size : Diameter 40.0mm×Thickness 14.0mm
Movement : Caliber 9S86    Instructions
Driving system : Automatic with manual winding mechanism
Power reserve : Approximately 55 hours
Accuracy : +5 to -3 seconds per day (under a static use) ; This accuracy is the result of measuring the loss/gain of the time for seventeen days before the inside movements of the watch are put in the case. The measurement has been done in the factory where temperatures or position of the movements are controlled. When the watch is actually worn, the accuracy should be from -1 second/day to +10 seconds/day (-1 second/day to +8 seconds/day for Cal.9S85, 9S86).
Clasp : Three-fold clasp with push button release
Water resistance : 10 bar
Magnetic resistance : 4800 A/m (60 gauss)
Weight : 159.0 g
Remarks : ・Screw down crown
・See-through back
・Screw back
・Jewels: 37