Grand Seiko SBGA491

$ 5,600.00 USD


Artistry of the Katana—U.S. Exclusive Models influenced by the materials and craft of the blade.

The Japanese sword, known as the katana, is a world-renowned masterpiece in steel. Crafted through a distinctive and sophisticated process, the katana has created fascination and allure the world over.

Derived from nature and brought together through expert craftsmanship, the katana is made from earth, fire, water, and air. Iron sand is drawn from the earth and then heated in a furnace known as a tatara. The melted sand forms the Japanese steel, known as tamagahane.

From this Japanese steel, two variations can be found. The first is the high-carbon steel used for the outer sharp edge, or kawagane, and the second is the strong inner core of the blade, or shingane. Grand Seiko honors the katana and shingane with the U.S.-exclusive SBGA491.



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 40.0mm Lug-to-lug 46.2mm Thickness 12.5mm

Band width: 19mm

Clasp type: Three-fold clasp with push button release


Caliber no.: 9R65 Instructions

Movement Type: Spring Drive

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

Other details / Features:

  • Screw-down crown
  • 30 jewels
  • Power reserve indicator