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A unique series from a unique watchmaking studio

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A new design for a new era

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STGK031G

STGK031

Heritage Collection

INR 5,70,000.00

Apr. 2025 Release

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Features

Specifications

Exterior
Exterior: Stainless steel
Case back: See-through & Screw case back
Glass Material: Box shaped sapphire crystal
Glass Coating: Anti-reflective coating on inner surface
Case size: Diameter 30.0mm Lug-to-lug 36.2mm Thickness 10.5mm
Band width: 15mm
Clasp type: Three-fold clasp with push button release
Movement
Caliber no.: 9S27 Instructions
Movement Type: Automatic with manual winding
Power reserve: Approx. 50 hours
± seconds per month: +8 to -3 seconds per day
  • Mean daily rate is a mean value of daily rates in a condition where the movement before assembly in a case is measured in six positions in a fixed manner under artificially controlled environment for 12 days.
Normal usage accuracy: +10 to -5 seconds per day
Functions
Water resistance: 10 bar
Magnetic resistance: 4,800 A/m
Other details / Features:
  • 35 jewels
Watch finder

The three movements at the heart of Grand Seiko

9SMechanical

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.

9RSpring Drive

Spring Drive is a unique movement that delivers one-second-a-day precision, using just the power of a mainspring.

9F Quartz

The ultimate quartz movement. Caliber 9F incorporates several unique technologies that raise the performance of quartz to the high standards of Grand Seiko.