Grand Seiko · Quartz
Strap for Grand Seiko Quartz SBGX209
The Quartz Stainless Steel / Cream / Strap takes 18 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
- Worldwide shipping
- 30-day returns
- 12-month warranty on manufacturing defects
- Hand-stitched in Milan
Lug width

Your watch with our straps









Calf, Brown
Vintage Brown Calfskin Strap — Natural Patina
€98
★ 4.9 · 11
1 / 58
Real photos of the strap and the case. No generated images.
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 | 110 / 70 mm |
| 16.5–17.8 cm | 115 / 75 mm |
| 17.9–19.0 cm | 120 / 80 mm |
| 19.1–20.4 cm | 125 / 80 mm |
| 20.5–21.6 cm | 130 / 85 mm |
| 21.7–22.9 cm | 135 / 85 mm |
| over 22.9 cm | on request |
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 Quartz SBGX209
What strap size does the Grand Seiko Quartz SBGX209 take?
The Grand Seiko Quartz SBGX209 needs 18 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Grand Seiko Quartz SBGX209 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 Quartz SBGX209?
Yes, in 18 mm leather. On a 37 mm case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Grand Seiko Quartz SBGX209?
A 18 mm calf strap, for every day. You'll find it ready in the 18 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More Quartz
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- Quartz Titanium / Silver / Bracelet20 mm
- Quartz Titanium / Black / Bracelet20 mm
- Quartz Titanium / Blue / Bracelet20 mm
- Quartz Date Stainless Steel / Blue / Bracelet19 mm
- Quartz Date Stainless Steel / Black / Bracelet19 mm
- Quartz Date Stainless Steel / Yellow Gold / Caliber 9F 25th Anniversary Limited Edition19 mm
- Quartz Date Stainless Steel / Yellow Gold / Silver / Bracelet18 mm
All Quartz → Grand Seiko families →
Every Quartz reference with its measured lug width, on watchbands.ai →
More Grand Seiko in 18 mm
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
