Grand Seiko Heritage Collection Caliber 9S 20th Anniversary Limited Edition
SBGR311
Limited Edition of 1,300pcs
SBGR311 is a large diameter size 9S Mechanical Model with a dial surfaced by an original pattern in a special color, limited edition of 1,300 pcs.
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 in diameter size, SBGR311 achieves an elegant form with its narrowed lugs on the inner side and is 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 "Calibre 9S 20th Anniversary Since 1998 Limited Edition" inscribing, along with the 0001/1300~1300/1300 serial number.
SBGR311 Specification:
Movement
Caliber: 9S68
Movement Type: Automatic with manual winding capacity
Power reserve: Approx. 72 hours(3 days)
Accuracy: +5 to -3 seconds per day (when static) / +10 to -1 seconds per day (normal usage accuracy)
Exterior
Case Material: Stainless steel
Glass Material: Dual-curved sapphire crystal
Glass Coating: Anti-reflective coating on inner surface
Case size: Diameter 42mm × Thickness 13.1mm
Band Material: Stainless steel
Clasp type: Three-fold clasp with push button release
Other details
Water resistance: 10 Bar
Magnetic resistance: Equipped
Case back with lion emblem
Date display
Screw case back
Screw-down crown
See-through case back
Serial number engraved on the case back
Stop seconds hand function
35 jewels
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