Strap for Constellation Co-Axial 41 Chronograph Double Eagle Red Gold / Baguette / Brown / Rubber

The lug width of model 121.57.41.50.13.001 is 20mm. This dimension is determined by the integrated geometry of the red gold case and must be measured between the widest internal points of the lugs. A strap with incorrect lug width will not fit properly and will compromise the overall aesthetics of the watch.

Alligator represents the choice of maximum elegance for this model: the fine grain does not visually compete with the brilliance of red gold. Vegetable-tanned calf is a valid alternative for those who prefer a patina that develops naturally over time. Shell cordovan offers initial rigidity and brilliance that soften over the months, acquiring aesthetic depth.

The strap is changed using a spring bar tool (lever or screw type). Identify the two angled lugs, gently compress the elastic pins with the tool and slide off the old strap. Insert the new strap by aligning the pins with the lug seats, ensuring that the lug width of 20mm is correct and that the lugs are perfectly centered.

Yes. It is essential that the strap has a lug width of exactly 20mm and is made of materials consistent with the value of the model. The <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-20mm">20mm straps available online</a> are specifically designed for watches with this lug width and offer customization in leather, length, and construction details.

A high-quality alligator or calf strap can last 18-24 months with regular wear, with variability based on climate, humidity, and frequency of wear. Shell cordovan tends to age more slowly but may require more careful maintenance. The 18-month warranty offered by Casati Milano covers manufacturing defects, while aesthetic longevity also depends on the owner's personal care.