Grand Seiko · Evolution 9
Strap for Grand Seiko Evolution 9 SBGC251G
The Grand Seiko Evolution 9 SBGC251G takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
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- Ships in 1–3 working days
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- 30-day returns
- 12-month warranty on manufacturing defects
- Hand-stitched in Milan
Lug width

What length do I need?
Measure your wrist with a tailor's tape or a piece of string, comfortably snug.
| Wrist circumference | Length (long side / short side) |
|---|---|
| 15.0–16.4 cm | 120 / 70 mm |
| 16.5–17.8 cm | 125 / 75 mm |
| 17.9–19.0 cm | 130 / 80 mm |
| 19.1–20.3 cm | 135 / 85 mm |
| 20.4–21.6 cm | 140 / 85 mm |
| 21.7–22.9 cm | 145 / 90 mm |
The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.
What I'm asked about the Grand Seiko Evolution 9 SBGC251G
What strap size does the Grand Seiko Evolution 9 SBGC251G take?
The Grand Seiko Evolution 9 SBGC251G needs 23 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Grand Seiko Evolution 9 SBGC251G be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Grand Seiko Evolution 9 SBGC251G?
Yes, in 23 mm leather. On a case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Grand Seiko Evolution 9 SBGC251G?
A 23 mm calf strap, for every day. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.
More Evolution 9
- Grand Seiko Evolution 9 9-SLGA02323 mm
- Grand Seiko Evolution 9 9-SLGB00320 mm
- Grand Seiko Evolution 9 9-SLGB00520 mm
- Grand Seiko Evolution 9 9-SLGH02722 mm
- Grand Seiko Evolution 9 9-SLGW00720 mm
- Grand Seiko Evolution 9 SBGE283G22 mm
- Grand Seiko Evolution 9 SBGE285G22 mm
- Grand Seiko Evolution 9 SLGA00922 mm
More Grand Seiko in 23 mm
- Grand Seiko Sport 3-DAY-GMT-SBGE307Sport
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- Spring Drive Chronograph Titanium / Ceramic / White / Bracelet / Black Ceramics CollectionSpring Drive
For changing the strap
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
The atelier's website: casatimilano.com
