What are the case specifications of the Grand Seiko Heritage?

The Grand Seiko Heritage features a 40mm diameter, 14mm thick, Steel case with a sapphire crystal crystal.

What is the water resistance of the Grand Seiko Heritage?

The Grand Seiko Heritage has a water resistance rating of 100m (swimming).

What movement does the Grand Seiko Heritage use?

The Grand Seiko Heritage is powered by a Automatic, caliber 9S86, 55h power reserve.

Grand Seiko Heritage

AutomaticSteel

Ref. SBGJ263

Collection: HeritageCase size: 40mmMovement: 9S86

The Grand Seiko Heritage, reference SBGJ263, is a GMT watch with a 40 mm steel case. The dial is covered by a dual-curved sapphire crystal with an inner anti-reflective coating. Self-winding calibre 9S86 has 37 jewels and approximately 55 hours of power reserve. Case thickness is 14 mm, with a lug-to-lug measurement of 46.2 mm; water resistance is rated to 100 metres. This model has a date display and a see-through case back. The watch has a steel bracelet with a folding clasp with push button release. The Mount Iwate dial pattern evokes the surfaces of the peak visible from Grand Seiko Studio Shizukuishi.

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Last updated 9 Oct 2026Suggest a correction