Strap for Constellation Quartz 27 Brushed Stainless Steel / Diamond / MOP Omega

The lug width of reference 123.15.27.60.55.005 is 14 mm. It is measured with a caliper positioned between the two case lugs, from the inner edge of one to the other. An incorrectly sized strap does not adhere properly and compromises the watch's aesthetics.

It depends on use. For formal elegance, cognac brown or corbeau black alligator amplifies sophistication. For everyday versatility, vegetable-tanned calf in natural leather or tortora grey tones offers durability and a captivating aged patina. For summer or sports activities, an FKM rubber or NATO canvas strap ensures practicality without aesthetic compromise.

Strap replacement requires a specific tool called a spring bar tool. Position the tool in the small lateral holes beneath each lug, apply pressure to compress the internal spring, then extract the pin. Insert the new strap by aligning the lug width to the holes, and let the spring snap back. If you are not experienced, consult a professional watchmaker to avoid damage to the case.

All straps with a lug width of 14 mm are compatible: alligator, calf, shell cordovan, NATO canvas, rubber, jacquard fabric. The choice depends on aesthetic and functional preferences. Milano Straps offers a curated collection of 14 mm straps, from classic to innovative, ready to ship or customizable at the Casati Milano atelier.

A quality leather strap, such as alligator or vegetable-tanned calf, typically lasts 3–5 years with daily wear. Longevity depends on exposure to sweat, moisture, direct sunlight, and maintenance frequency. To extend its lifespan, dry the strap after water contact and apply leather balm every 6 months. An FKM rubber or NATO strap lasts longer under extreme conditions.