Strap for Constellation Co-Axial 31 Stainless Steel / Red Gold / MOP

The lug width is 18mm. This measurement is determined by the width of the case bridge between the upper and lower lugs. You can verify it by directly measuring the distance between the two attachments. A strap with incorrect lug width would cause aesthetic instability of the case and could damage the integrated spring bars.

Vegetable-tanned alligator is the most refined choice: its natural texture amplifies the lightness of the case and allows natural patina to develop over time. Alternatively, rigid calfskin (box calf) offers sharp colour definition, while shell cordovan guarantees exceptional longevity and intrinsic lustre. For absolute daily wear, Omega-certified FKM rubber ensures stability in all conditions.

Remove the case from the original bracelet using the spring bar tool (special tool supplied with the watch). Insert the tool into the spring bar anchor of the lug, apply controlled pressure to release the end, then extract the bar. Repeat on the other side. Fit the new strap by aligning its end to the attachment and secure the bar with the same procedure, in reverse. If uncertain, contact a specialized watch retailer.

Yes, any strap with 18mm lug width is compatible. Milano Straps offers handcrafted straps in alligator, calfskin, shell cordovan and rubber, all customizable in colour, initials and stitching thread. The Casati Milano atelier also creates bespoke versions with personal leather selection and 18-month warranty.

A quality alligator or calfskin strap with vegetable tanning lasts 3-5 years with daily use and ordinary maintenance (gentle cleaning, protection from prolonged moisture). Shell cordovan exceeds 7-8 years. Lifespan depends on environment (humidity, heat, sun exposure), frequency of use and care applied. Periodic rejuvenation (conditioning with natural oils) significantly extends the strap's life.