Grand Seiko Heritage Collection Shinshu Spring Drive 40 MM SS Watch - SBGA437

“Watch displayed and been tried on. Might have small signs of trial. No major signs of wear.”

An archetypal Grand Seiko design, with a silken dial

Shinshu, the region where all Grand Seiko Spring Drive watches are created, was once a major center of silk production. This classic design has a dial whose silken sunray pattern pays tribute to this heritage.

The fine grain of the pattern radiates outwards and catches the light at every angle. It has a soft texture, as if it were the finest silk, which can only be created by the application of soft silver, using a special method of silver plating.

Thanks to Grand Seiko’s unique Spring Drive movement, the seconds hand glides silently and smoothly, with no “tick”, across the dial, perfectly reflecting the natural and continuous flow of time. The power reserve is 72 hours when fully wound and is shown on the discreet indicator next to the eight o’clock index.

Exterior

Exterior:          Stainless steel

Case back:       Screw case back

Glass Material:            Dual-curved sapphire crystal

Glass Coating: Anti-reflective coating on inner surface

Case size:        Diameter 40.0mm Lug-to-lug 46.6mm Thickness 12.3mm

Band width:    20mm

Clasp type:      Three-fold clasp with push button release

The perimeter of Band:          203mm

Movement

Caliber no.:     9R65 Instructions

Movement Type:         Spring Drive

Power reserve:            Approx. 72 hours(3 days)

Accuracy:        ±15 seconds per month (±1 second per day)

Functions

Water resistance:        10 bar

Magnetic resistance:   4,800 A/m

Other details / Features:        

Screw-down crown

30 jewels

Power reserve indicator