Strap for Constellation Master Chronometer 39 Stainless Steel / Yellow Gold / Silver / Alligator

The lug width of the Omega Constellation 131.23.39.20.02.002 is 24 mm, measured from the inner edge of one pin to the inner edge of the other pin. This measurement is critical to ensure a perfect strap fit: an error of even 0.5 mm creates misalignment problems at the case lugs.

Dark brown alligator (cognac or mahogany) represents the ideal formal choice, as its regular grain does not compete with the lugs and the warm color echoes the yellow gold. For those preferring a sport-elegant approach, shell cordovan combines natural lustre and tactile density that references the steel. Vegetable-tanned calf offers a patina that evolves over time, creating a personal narrative.

The Constellation 131.23.39.20.02.002 features integrated "lugs" attachments that secure the strap through two horizontal pins. Use a spring bar tool to gently extract the pins from the lugs: push the inner plunger downward and slide the pin out. When reinserting, ensure the pin is perfectly aligned in the holes, then release with gentle pressure until you feel a click.

Yes. Any strap with a 24 mm lug width is formally compatible. However, for optimal aesthetic and functional results, we recommend artisanal straps specifically designed for this case, which account for the proportional relationship between the 24 mm lugs and the 39 mm diameter, as well as the lug height and lug footprint.

A quality leather strap (alligator, calf, shell cordovan) typically lasts 4-7 years with daily use. Longevity depends on exposure to moisture, sweat, UV rays and conditioning frequency. Vegetable-tanned straps tend to age more elegantly, developing a patina that extends their perceived lifespan. An artisanal strap with an 18-month warranty covers manufacturing defects and material flaws.