• Grand Seiko Heritage SBGA437 Men's Spring Drive 40mm Stainless Steel Watch
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Grand Seiko Heritage Men's Spring Drive Stainless Steel Watch

Grand Seiko Heritage Men's Spring Drive Stainless Steel Watch

SBGA437

R 116,950.00
R 116,950.00
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The Grand Seiko Heritage SBGA437 features a classic design with a silken sunray dial celebrating the silk-producing heritage of the Shinshu region. The delicate texture is achieved through a specialized silver plating process that catches light effortlessly from every angle.

Powered by the innovative Spring Drive Caliber 9R65, the seconds hand glides in a smooth, continuous motion across the dial without ticking. It offers an impressive 72-hour power reserve clearly tracked by an indicator near the eight o'clock marker.

Crafted in durable stainless steel with a dual-curved sapphire crystal, this timepiece offers exceptional precision rated at ±15 seconds per month alongside 10 bar water resistance.

Key Features

Brand Grand Seiko
Collection Heritage Collection
Model Number SBGA437
Department Men's
Movement Type Spring Drive
Caliber 9R65
Case Material Stainless steel
Case Diameter 40.0 mm
Lug-to-Lug 46.6 mm
Thickness 12.3 mm
Band Width 20 mm
Band Perimeter 203 mm
Glass Material Dual-curved sapphire crystal
Glass Coating Anti-reflective coating on inner surface
Clasp Type Folding clasp with push button release
Power Reserve Approx. 72 hours (3 days)
Accuracy ±15 seconds per month (±1 second per day)
Water Resistance 10 bar
Magnetic Resistance 4,800 A/m
Jewels 30 jewels
Features Screw case back, screw-down crown, power reserve indicator

Highlights

  • Grand Seiko Spring Drive Caliber 9R65 with smooth gliding seconds hand
  • Silken sunray patterned dial honoring the heritage of Shinshu
  • Stainless steel 40.0 mm case with dual-curved anti-reflective sapphire crystal
  • 72-hour power reserve with dial indicator
  • 10 bar water resistance and 4,800 A/m magnetic resistance

Frequently asked questions

What movement powers the Grand Seiko SBGA437?

It is powered by the Grand Seiko Spring Drive Caliber 9R65 movement featuring 30 jewels.

What is the power reserve of this timepiece?

The watch provides an approximate 72-hour (3-day) power reserve, monitored via the dial indicator.

What are the case dimensions of the watch?

The stainless steel case has a 40.0 mm diameter, 12.3 mm thickness, and a 46.6 mm lug-to-lug distance.

What level of water resistance does the watch have?

The SBGA437 offers a water resistance rating of 10 bar.

What type of crystal is used on the dial?

It features a dual-curved sapphire crystal with an anti-reflective coating on the inner surface.

What is the accuracy rating of the Spring Drive movement?

The movement delivers an accuracy of ±15 seconds per month (approximately ±1 second per day).

View full details

The three movements at the heart of Grand Seiko

  • 9S Mechanical

    One of the world's foremost mechanical movements, the culmination of high-precision micro-engineering and the attention to detail of Grand Seiko’s expert watchmakers.

  • 9R Spring 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 performance of quartz to the high standards of Grand Seiko.