Strap for Constellation Co-Axial 38 Stainless Steel / Red Gold / Black

The lug width is 18mm. This measurement corresponds to the distance between the pins (the metal cylinders that support the spring bar) and is fundamental to ensure perfect strap fit on the case. A tolerance of ±0.5mm is acceptable, but 18mm is the official Omega reference value.

A French alligator with tight grain is the excellent choice: both materials (red gold and alligator) develop patina with use, creating an aesthetic symbiosis. A versatile alternative is Barenia calf leather in beaver brown, which elegantly complements the stainless steel without chromatic conflicts.

The Constellation 123.20.38.21.01.001 uses a standard 18mm spring bar. Remove the old strap by gently pushing the spring bar to one side with a small flat tool (a Teflon stick is ideal), then extract the pins. Insert the new strap by aligning the holes and repeat the operation on the other side. If you have any doubts, a watchmaker can perform the operation in 10 minutes.

Yes, as long as the measurement is precisely 18mm. Any strap with an 18mm lug width will fit the case without problems. We recommend verifying that the strap width does not exceed the case width (approximately 10-11mm) to maintain elegant proportions on the wrist.

Durability depends on the quality of the leather and usage. Premium alligator lasts 12-20 years, Barenia calf 8-12 years, shell cordovan up to 20 years. Rotating between multiple straps, protection from intense rain, and proper drying significantly extend the strap's lifespan.