Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Moonshine Gold - Diamond / MOP Supernova

The lug width of the Omega Constellation 131.55.29.20.55.003 is 18 millimetres. This dimension is measured internally between the two metal lugs of the case. It is critical to verify this measurement with a digital calliper before ordering an aftermarket strap, as even a 2mm difference would significantly alter the aesthetic balance of the 29mm case.

For Moonshine Gold we recommend alligator in dark tones (black, dark brown, cognac) which creates an elegant contrast with the warmth of the gold without competing visually. Shell cordovan in cognac or burgundy evolves chromatically over time, developing a deep patina. A vegetable-tanned calf leather in light chestnut tone offers tactile lightness. For contemporary use, a dark grey silk NATO or an FKM rubber strap represent functional alternatives.

The change is made using a pin tool or a dedicated spring bar tool. Insert the tip into the lateral hole of the case, depress the internal spring of the lug, and extract the old strap. Position the new strap by aligning the holes to the lugs, and allow the spring to close. We recommend performing this operation on a soft surface (microfibre mat or cloth) to avoid scratches to the Moonshine Gold case.

Yes, any strap with an 18mm lug width is mechanically compatible. However, aesthetic compatibility depends on material, colour and thickness. We recommend verifying that the strap thickness does not exceed 4-4.5mm, to avoid a bulky proportion relative to the 29mm case. The Casati Milano atelier creates bespoke straps that respect these optical proportions.

The lifespan varies according to material and use. A quality alligator offers 3-4 years of daily wear before requiring replacement; shell cordovan 4-5 years, thanks to its density and resilience. A vegetable-tanned calf leather lasts on average 2-3 years, as natural tanning is less water-repellent. All Milano Straps straps benefit from an 18-month warranty and can be subjected to regeneration treatments (cleaning, hydration) to extend their useful life.