Grand Seiko
Grand Seiko Heritage Spring Drive sunburst midnight blue SBGA439
The Grand Seiko Heritage Spring Drive sunburst midnight blue (reference SBGA439) is a 40 mm stainless steel watch with a blue dial. It runs on the spring Drive caliber 9R65 with a 72-hour power reserve.
Specifications
Case
- Reference
- SBGA439
- Case size
- 40 mm
- Case material
- Stainless steel
Dial and bezel
- Dial
- Blue
Movement
- Movement
- Spring Drive
- Caliber
- 9R65
- Power reserve
- 72 hours
- Jewels
- 30
Dial versions
This reference was made with these dials and finishes.
SBGA439 Blue
Sunburst midnight blue
Quick answers
- What size is the Grand Seiko Heritage Spring Drive sunburst midnight blue SBGA439?
- The Grand Seiko Heritage Spring Drive sunburst midnight blue SBGA439 has a 40 mm case.
- What movement does the Grand Seiko Heritage Spring Drive sunburst midnight blue SBGA439 use?
- It uses the spring drive caliber 9R65, with a 72-hour power reserve.
- What is the Grand Seiko Heritage Spring Drive sunburst midnight blue SBGA439 made of?
- The case is stainless steel.
Catalog facts checked November 2026.