Strap for Constellation Automatic 27.5 Stainless Steel / Red Gold / Diamond / MOP

The lug width of the 1397.76.00 is 14mm. This width is precise and specific to this model: it corresponds to the internal distance between the case lugs. A 14mm strap ensures correct visual integration without gaps or overlaps on the case.

Alligator is the most sophisticated choice: its medium-fine grain naturally complements the iridescence of the mother-of-pearl dial. Shell cordovan offers superior brilliance and durability, ideal for those who appreciate an evolved patina. Vegetable-tanned calf leather is the versatile and accessible solution, with an aesthetic that ages with character.

To change the strap, remove the spring bars (the small pins that secure the strap to the lugs) using a spring bar tool. Gently push the pins inward to extract the old strap, then insert the new 14mm strap by aligning it with the lugs and repositioning the spring bars. The operation takes just a few minutes and requires no specialized tools.

Yes, provided the lug width is exactly 14mm. Milano Straps manufactures aftermarket straps specifically sized for this measurement, guaranteeing complete structural compatibility. Customization in leather, thread, and keeper does not affect technical compatibility.

A quality leather strap (alligator, shell cordovan, or vegetable-tanned calf) lasts between 3 to 7 years depending on use and care. Alligator and shell cordovan offer superior durability. Milano Straps provides an 18-month warranty on custom-made straps and offers maintenance and spring bar replacement services.