Strap for Constellation Co-Axial 35 Red Gold / Brown

The lug width of the Omega Constellation 123.50.35.20.13.001 is 20 millimetres. This is the distance between the spring bars (lateral attachments) of the case. It is essential to verify this measurement before purchasing an aftermarket strap to ensure perfect compatibility and no excessive play.

For a rose gold Constellation, alligator is the most elegant choice: dark brown, cognac or taupe create sophisticated contrasts. Shell cordovan offers a natural waxy patina that ages beautifully. For those desiring versatility, vegetable-tanned calf guarantees softness and longevity. FKM rubber is ideal for casual contexts without compromising the aesthetic value of the precious case.

To change the strap, you have two options: consult a qualified watchmaker (recommended method for luxury watches) or use a spring bar removal tool. Locate the lateral spring bars, apply gentle pressure and slide the strap out. Insert the new strap by aligning the spring bars into the attachments and compress until it clicks into position. Verify that the strap is aligned with the case.

Yes, the Constellation 123.50.35.20.13.001 is fully compatible with quality artisanal 20mm aftermarket straps. Milano Straps are crafted in fine leather (alligator, shell cordovan, vegetable calf) and customisable in sizes, colours and details. The 18-month warranty and consultation from the Casati Milano atelier guarantee compatibility and durability.

A quality artisanal leather strap typically lasts 5-8 years with average daily use, provided regular maintenance (protection from excessive moisture, gentle drying after rain, annual conditioning). Alligator and shell cordovan are particularly resistant. Vegetable-tanned calf requires greater attention but develops a unique patina. Periodic cleaning with a soft cloth and rotating use among multiple straps significantly extend the product's lifespan.