Strap for Constellation Co-Axial Master Chronometer 27 Stainless Steel / Red Gold / Silver Silk-Diamond

The lug width of the 127.20.27.20.52.001 model is 17mm. This is the internal distance between the two lugs of the case where the strap is attached. To verify, measure perpendicularly between the internal lugs without including the external protrusions of the case.

For this two-tone rose gold and steel model, chocolate brown alligator with gold stitching represents the most elegant choice and enhances the case's color palette. Alternatively, vegetable-tanned calf or cognac shell cordovan offer sophisticated elegance with great versatility for daily wear.

To change the strap, use a dedicated spring bar tool to gently compress the internal spring of the spring bar while you extract the pin from the case's lugs. Position the new strap by aligning it perpendicularly and push it until you feel the spring bar click into the lugs. Repeat on both sides. A specialized atelier like Casati Milano can handle the operation ensuring precision.

Yes, provided the strap is made of superior quality leather and has a width compatible with the 17mm lug width. Custom straps by MilanoStraps are specifically designed to maintain the aesthetic proportions of 27mm watches, guaranteeing secure mounting and no damage to the case lugs.

A quality leather strap, with vegetable tanning, generally lasts 2-4 years with daily wear, depending on exposure to water and humidity. Shell cordovan lasts longer (3-5 years) thanks to its natural density. Superior quality alligator can last 3-4 years while maintaining excellent structural integrity. A warranty of 18 months like that of Casati Milano covers manufacturing defects during the first year and a half of use.