Strap for Constellation Quartz 27 Brushed Stainless Steel / Blue MOP

The lug width is 20mm. This dimension is specific to Constellation ladies' models of this generation. Measuring it means verifying the distance between the inner edges of the lugs with a digital caliper positioned perpendicular to the midpoint of the lug.

For this 27mm Constellation, we recommend cognac brown alligator for warm harmony with the silver dial, or vegetable-tanned black calf leather for minimalist contrast. Shell cordovan is ideal if you seek a tactilely dense leather with natural patina that develops over time. NATO fabric straps offer sporty versatility with seasonal rotations.

Specific tools are required: a spring bar tool and a non-slip work surface. Insert the tip of the spring bar tool into the lateral hole of the lug, gently lift the spring bar until the end is released, remove the strap and insert the new one, ensuring the spring bar repositions correctly in its seat. This operation is recommended on soft surfaces to avoid scratching the case.

Yes, 20mm aftermarket straps are fully compatible with this reference. They are available in leather (alligator, calf, shell cordovan), fabric and rubber, with possibilities for customization in colors, initials and thread color. Milano Straps offers a ready-to-ship range and bespoke services through the Casati Milano atelier with 18-month warranty.

Durability depends on the material and usage. A quality artisanal alligator or calf resists 3-5 years with moderate daily wear; shell cordovan, due to its superior fibrous density, can reach 5-7 years. Vegetable-tanned leather develops a desirable patina over time. Environment (humidity, sun exposure) and frequency of use influence aging.