Grand Seiko
Grand Seiko Heritage Spring Drive 40 (44GS) SBGA415
The Grand Seiko Heritage Spring Drive 40 (44GS) (reference SBGA415) is a 40 mm High-intensity titanium watch with a light grey (Taisetsu) dial. It runs on the spring Drive caliber 9R65 with a 72-hour power reserve and is water resistant to 100 m.
Specifications
Case
- Reference
- SBGA415
- Collection
- Heritage
- Case size
- 40 mm
- Thickness
- 12.8 mm
- Case material
- High-intensity titanium
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 100 m
- Bracelet / strap
- High-intensity titanium bracelet
Dial and bezel
- Dial
- Light grey (Taisetsu)
- Bezel
- Fixed
Movement
- Movement
- Spring Drive
- Caliber
- 9R65
- Power reserve
- 72 hours
- Jewels
- 30
- Functions
- Date, Power reserve indicator
Production
- Production
- Current
Dial versions
This reference was made with these dials and finishes.
SBGA415 Light grey (Taisetsu)
Light grey (Taisetsu)
SBGA415 Light gray
Taisetsu (winter Shinshu)
How it compares within the Heritage family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| SBGA415 (This watch) | 40 mm | High-intensity titanium | Light grey (Taisetsu) | 9R65 | — |
| SBGA211 | 41 mm | High-intensity titanium | White Snowflake pattern | 9R65 | 2017– |
| SBGA413 | 40 mm | High-intensity titanium | Pink (Shunbun / hana-ikada) | 9R65 | 2020– |
| SBGH351 | 40 mm | Ever-Brilliant Steel | Green | 9S85 | 2025– |
| SBGH353 | 40 mm | Ever-Brilliant Steel | Silver | 9S85 | 2025– |
| SBGH368 | 38 mm | 18k rose gold | Silver | 9S85 | 2025– |
| SLGW007 | 38.6 mm | Stainless steel | Navy | 9SA4 | 2025– |
| STGK031 | 30 mm | Stainless steel | Light pink | 9S27 | 2025– |
| STGK033 | 30 mm | Stainless steel | Silver | 9S27 | 2025– |
About the Heritage family
Heritage is Grand Seiko's collection rooted in its classic 1960s designs, especially the 44GS and 62GS. It keeps the sharp facets, flat polished surfaces and clean dials of the Grand Seiko Style, in a wide range of sizes and movements.
The catalog includes mechanical models with 9S and 9SA calibers, Spring Drive with 9R and 9RA calibers, and quartz with the 9F, in steel, Ever-Brilliant Steel, high-intensity titanium and gold. With so many dial variations and limited editions, confirm the exact reference, and check the case edges for polishing.
Quick answers
- What size is the Grand Seiko Heritage Spring Drive 40 (44GS) SBGA415?
- The Grand Seiko Heritage Spring Drive 40 (44GS) SBGA415 has a 40 mm case, 12.8 mm thick.
- What movement does the Grand Seiko Heritage Spring Drive 40 (44GS) SBGA415 use?
- It uses the spring drive caliber 9R65, with a 72-hour power reserve.
- How water resistant is the Grand Seiko Heritage Spring Drive 40 (44GS) SBGA415?
- It is water resistant to 100 metres.
- Is the Grand Seiko Heritage Spring Drive 40 (44GS) SBGA415 still in production?
- Yes, it is a current reference.
- What is the Grand Seiko Heritage Spring Drive 40 (44GS) SBGA415 made of?
- The case is High-intensity titanium. Bracelet or strap: High-intensity titanium bracelet.
- Which dials was the Grand Seiko Heritage Spring Drive 40 (44GS) SBGA415 made with?
- The catalog lists 2 dials: Light grey (Taisetsu), Light gray.
Catalog facts checked September 2026.