GRAND SEIKO

SBGR309G

Grand Seiko 9S Mechanical SBGR309G

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Grand Seiko 9S Mechanical SBGR309G

The watch has a maximum 3-day power reserve and combines the latest in hairspring technology with an escapement developed through the 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. The delicacy, strength and beauty of the movement can be enjoyed the exhibition case back.

Exterior
Exterior: Stainless steel
Case back: See-through & Screw case 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
Band width: 21mm
Clasp type: Three-fold clasp with push button release
The perimeter of Band: 205mm
Movement
Caliber no.: 9S68 
Movement Type: Automatic with manual winding
Power reserve: Approx. 72 hours(3 days)
Mean daily rate: +5 to -3 seconds per day
Functions
Water resistance: 10 bar
Magnetic resistance: 4,800 A/m
Other details / Features:
  • Screw-down crown
  • 35 jewels

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