Grand Seiko
Grand Seiko Evolution 9 Spring Drive 5 Days Diver SLGA015
The Grand Seiko Evolution 9 Spring Drive 5 Days Diver (reference SLGA015) is a 43.8 mm High-intensity titanium watch with a black (Kuroshio pattern) dial. It runs on the spring Drive caliber 9RA5 with a 120-hour power reserve and is water resistant to 200 m.
Specifications
Case
- Reference
- SLGA015
- Collection
- Evolution 9
- Case size
- 43.8 mm
- Thickness
- 13.8 mm
- Case material
- High-intensity titanium
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 200 m
- Bracelet / strap
- High-intensity titanium bracelet
Dial and bezel
- Dial
- Black (Kuroshio pattern)
- Bezel
- Unidirectional rotating dive bezel
Movement
- Movement
- Spring Drive
- Caliber
- 9RA5
- Power reserve
- 120 hours
- Functions
- Date, Dive bezel
Production
- Production
- Current
How it compares within the Evolution 9 family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| SLGA015 (This watch) | 43.8 mm | High-intensity titanium | Black (Kuroshio pattern) | 9RA5 | — |
| SLGA019 | 40 mm | High-intensity titanium | Blue (Lake Suwa pattern) | 9RA2 | — |
| SLGA021 | 40 mm | Stainless steel | Blue (Lake Suwa pattern) | 9RA2 | — |
| SLGB023 | 40.8 mm | High-intensity titanium | Blue | 9RB1 | — |
| SLGB025 | 40.8 mm | High-intensity titanium | Green | 9RB1 | — |
| SLGC001 | 43.2 mm | High-intensity titanium | Blue | 9SC5 | 2023– |
| SLGC007 | 43.2 mm | Titanium | Icy blue | 9SC5 | 2025– |
| SLGH005 | 40 mm | Stainless steel | White (White Birch pattern) | 9SA5 | 2021– |
| SLGW003 | 38.6 mm | Brilliant Hard Titanium | White (birch pattern) | 9SA4 | — |
About the Evolution 9 family
Evolution 9 is the design language Grand Seiko introduced in 2020, alongside the high-beat caliber 9SA5, as a modern development of the Grand Seiko Style: a thinner bezel, wider hour and minute hands and a lower, more comfortable case. It became a collection in its own right and now covers mechanical, Spring Drive and chronograph models.
The catalog includes references with the 9SA4 and 9SA5 mechanical calibers, the 9RA2 and 9RA5 Spring Drive calibers and the 9RB family, in steel, Ever-Brilliant Steel, high-intensity titanium and platinum. Nature-themed dials such as the white birch texture are a large part of their appeal.
Quick answers
- What size is the Grand Seiko Evolution 9 Spring Drive 5 Days Diver SLGA015?
- The Grand Seiko Evolution 9 Spring Drive 5 Days Diver SLGA015 has a 43.8 mm case, 13.8 mm thick.
- What movement does the Grand Seiko Evolution 9 Spring Drive 5 Days Diver SLGA015 use?
- It uses the spring drive caliber 9RA5, with a 120-hour power reserve.
- How water resistant is the Grand Seiko Evolution 9 Spring Drive 5 Days Diver SLGA015?
- It is water resistant to 200 metres.
- Is the Grand Seiko Evolution 9 Spring Drive 5 Days Diver SLGA015 still in production?
- Yes, it is a current reference.
- What is the Grand Seiko Evolution 9 Spring Drive 5 Days Diver SLGA015 made of?
- The case is High-intensity titanium. Bracelet or strap: High-intensity titanium bracelet.
Catalog facts checked September 2026.