Breitling · Transocean
Strap for Breitling Transocean A4131012.BC06.171A
The Transocean Chronograph 38 Black / Milanese takes 20 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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- 12-month warranty on manufacturing defects
- Hand-stitched in Milan
Lug width

Your watch with our straps









Calf, Orange
Grand Cavalier Leather Strap Orange
€120
★ 4.9 · 12
1 / 86
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 Breitling Transocean A4131012.BC06.171A
What strap size does the Breitling Transocean A4131012.BC06.171A take?
The Breitling Transocean A4131012.BC06.171A needs 20 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Breitling Transocean A4131012.BC06.171A 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 Breitling Transocean A4131012.BC06.171A?
Yes, in 20 mm leather. On a 38 mm chronograph I like box calf: it holds its shape and carries a substantial case.
Which strap do you recommend for the Breitling Transocean A4131012.BC06.171A?
A 20 mm box calf. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More Transocean
- Transocean Date Stainless Steel / Black / Bracelet22 mm
- Transocean Date Stainless Steel / Black / Calf / Pin22 mm
- Transocean Date Stainless Steel / Black / Croco / Pin22 mm
- Transocean Date Stainless Steel / Silver / Bracelet22 mm
- Transocean Stainless Steel / Silver / Calf / Pin22 mm
- Transocean Date Stainless Steel / Silver / Croco / Pin22 mm
- Transocean 38 Stainless Steel / MOP / Bracelet20 mm
- Transocean 38 Stainless Steel / Black / Bracelet20 mm
All Transocean → Breitling families →
Every Transocean reference with its measured lug width, on watchbands.ai →
More Breitling in 20 mm
- SuperOcean Deep SeaSuperocean
- Superocean Heritage '57 Stainless Steel / Black / MeshSuperocean Heritage '57
- Superocean Heritage '57 Stainless Steel / Calf / PinSuperocean Heritage '57
- Superocean Heritage '57 Stainless Steel / Calf / FoldingSuperocean Heritage '57
- Superocean Heritage '57 Stainless Steel / Blue / MeshSuperocean Heritage '57
- Superocean Heritage '57 Stainless Steel / Blue / Calf / FoldingSuperocean Heritage '57
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
