Swatch · MoonSwatch

Strap for MoonSwatch Mission to Moonphase Full Moon

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
ReferenceSO33W700
FamilyMoonSwatch
MovementETA caliber G10.212 AB ND Hours, Minutes, Small Seconds | Chronograph, Rattrapante
CaseBioceramic

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the MoonSwatch SO33W700

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The MoonSwatch SO33W700, seen from the bench

The Swatch MoonSwatch SO33W700 is a bioceramic reinterpretation of the legendary Omega Speedmaster Professional, featuring a 42mm case and ETA caliber G10.212 AB ND quartz movement with split-seconds chronograph function. The 20mm lug width requires careful aftermarket strap selection to ensure proper fit. This distinctive lug size was deliberately chosen by Swatch to achieve harmonious proportions on the 42mm case, avoiding the bulkiness of 22mm or the inadequacy of 18mm lugs.

Frequently asked questions

What is the lug width of the Swatch MoonSwatch SO33W700?

The Swatch MoonSwatch SO33W700 features a lug width of 20mm. This dimension is specific to this model and does not conform to contemporary standards (18mm or 22mm), making it essential to source straps measured accurately between the case lugs.

Which strap is most suitable for the Swatch MoonSwatch SO33W700?

The SO33W700 deserves a strap that balances sophistication with chronograph functionality. We recommend alligator or crocodile for formal elegance, vegetable-tanned calf for natural ageing and organic patina development, NATO straps for authentic sportiness, FKM rubber for technical and daily applications. Your choice depends on intended use and aesthetic dialogue with the bioceramic case.

How do you change the strap on a Swatch MoonSwatch SO33W700?

Strap replacement requires a spring bar tool (purpose-designed implement) to remove the metal pins securing the strap to the case. Position the tool beneath the pin, lift gently until the pin disengages, repeat on the opposite lug. Insert the new strap by aligning the holes with the pins and pressing until engagement. No specialised tools beyond the spring bar tool are required.

Which aftermarket straps are compatible with the Swatch MoonSwatch SO33W700?

Any strap featuring a 20mm lug width is compatible with the SO33W700, regardless of material or brand. Milano Straps offers a curated selection of 20mm straps in leather (alligator, calf), textiles (NATO, paracord) and rubber, all measured to international standards and tested for precise fit.

How long does a leather strap last on a Swatch MoonSwatch SO33W700?

The durability of a leather strap depends on tanning method, material quality and frequency of use. Vegetable-tanned calf of high quality has an average lifespan of 3-5 years with daily wear; premium alligator or crocodile can last 5-7 years or longer. Patina and natural ageing are desirable characteristics, not defects: they indicate material authenticity and beauty acquired over time.

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