Strap for Constellation Co-Axial 35.5 Yellow Gold / Silver / Olympic Beijing 2008

The lug width of the Constellation 111.50.36.10.52.001 is 20 millimetres. This dimension is determined by the distance between the lateral pins of the case and is essential for choosing compatible straps. Measuring the lug width correctly ensures precise assembly and proper positioning of the strap at the watch's lugs.

For the bicolour Constellation 111.50.36.10.52.001, dark cognac alligator (which echoes the reflections of yellow gold) or vegetable-tanned calf leather in black are recommended, maintaining formal elegance. A contemporary alternative is burgundy shell cordovan, which amplifies chromatic sophistication. For casual pairings, a light grey NATO or black rubber strap offers versatility without compromising the watch's identity.

Changing the strap requires specific tools: a spring bar tool that allows you to compress the lateral spring pins and free them from the case lugs. Position the watch on a stable surface, insert the flat tip of the spring bar tool into the small hole next to the pin, gently push to compress the spring, and the pin releases. Repeat the operation for the other pin. Installing the new strap follows the reverse procedure. If you are not experienced, Casati Milano will provide professional installation service.

Yes, quality aftermarket straps are fully compatible, provided they have lugs dimensioned for the 20 millimetre lug width. Milano Straps offers a wide range of tested 20mm straps, customizable in leather, colour, initials and stitching thread, with the same construction reliability as original Omega straps. Casati Milano also offers custom straps created by the atelier with personal selection of leathers and 18-month warranty.

The lifespan of a leather strap depends on frequency of use, care and type of tanning. A strap in alligator or shell cordovan, if treated with regular care (avoiding excessive water and humidity, periodically applying nourishing creams), can last 5-7 years as a minimum, developing a valuable patina over time. A vegetable-tanned calf has similar longevity. A woven NATO strap is more durable and can exceed 10 years. The Casati Milano atelier guarantees 18 months on custom straps and recommends annual inspections to verify the condition of stitching and materials.