• Grand Seiko Heritage SBGA439 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

SBGA439

R 122,950.00
R 122,950.00
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The Grand Seiko Heritage SBGA439 showcases an archetypal design complemented by a dynamic midnight blue dial reminiscent of a moonlit night sky. Diamond-cut hands and multifaceted hour markers stand in sharp contrast against the dial surface.

Powered by the manufacture Caliber 9R65 Spring Drive movement, the seconds hand glides smoothly across the dial without ticking. It delivers an accuracy of ±15 seconds per month along with a 72-hour power reserve displayed near the eight o'clock position.

Crafted with a 40.0mm stainless steel case and matching bracelet, this timepiece is fitted with a dual-curved sapphire crystal and offers 10 bar water resistance.

Key Features

Brand Grand Seiko
Collection Heritage Collection
Model Number SBGA439
Movement Type Spring Drive
Caliber Number 9R65
Case Material Stainless steel
Case Diameter 40.0mm
Lug-to-Lug 46.6mm
Case Thickness 12.3mm
Band Width 20mm
Band Perimeter 203mm
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
Crown Screw-down crown
Case Back Screw case back

Highlights

  • Grand Seiko Caliber 9R65 Spring Drive movement with smooth gliding seconds hand
  • 72-hour power reserve with dial indicator
  • Dynamic midnight blue dial with diamond-cut hands and indices
  • 40.0mm stainless steel case with dual-curved anti-reflective sapphire crystal
  • 10 bar water resistance and 4,800 A/m magnetic resistance

Frequently asked questions

What movement powers the Grand Seiko SBGA439?

The watch is powered by the manufacture Caliber 9R65 Spring Drive movement.

What is the power reserve of this timepiece?

It provides approximately 72 hours (3 days) of power reserve, tracked via the dial indicator.

What are the dimensions of the watch case?

The case measures 40.0mm in diameter, 46.6mm lug-to-lug, and 12.3mm in thickness.

What is the accuracy rating of the Caliber 9R65 movement?

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

What is the water resistance rating of the SBGA439?

The timepiece is rated for 10 bar of water resistance.

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.

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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.