What are the case specifications of the Grand Seiko Heritage?

The Grand Seiko Heritage features a 41mm diameter, 12.5mm 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 Spring Drive, caliber 9R65, 72h power reserve.

Grand Seiko Heritage

Spring DriveSteel

Ref. SBGA469

Collection: HeritageCase size: 41mmMovement: 9R65

The Grand Seiko Heritage, reference SBGA469, is a Spring Drive watch with a 41 mm steel case. Approximately 72 hours of power reserve is provided by Spring Drive calibre 9R65, with 30 jewels. The dial is covered by a dual-curved sapphire crystal with an inner anti-reflective coating. The steel bracelet has a folding clasp with push button release. The watch has a date display, a power reserve indicator, and a see-through case back. The 12.5 mm case thickness accompanies a lug-to-lug measurement of 49 mm; water resistance is rated to 100 metres. The dial has a texture inspired by the natural pattern of solid rock.

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Last updated 9 Oct 2026Suggest a correction