This model incorporates Calibre 9S86, the high-specification movement that delivers the same accuracy (-5 to +3 seconds a day) and the same power reserve (55 hours) as the core Calibre 9S85, while also offering the GMT function that the international traveller needs to ensure that the accuracy of the time shown is not compromised when the time zone is changed. The GMT hand shows the time in the home time zone.
The exterior design is a modern take on the stunning 'Grand 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', inspired by the many-ridged contours of the Mt. Iwate, the mountain that is visible through the windows of the Shizuku-Ishi Watch Studio where Grand Seiko mechanical watches are made.
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|Case Material:||Stainless Steel|
Distance Between Lugs: mm
|Band/Bracelet:||Bracelet - Stainless Steel|
|Hand Indicators:||Hour, Minute, Seconds, 24-Hour|
|Calibre no.:||9S86 Instructions|
|Movement Type:||Automatic - Powered By The Movement Of The Wearer|
|Accuracy:||+5 to -3 seconds per day (when static)|
|Battery Life:||55 Hours Power Reserve|
|Dual Time:||Yes - 24 Hour Hand Can Be Adjusted To A Second Time Zone|
|Water Resistance:||100 Metres|
|Other details / Features:||
Precision. It's the pursuit of every watchmaker. When Grand Seiko was born in 1960, it was ready to break tradition. After meeting the chronometer standards of the time, Grand Seiko set its own accuracy standards in 1966. By 1998, advancements in materials and craft gave rise to the New Grand Seiko Standard. Every movement undergoes rigorous testing in six positions and three temperatures over seventeen days. The craftsmen and women uphold their commitment to quality while consistently exploring the limits of possibility.
One of the world's foremost mechanical movements, the culmination of high-precision micro-engineering and the attention to detail of Seiko's expert watchmakers.
Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.