Omega · Speedmaster Moonwatch
Strap for Omega Speedmaster Moonwatch 311.33.42.30.01.001
The Speedmaster Professional Moonwatch Big Box / Strap takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Recommended spring bar
Straps for the Speedmaster Moonwatch 311.33.42.30.01.001
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Hammered Calfskin Strap Light Blue€98
Vintage Olive Green Calf Leather Watch Strap★ 4.5 · 4€80
What I'm asked about the Omega Speedmaster Moonwatch 311.33.42.30.01.001
What strap size does the Omega Speedmaster Moonwatch 311.33.42.30.01.001 take?
The Omega Speedmaster Moonwatch 311.33.42.30.01.001 needs 20 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.
Can the strap on the Omega Speedmaster Moonwatch 311.33.42.30.01.001 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 Speedmaster Moonwatch 311.33.42.30.01.001?
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 Speedmaster Moonwatch 311.33.42.30.01.001?
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.
The Speedmaster Moonwatch 311.33.42.30.01.001, seen from the bench
Frequently asked questions
What is the best material for a strap on the Speedmaster Moonwatch 311.33.42.30.01.001?
Alligator represents the most versatile and durable choice: fine natural grain, superior resistance and elegant ageing. For a sustainable choice, vegetable-tanned calf develops a fascinating patina over time. For sports use, NATO or FKM rubber straps offer practicality without aesthetic compromises. Shell cordovan is the premium choice for those seeking unique texture and extraordinary patina.
Must the strap on my Speedmaster Professional be compatible with a specific model?
Yes, but only for lug width: the 311.33.42.30.01.001 uses 20mm. Any artisanal strap with a 20mm lug width is fully compatible, regardless of brand. There are no constraints on length, total width or buckle: standardisation concerns exclusively the fastening pins. This allows maximum freedom in choosing materials, colours and finishes.
How long does a leather strap last on a Speedmaster Moonwatch worn daily?
The durability depends on the material and how it is tanned. A strap in alligator or shell cordovan with vegetable tanning lasts 3-5 years of daily wear, developing a beautiful and characteristic patina. A standard calf lasts 2-4 years. Vegetable tanning tends to age better than chrome tanning, as the leather remains alive and adapts to the wrist over time. To extend durability, it is advisable to rotate multiple straps and protect the leather from excessive moisture. Casati Milano offers an 18-month warranty on all artisanal straps.
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