Illustration. The seconds hand sweeps, like the real movement.
Evolution 9 Spring Drive 5 Days 'Lake Suwa'
Ref. SLGA021
Also SLGA021G
Deep blue wave-textured dial, steel bracelet
2 versions of the Evolution 9 Collection
- Diameter
- 40 mm
- Thickness
- 11.8 mm
- Water
- 100 m
- Movement
- 9RA2
€10,000
German RRP on grand-seiko.com (de-de).
- 0 owners
- 0 want it
- 0 reviews
Why it's interesting
The dial is a dark blue relief of wind-rippled water, named for Lake Suwa near the studio where Spring Drive watches are made. Behind it, the 9RA2 stores five days of power and moves its reserve display to the case back, which is how a 40 mm Evolution 9 case stays at 11.8 mm.
Watch DNA. Filled tags are editorial; outlined tags come from the specifications.
The numbers
Verified specificationsSize
- Diameter
- 40mm
- Lug to lug
- 47.9mm
- Thickness
- 11.8mm
- Lug width
- 22mm
Also in the Evolution 9 Collection family
Because you like this…
Chosen for shape, size, colour, character and price. Rarely the same brand twice.
From owners
0 owners, 0 reviews and 0 comments.
Reviews
No reviews yet. If you own one, how does it wear?
Discussion
No conversation yet. Ask owners how it wears, or tell them what drew you to it.
About this page
Verified specifications, checked September 2026
Dimensions, water resistance, movement and crystal were checked against the sources below.
Case (40.0 × 11.8 mm, 47.9 mm lug-to-lug, 22 mm band), dual-curved sapphire, 10 bar, 176 g and EUR 10,000 from grand-seiko.com. Monochrome (26 January 2023) confirms a screw-down crown, a sapphire case back and that it's a non-limited model, available from February 2023. Chosen over the SLGA009 because its dial is distinct from the SLGH005 'White Birch' already in the catalogue.
The illustration is a bezelga rendering generated from the specifications. It is not a photograph and may simplify details such as logos, text and finishing.
No licensed photography yet.
