Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Sedna Gold / Diamond / Blue - Diamond

The Omega Constellation 29mm (reference 131.58.29.20.53.002) has a lug width of exactly 18 millimeters. This dimension represents the distance between the two attachment points of the bracelet to the case, where the spring bars are inserted. It is essential to verify this measurement before purchasing an aftermarket strap, as even a 2mm difference (16mm or 20mm) would make the strap incompatible.

For a Constellation in Sedna Gold, alligator remains the most natural choice: its fine texture reflects the elegance of the case. However, Italian calf leather in burgundy or cognac tones, or shell cordovan in wine color, offer equally sophisticated luxury alternatives. The choice depends on use: fine leather for special occasions, robust calf for daily wear, rubber for sports practicality.

To replace the metal bracelet with a leather strap, you need to extract the spring bars from the case using a dedicated tool (available online or at jewelry stores). The procedure is simple: position the tool on the spring bar seat, apply gentle pressure to compress the internal spring, then extract the pin. Once the bracelet is removed, insert the new 18mm strap on the same attachment points. Recommended procedure: consult an experienced jeweler to avoid scratches on the gold case.

Yes, all straps with 18mm lug width are compatible with the Constellation 29mm. On milanostraps.it you will find a dedicated collection of 18mm straps in various materials: alligator, Italian calf, shell cordovan, vegetable-tanned leather, and rubber. Each strap can be customized in length, stitching thread color, and initial engraving.

A fine leather strap (alligator, shell cordovan, calf with vegetable tanning) generally lasts between 3 and 5 years under moderate daily wear conditions. Longevity depends on the frequency of wear, exposure to water and humidity, and care (avoid splashes, dry after bathing). Materials like shell cordovan and alligator maintain structural integrity longer. The 18-month warranty covers manufacturing defects; after this period, the strap can be regenerated or replaced at the Casati Milano atelier.