Omega · Speedmaster Moonwatch

Strap for Speedmaster Professional Missions Apollo 10

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
Reference3597.14.00 (aka: 35971400)
FamilySpeedmaster Moonwatch
MovementOmega caliber 1861 Small Seconds, Hours, Minutes | Chronograph
CaseStainless Steel

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 3597.14.00 (aka: 35971400)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Speedmaster Moonwatch 3597.14.00 (aka: 35971400), seen from the bench

The Speedmaster Moonwatch represents the evolution of the Omega chronograph destined for space missions. It features the manual-winding caliber 1861 with chronograph, hour, minute and small second functions. The lugs measure 20mm in width.

Frequently asked questions

What is the exact lug width of the Omega Speedmaster Moonwatch 3597.14.00?

The lug width of the 3597.14.00 is 20mm. This measurement represents the distance between the two lugs on the case and is fundamental to ensure mechanical compatibility of the strap. A 20mm strap will fit perfectly into the case attachments, guaranteeing stability and correct aesthetics.

What is the best strap for the Omega Speedmaster Moonwatch 3597.14.00?

There is no single "best" choice, but three excellent options for different profiles: black alligator for pure elegance and practicality, shell cordovan for durability and natural patina over time, vegetable tanning for environmental sustainability without compromising quality. The rubber strap remains the most faithful choice to the original sporting heritage.

How do you change the strap on the Omega Speedmaster Moonwatch 3597.14.00?

The 3597.14.00 uses spring bar attachments (not an integrated deployant). Equip yourself with a spring bar tool, position the watch on a soft surface, compress the spring bar slightly with the tool to free it from its seat, remove the old strap, insert the new strap by aligning the spring bars to the guides, and press until you hear the click of locking. The operation takes 3-5 minutes per lug.

Which aftermarket strap is compatible with the Speedmaster Moonwatch 3597.14.00?

Any strap with a 20mm lug width is mechanically compatible with the 3597.14.00. For aesthetic compatibility, consider straps designed for vintage or contemporary sports chronographs with similar visual weight. Avoid ultra-thin straps that might appear disproportionate on the 42mm solid steel case.

How long does a leather strap last on an Omega Speedmaster Moonwatch 3597.14.00?

The lifespan depends on the type of leather and frequency of use. Alligator and shell cordovan guarantee 3-5 years of daily wear before requiring leather regeneration. Vegetable tanning ages faster but develops a desired patina; it lasts 2-4 years. Rubber lasts 2-3 years if regularly exposed to sun and chlorine. All straps can be regenerated or replaced while keeping the original spring bars.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only