Swatch · Scuba Fifty Fathoms
Strap for Swatch Scuba Fifty Fathoms SO35L400
The Scuba Fifty Fathoms Blue Lagoon takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
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- 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 / 101
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 Swatch Scuba Fifty Fathoms SO35L400
What strap size does the Swatch Scuba Fifty Fathoms SO35L400 take?
The Swatch Scuba Fifty Fathoms SO35L400 needs 22 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Swatch Scuba Fifty Fathoms SO35L400 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 Swatch Scuba Fifty Fathoms SO35L400?
Yes, in 22 mm leather, as long as you don't wear it in the water: leather doesn't like the sea or the pool. For days in the water, rubber. On a 42 mm diver I go for a full-thickness strap, not a thin one.
Which strap do you recommend for the Swatch Scuba Fifty Fathoms SO35L400?
Rubber if you wear it in the water; otherwise a 22 mm calf strap, full thickness. You'll find it ready in the 22 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More Scuba Fifty Fathoms
- Scuba Fifty Fathoms Atlantic Ocean22 mm
- Scuba Fifty Fathoms Ocean of Storms22 mm
- Scuba Fifty Fathoms Green Abyss22 mm
- Scuba Fifty Fathoms Indian Ocean22 mm
- Scuba Fifty Fathoms Indian Ocean22 mm
- Scuba Fifty Fathoms Arctic Ocean22 mm
- Scuba Fifty Fathoms Pacific Ocean22 mm
- Scuba Fifty Fathoms Pacific Ocean22 mm
All Scuba Fifty Fathoms → Swatch families →
Every Scuba Fifty Fathoms reference with its measured lug width, on watchbands.ai →
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
