Illustration. The seconds hand sweeps, like the real movement.
Evolution 9 'White Birch'
Ref. SLGH005
40 mm, silvery-white 'White Birch' textured dial, steel bracelet
- Diameter
- 40 mm
- Thickness
- 11.7 mm
- Water
- 100 m
- Movement
- 9SA5
€10,000
German RRP on grand-seiko.com (de-de).
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Why it's interesting
The dial is the headline — a silvery relief of birch bark, after the forests around Grand Seiko's Shizukuishi studio — but the 9SA5 behind it is the real story: 36,000 vibrations an hour and still about 80 hours of reserve. If the Snowflake made Grand Seiko famous, this is the watch that showed where it was heading.
Watch DNA. Filled tags are editorial; outlined tags come from the specifications.
The numbers
Verified specificationsSize
- Diameter
- 40mm
- Lug to lug
- 47mm
- Thickness
- 11.7mm
- Lug width
- 22mm
Because you like this…
Chosen for shape, size, colour, character and price. Rarely the same brand twice.
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About this page
Verified specifications, checked September 2026
Dimensions, water resistance, movement and crystal were checked against the sources below.
All case figures (40.0 × 11.7 mm, 47.0 mm lug-to-lug, 22 mm band width, 10 bar, box-shaped sapphire, 178 g) from grand-seiko.com. Launch year 2021 per Fratello. Drawing: the irregular birch-bark relief is approximated with the vertical-stripes texture.
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.
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