Strap for Constellation Co-Axial 31 Stainless Steel / Red Gold / MOP

The lug width of the Omega Constellation 123.20.31.20.55.001 is 18mm. This dimension is essential for choosing a compatible strap. Physically verify the distance between the two lugs of the case before purchasing an aftermarket strap to avoid fitting errors.

For a Constellation with mother-of-pearl dial and two-tone rose gold and steel case, we recommend hazelnut alligator or vegetable-tanned calf leather. Alligator enhances the warmth of gold and creates an elegant contrast with the mother-of-pearl; natural calf leather offers sobriety with a patina that ennobles over time. Avoid glossy tones that would compete with the dial's luminosity.

To change the strap: remove the watch from your wrist, use a spring bar tool to depress the pin in one of the lugs, extract the old strap, repeat from the other lug. Insert the new strap with pins into the lugs, ensuring the pins are fully inserted. If you are unsure, contact an authorized Omega service center or a specialized watchmaker.

Yes, provided the lug width is exactly 18mm and the pin thickness matches the original Omega specifications. Always verify the technical specifications before purchase. Professional straps such as those from Milano Straps are tested for compatibility and preserve the aesthetic integrity of your Constellation.

The lifespan depends on the material and usage. Vegetable-tanned alligator lasts 5-7 years in daily use, developing a noble patina over time. Calf leather lasts 3-5 years. Rubber resists 4-6 years without aesthetic degradation. Milano Straps offers an 18-month warranty and maintenance support to extend your strap's life.