Omega · Seamaster 120M
Strap for Omega Seamaster 120M TR 378.0885
The Seamaster Polaris Titane / Pink Gold / Chronograph takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
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Lug width
Recommended spring bar
Straps for the Seamaster 120M TR 378.0885
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 | 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 Omega Seamaster 120M TR 378.0885
What strap size does the Omega Seamaster 120M TR 378.0885 take?
The Omega Seamaster 120M TR 378.0885 needs 20 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Omega Seamaster 120M TR 378.0885 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 Omega Seamaster 120M TR 378.0885?
Yes, in 20 mm leather. On a 42 mm chronograph I like box calf: it holds its shape and carries a substantial case.
Which strap do you recommend for the Omega Seamaster 120M TR 378.0885?
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 Seamaster 120M
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- Seamaster 120M Automatic 36.25 Yellow Gold / Diamond / Champagne18 mm
- Seamaster 120M Automatic 36.25 Yellow Gold / Diamond / Champagne18 mm
- Seamaster 120M Automatic 36.25 Yellow Gold / Diamond / Champagne18 mm
- Seamaster 120M Automatic 36.25 Yellow Gold / Diamond / White18 mm
All Seamaster 120M → Omega families →
Every Seamaster 120M reference with its measured lug width, on watchbands.ai →
More Omega in 20 mm
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