Omega · Speedmaster Moonwatch

Strap for Speedmaster Professional Missions Skylab 2

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
Reference3597.22.00 (aka: 35972200)
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 3597.22.00 (aka: 35972200)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Speedmaster Moonwatch 3597.22.00 (aka: 35972200), seen from the bench

The Speedmaster Professional 3597.22.00 is a legendary chronograph that accompanied Buzz Aldrin to the Moon in 1969, equipped with the manual-wound Omega caliber 1861 movement. The 42mm stainless steel case features a black glossy dial with applied gold indices, three subdials, curved anti-scratch sapphire crystal, and water resistance to 300 meters. The 20mm lug width is critical for this reference; the lugs are straight without pronounced angles and accept straps of precise width.

Frequently asked questions

What is the exact lug width of the Omega Speedmaster Moonwatch 3597.22.00?

The lug width of reference 3597.22.00 is 20 millimetres. This measurement is critical for compatibility: do not use 19mm or 21mm straps, as the spring bars would be either too tight or too loose. Verify with a digital calliper positioned perpendicular to the internal spring bar lugs of the case.

What is the best strap for the Speedmaster Moonwatch 3597.22.00?

There is no single "best" strap in absolute terms—it depends on your intended use. For formal elegance: black alligator with deployant clasp. For robust daily wear: vulcanised military rubber or grey-green NATO. For enduring luxury: shell cordovan. For aesthetic-practical balance: vegetable-tanned calf in deep brown tones. The satin black dial naturally complements dark materials and restrained textures.

How do you change the strap on the Omega Speedmaster Moonwatch 3597.22.00?

The 3597.22.00 is fitted with standard straight lugs. Use a dedicated spring bar remover tool or the tip of a flat knife to gently lift the internal springs of the lugs. Remove the old strap without forcing. Position the new strap aligned with the lugs, push the springs downward until they click into place. No professional watchmaker tools are required. Atelier Casati Milano offers fitting service if you prefer to have it done professionally.

Is an aftermarket strap compatible with the 3597.22.00 reference?

Yes, provided it is specifically 20mm lug width. Always verify that the manufacturer specifies "20mm lug width" and not total case width in millimetres. Our artisanal straps on milanostraps.it are designed for the Omega Speedmaster Moonwatch: perfectly dimensioned lugs, absence of lateral play, smooth transition across the 42mm case curve.

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

Durability depends on material and maintenance. Alligator and vegetable-tanned calf last 3–5 years with daily wear and regular care (quarterly cleaning, annual conditioning). Shell cordovan reaches 10–15 years, drying naturally at a faster rate. Canvas NATO straps last indefinitely if dried after exposure to perspiration. Casati Milano offers an 18-month guarantee on all artisanal straps, with restoration or replacement options available.

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