Doxa · SUB 300
Strap for Doxa SUB 300 Sub 300 Beta Caribbean
The Doxa SUB 300 Sub 300 Beta Caribbean 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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- 30-day returns
- 12-month warranty on manufacturing defects
- Hand-stitched in Milan
Lug width

Straps for the SUB 300 Sub 300 Beta Caribbean
Selected for the 20 mm lug width · workshop selection
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 Doxa SUB 300 Sub 300 Beta Caribbean
What strap size does the Doxa SUB 300 Sub 300 Beta Caribbean take?
The Doxa SUB 300 Sub 300 Beta Caribbean needs 20 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Doxa SUB 300 Sub 300 Beta Caribbean 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 Doxa SUB 300 Sub 300 Beta Caribbean?
Yes, in 20 mm leather. On a case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Doxa SUB 300 Sub 300 Beta Caribbean?
A 20 mm calf strap, for every day. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More Doxa in 20 mm
- Doxa DOXA Army Army, Bronze BezelDOXA Army
- Doxa DOXA Army Army, Stainless Steel BezelDOXA Army
- Doxa SUB 200 Sub 200 C-Graph AquamarineSUB 200
- Doxa SUB 200 Sub 200 C-Graph II AquamarineSUB 200
- Doxa Sub 200 T.Graph IISub 200 T.Graph II
- Doxa SUB 300 Ti5 Clive CusslerSUB 300 Ti5 Clive Cussler
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





