Strap for Constellation Master Chronometer 41 Stainless Steel / Sedna Gold / Ceramic / Blue

The lug width of this model is 18mm. This parameter defines the distance between the case lugs and determines compatibility with aftermarket straps. Verify it by measuring the width of the lugs from the inside of the case: the 18mm is measured from the outer shoulder of one lug to the other.

It depends on use and aesthetic preferences. For formal occasions, choose black or dark brown alligator; for everyday versatility, vegetable-tanned calfskin that develops patina; for sporty-casual wear, NATO canvas or shell cordovan. The combination of black ceramic, Sedna gold, and steel in this model pairs well with dark tones, burgundy, and neutral greys.

You will need a specific tool to remove the spring bars that anchor the strap to the case lugs. We recommend contacting a professional watchmaker or the Casati Milano atelier to avoid damage to the case. Milano Straps also provides illustrated guides and technical support for independent strap changes if you wish to proceed safely.

Yes, any strap with 18mm lug width is physically compatible. Always verify that the lug width is identified as 18mm in the product description. Milano Straps offers a specific collection of 18mm straps, all tested and ready for installation without requiring any modifications to the case.

A quality leather strap, with vegetable tanning or shell cordovan, typically lasts 3–5 years with daily use, developing a characteristic patina that increases its aesthetic value. Longevity depends on humidity, sun exposure, and maintenance level. Casati Milano straps include an 18-month warranty and require only occasional conditioning with specialized creams for fine leathers.