Strap for Constellation Co-Axial 27 Brushed Stainless Steel / Yellow Gold / Champagne MOP

The lug width of this model is exactly 18mm. This measurement must be taken from inside to inside of the case lug holes. It is critical to verify this measurement before purchasing an aftermarket strap, as even minor variations would result in mechanical incompatibility or unsightly gaps between the case and strap.

For this model with mother-of-pearl dial and stainless steel/yellow gold case, we recommend alligator in dark tones (mahogany brown or blue) to maximize aesthetic contrast, or vegetable-tanned calf in havana shades. If you desire versatility, a Technical rubber strap or NATO fabric offers practicality while maintaining elegance. The choice depends on usage context and personal patina preferences.

The change is accomplished by removing the spring bars that connect the strap to the case lugs. Using a dedicated tool (spring bar tool), apply pressure to one of the bars to release the strap from one lug, then repeat on the other end. Proceed carefully to avoid scratching the case. If you are not experienced, entrust the task to a professional watchmaker to prevent damage.

Yes, provided the strap has a lug width of exactly 18mm. Compatible straps available online and through specialized retailers (such as Milano Straps) are tested to ensure correct mechanical fit and aesthetic harmony with the Constellation design. Always verify compatibility before purchase.

Durability depends on the material and maintenance. High-quality alligator or calf with vegetable tanning typically lasts 5-7 years under normal daily wear conditions. Cordovan can last 10+ years while developing a fascinating patina. To extend strap life, avoid prolonged moisture exposure, wear more delicate models occasionally, and apply protective treatments periodically. The Casati Milano atelier provides an 18-month warranty on all straps produced.