Strap for MoonSwatch Mission to the Moon Moonshine Gold Beaver Moon

The lug width of the Swatch MoonSwatch SO33M102-111 is 20 millimetres. This measurement represents the horizontal distance between the two spring bar pins where the strap is fitted. It is a classic standard for sports and pilot watches with cases exceeding 40mm, ensuring balanced proportions.

The best strap depends on your aesthetic intention. For an elegant approach, we recommend alligator leather in dark brown or black, which contrasts beautifully with the bioceramic. For a sport-casual style faithful to the watch's origins, a NATO strap in heavy canvas or a vulcanised rubber strap maintains its playful character. Vegetable-tanned calf leather represents the ideal compromise between craftsmanship and natural ageing.

Strap replacement requires a spring bar removal tool. Gently insert the tool's tip under the spring bar pin, applying light lateral pressure to compress the internal mechanism, then extract the pin. Repeat on the other side. Insert the new 20mm strap by sliding the bar through the lugs, ensuring it is fully locked in place.

Yes, any strap with a 20mm lug width is compatible. MilanoStraps offers a complete collection of bespoke straps in leather, alligator, NATO, and rubber, all available for the 20mm size. Always ensure your strap is exactly 20mm: 18mm or 22mm straps will not seat correctly.

A high-quality bespoke leather strap with vegetable tanning and professional finishing typically lasts 3–5 years under normal wear conditions (worn 4–5 days per week). Longevity depends on care: avoid prolonged moisture, protect from excessive perspiration, and clean regularly with a soft brush to extend the strap's life. Some vegetable-tanned calf leathers develop a fascinating patina after the first year of use.