Omega · Speedmaster Moonwatch

Strap for Speedmaster Professional Moonwatch Stainless Steel / Panda / Tokyo Olympics / Set

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
Reference522.30.42.30.04.002 (aka: 52230423004002)
FamilySpeedmaster Moonwatch
MovementOmega caliber 1861 small seconds, hours, minutes | Chronograph
Year2018
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 522.30.42.30.04.002 (aka: 52230423004002)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Speedmaster Moonwatch 522.30.42.30.04.002 (aka: 52230423004002), seen from the bench

The Speedmaster Moonwatch was introduced in 1957 and represents one of Omega's most iconic chronograph lines. The model is powered by the manual-winding caliber 1861 with hour, minute, small seconds, and chronograph functions. The case features 20mm lugs and maintains the classic proportions of the Speedmaster collection.

Frequently asked questions

What is the lug width of the Omega Speedmaster Moonwatch 522.30.42.30.04.002?

The lug width for this model is 20mm. This measurement indicates the distance between the case attachment pins and determines complete compatibility of replacement straps. It is essential to measure correctly before ordering to ensure perfect installation.

What is the best strap for the Speedmaster Moonwatch 522.30.42.30.04.002?

The choice depends on your use and aesthetic preference. Alligator represents the most refined choice with vegetable tanning, guaranteeing evolving patina over time. Shell cordovan is ideal for those seeking exceptional durability and natural shine. Nappa calf offers immediate comfort and versatility. For sport pairings, rubber or NATO straps guarantee practicality without compromise.

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

To change the strap you need specific tools: a springbar tool (thin flat-head screwdriver) and a stable work surface. Insert the tip under the pin (springbar), gently lift to release tension, and extract the pin from the case. Repeat the operation on the other side. For mounting the new strap, reverse the process. If you are not experienced, we recommend assistance from the Casati Milano atelier.

Which aftermarket straps are compatible with the Speedmaster Moonwatch ref. 522.30.42.30.04.002?

Any strap with a 20mm lug width is perfectly compatible. milanostraps.it offers a dedicated collection of straps in alligator, calf, shell cordovan and rubber, all calibrated for this measurement. The Casati Milano atelier also creates custom personalized straps with choice of leathers and stitch finishing.

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

The durability of a leather strap depends on leather quality, frequency of use and environmental conditions. An alligator or shell cordovan strap with vegetable tanning can last 5-8 years of daily use. Nappa calf generally has a lifespan of 3-5 years. milanostraps.it and Casati Milano straps include an 18-month warranty and can be regenerated or replaced according to your needs.

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