Strap for MoonSwatch Mission to Earthphase

The Swatch MoonSwatch SO33M700 features a 20-millimetre lug width. This measurement reflects the proportional relationship between the case diameter (42mm) and wrist attachment. The measurement is taken as the internal distance between the two spring bars that support the strap, measured centre-to-centre.

The choice depends on intended use. For formal elegance, we recommend an alligator strap with vegetable tanning or vegetable-tanned calf. For sports practicality, a NATO strap in Cordura fabric remains the most authentic and versatile choice. A shell cordovan strap offers extraordinary durability with natural patina development over time. For intense daily use, vulcanised rubber guarantees maximum water resistance and minimal maintenance.

The SO33M700 uses standard spring bars. Insert a dedicated spring bar tool underneath the pin from the lug interior to compress the spring. Once compressed, the pin releases from the hole. Repeat on the other side. To install the new strap, align the pins with the holes and allow the spring to reposition naturally. Ensure both pins are firmly seated in the holes before wearing the watch.

Absolutely. The SO33M700 is compatible with any strap featuring a 20mm lug width. MilanoStraps offers an extensive selection of artisanal straps in leather, NATO, and rubber, all tested for compatibility and build quality. Always verify that your chosen strap is specifically dimensioned for 20mm to avoid mounting issues.

Longevity depends on tanning quality and leather type. A high-quality vegetable-tanned calf or shell cordovan strap resists 5-8 years with daily use. Vegetable-tanned leather develops a natural patina that improves aesthetics over time. Factors such as sun exposure, humidity, and constant sweat contact accelerate ageing. Regular maintenance (gentle cleaning, annual conditioning) significantly extends strap lifespan.