Grand Seiko · Mechanical
Strap for Grand Seiko Mechanical SBGM221
The Automatic Hi Beat 36000 GMT Stainless Steel / Silver / Strap takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
- 4.8 out of 5 · 269 reviews
- 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 | 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 Mechanical SBGM221
What strap size does the Grand Seiko Mechanical SBGM221 take?
The Grand Seiko Mechanical SBGM221 needs 19 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Grand Seiko Mechanical SBGM221 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 Mechanical SBGM221?
Yes, in 19 mm leather. On a 40 mm case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Grand Seiko Mechanical SBGM221?
A 19 mm calf strap, for every day. You'll find it ready in the 19 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More Mechanical
- Automatic Hi Beat 36000 Stainless Steel / White / Bracelet20 mm
- Automatic Hi Beat 36000 Stainless Steel / Black / Bracelet20 mm
- Automatic Hi Beat 36000 Stainless Steel / Ivory Arabic / Strap19 mm
- Automatic Hi Beat 36000 Special White Gold / White / Strap19 mm
- Automatic Hi Beat 36000 Special Yellow Gold / White / Strap19 mm
- Automatic Hi Beat 36000 Special Pink Gold / White / Strap19 mm
- Automatic Hi Beat 36000 Titanium/ White / Bracelet19 mm
- Automatic Hi Beat 36000 Titanium/ Black / Bracelet19 mm
All Mechanical → Grand Seiko families →
Every Mechanical reference with its measured lug width, on watchbands.ai →
More Grand Seiko in 19 mm
- Grand Seiko Heritage 45GS-SLGW005Heritage
- Spring Drive Stainless Steel / White / BraceletSpring Drive
- Spring Drive Stainless Steel / Black / BraceletSpring Drive
- Spring Drive Stainless Steel / Black / BraceletSpring Drive
- Spring Drive Stainless Steel / Blue / BraceletSpring Drive
- Spring Drive Stainless Steel / Black / BraceletSpring 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