Watch
by Grand Seiko
Grand Seiko STGK031
Heritage · STGK031
- Case
- 30 mm
- Thickness
- 10.5 mm
- Lug width
- 15 mm
- Crystal
- Sapphire
- Market price
- $6,600
Updated 11 November 2026
About this watch
The Grand Seiko STGK031 is a 30 mm watch from the Heritage collection. Its stainless steel case is 10.5 mm thick and 36.2 mm from lug to lug, with 15 mm lugs. It is water resistant to 100 m. The crystal is sapphire.
The manufacturer’s list price is US$6,600. It comes in 2 versions.
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