Omega · Speedmaster Moonwatch

Strap for Omega Speedmaster Moonwatch 310.60.42.50.10.001

The Speedmaster Professional Moonwatch 3861 Moonshine Gold / Green / Bracelet 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 width20 mm
Case diameter42 mm
Reference310.60.42.50.10.001 (aka: 31060425010001)
FamilySpeedmaster Moonwatch
MovementOmega caliber 3861 Small seconds, Hours, Minutes | Chronograph | Chronometer
Year2022
CaseCeramic, Moonshine Gold

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Speedmaster Moonwatch 310.60.42.50.10.001

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

What I'm asked about the Omega Speedmaster Moonwatch 310.60.42.50.10.001

What strap size does the Omega Speedmaster Moonwatch 310.60.42.50.10.001 take?

The Omega Speedmaster Moonwatch 310.60.42.50.10.001 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 310.60.42.50.10.001 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 310.60.42.50.10.001?

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 310.60.42.50.10.001?

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 310.60.42.50.10.001, seen from the bench

The Speedmaster Professional Moonwatch model 310.60.42.50.10.001 in Ceramic Moonshine Gold is the only chronograph certified by NASA for extravehicular operations (EVA), a status achieved in 1965 and never revoked. The 42mm ceramic case houses the Omega 3861 calibre, a manual-wind movement with silicon escapement and master coaxial precision (±0/-2 seconds per day) and 54-hour power reserve. The 20mm lug width is standard for modern 42mm Speedmaster models, measured between the spring bar lugs where the strap attaches.

Frequently asked questions

What is the best strap material for the Speedmaster Moonwatch Ceramic Moonshine Gold?

For Moonshine Gold, we recommend alligator with vegetable tanning in warm colors (brown, cognac, toffee), which enhances the golden tone of the case without competing visually. Burgundy shell cordovan is an elegant and durable alternative. Natural grain calf in off-neutral tones (hazelnut, sand) is perfect for a softer aesthetic. Avoid pure black, which appears too cold and disharmonious with the gold.

Which aftermarket straps are compatible with the Omega Speedmaster Moonwatch 310.60.42.50.10.001?

Any strap with a 20mm lug width is compatible with your Speedmaster. Online you will find straps of different quality: from low-cost pressed leather straps to artisanal alligator or cordovan straps. milanostraps.it offers a selection of 20mm straps in authentic leather, customizable for length, initials, and stitching thread color. The Casati Milano atelier creates custom straps with hand-selected leathers and an 18-month warranty.

How long does a leather strap last on a watch like the Speedmaster Moonwatch?

The lifespan of a leather strap depends on the quality of the leather, frequency of use, and environmental conditions. An artisanal alligator or shell cordovan strap with vegetable tanning can last 4-7 years if worn daily on a Speedmaster. Ordinary calf leather has an average life of 2-4 years. Exposure to moisture, direct heat, and sweat accelerates wear. A high-quality strap with proper finishing develops an aesthetic patina over time, increasing the collectible value of the watch. Casati Milano's 18-month warranty covers manufacturing defects and stitching issues.

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