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[ 9S Mechanical ]



A Standard-Setting 3-Day Automatic Watch with Lasting Quality

With an upgraded Caliber 9S55 mechanical movement, this watch typifies the standard of high quality in the Grand Seiko collection.
The watch boasts a maximum 3-day power reserve and combines the latest in hairspring technology with an escapement (escape wheel and pallet) developed through Seiko's MEMS technology to achieve high accuracy and stability when worn.
The exterior exudes a strong sense of presence and a tireless luxury befitting the Grand Seiko standard.
One can enjoy watching the mechanical movement exquisitely mark out the time through the transparent case back.
This model pushes the performance and quality of both the movement and the exterior to the limit, and is certain to tell time and define moments for its wearer for a lifetime.

This model was awarded the Long Life Design Award at the Japan Institute of Design Promotion's 2010 Good Design Awards. The evaluation committee praised the watch's function and design, noting: \The movement of the second hand encapsulates the precision of a mechanical watch. While the movement has evolved to meet the demands of modernity


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 44.6mm×Thickness 140.0mm
Movement : Caliber 9S61    Instructions
Driving system : Automatic with manual winding mechanism
Power reserve : Approximately 72 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)
Remarks : the design adhered to unchanging essentials to yield a watch that can be worn for a lifetime. Grand Seiko is emblematic of Japan as a beacon of technology and will continue to refine and improve as an icon as much as it will be loved by its customers.