Large diameter size 9S Mechanical Model with a dial surfaced by an original pattern in a special color
Grand Seiko mechanical watches are manufactured in Iwate Prefecture's Shizukuishi Town. The 9S Mechanical Model limited editions are distinctive for their brown color reminiscent of the local traditional blacksmiths working iron with flames.
The radial spiral pattern on the dial consisting of 80 spun curved lines is an original insignia adopted for the 20th anniversary limited edition models of the 9S Mechanical caliber and embodies the Grand Seiko spirit connecting the path of history it has followed to the future. The “G” and “S” of Grand Seiko and the “S” mark of Daini Seikosha (currently Seiko Instruments Inc.) , which produced the first 10-beat watch, “45GS,” are regularly arranged.In the distinctive 42mm case, SBGR311 equips caliber 9S68 which is the large size automatic mechanical movement with date display.
Being large diameter size, SBGR311 achieves an elegant form with their narrowed lugs on the inner side and are designed to maintain high visibility and presence while still fitting nicely on the wrist.
Special specifications on the case back include the Grand Seiko lion emblem in gold color and a "Caliber 9S 20th Anniversary Since 1998 Limited Edition" inscribing, along with the 0001/1300~1300/1300 serial number.
|Case back:||See through Screw Back|
|Glass Material:||Dual-curved sapphire crystal|
|Glass Coating:||Anti-reflective coating on inner surface|
|Case size:||Diameter 42.0mm Lug-to-lug 47.9mm Thickness 13.1mm|
|Clasp type:||Three-fold clasp with push button release|
|The perimeter of Band:||205mm|
|Caliber no.:||9S68 Instructions|
|Movement Type:||Automatic with manual winding|
|Power reserve:||Approx. 72 hours(3 days)|
|Mean daily rate:||
+5 to -3 seconds per day
|Normal usage accuracy:||+10 to -1 seconds per day|
|Water resistance:||10 bar|
|Magnetic resistance:||4,800 A/m|
|Other details / Features:||
The three movements at the heart of Grand Seiko
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.