Grand Seiko · Heritage
Strap for Grand Seiko Heritage STGF359
The Grand Seiko Heritage STGF359 takes 14 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

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 Heritage STGF359
What strap size does the Grand Seiko Heritage STGF359 take?
The Grand Seiko Heritage STGF359 needs 14 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Grand Seiko Heritage STGF359 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 Heritage STGF359?
Yes, in 14 mm leather. On a 28.9 mm dress watch alligator is the natural choice: thin, elegant, what it was born for.
Which strap do you recommend for the Grand Seiko Heritage STGF359?
A thin 14 mm alligator. 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.
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
