Grand Seiko
Grand Seiko Grand Seiko SBGH378 SBGH378
The Grand Seiko Grand Seiko SBGH378 (reference SBGH378) is a 38 mm yellow gold watch. It runs on the automatic caliber 9S85. It was introduced in 2026 and is still in production.
Specifications
Case
- Reference
- SBGH378
- Case size
- 38 mm
- Thickness
- 12.9 mm
- Case material
- Yellow gold
Movement
- Movement
- Automatic
- Caliber
- 9S85
Production
- Production
- 2026 – today (current)
Dial versions
This reference was made with these dials and finishes.
SBGH378
Blue boards pattern dial; limited status unknown
Quick answers
- What size is the Grand Seiko Grand Seiko SBGH378 SBGH378?
- The Grand Seiko Grand Seiko SBGH378 SBGH378 has a 38 mm case, 12.9 mm thick.
- What movement does the Grand Seiko Grand Seiko SBGH378 SBGH378 use?
- It uses the automatic caliber 9S85.
- Is the Grand Seiko Grand Seiko SBGH378 SBGH378 still in production?
- Yes, it is a current reference.
- When did the Grand Seiko Grand Seiko SBGH378 SBGH378 come out?
- It was introduced in 2026.
- What is the Grand Seiko Grand Seiko SBGH378 SBGH378 made of?
- The case is yellow gold.
Catalog facts checked October 2026.