Strap for Constellation Automatic 27.5 My Choice Stainless Steel / Diamond / MOP Iris

The lug width of the Omega Constellation 1591.71.00 is 18 millimetres. This measurement refers to the width between the strap attachment pins, and must be verified with precision using a digital calliper positioned directly between the pin axes, not on the external lugs of the case. It is essential to ensure a correct fit without lateral play on the wrist.

For the Constellation 1591.71.00 we recommend alligator in medium brown tone (tobacco) or shell cordovan in natural tone. These materials enhance the feminine elegance and compact proportion of this 27.50mm watch. Alligator offers natural texture and sophisticated patina; shell cordovan develops a fascinating colour depth over time. Both maintain the aesthetic balance between steel case and satin-finished silver dial.

Use a spring bar tool to gently compress the spring bar and slide it out of its housings in the case. Never force the movement to avoid damage. Insert the new 18mm strap by correctly aligning the pins in the case's axes, checking that the strap adheres symmetrically. If unsure, we recommend the support of a local watchmaker or our Casati Milano atelier.

Yes, any strap with an 18mm lug width is compatible with the Constellation 1591.71.00, provided it is made by craftsmen with an understanding of watch proportions. Our straps on milanostraps.it are specifically crafted to respect the curves of the case and maintain the aesthetic balance of this compact model. We always verify that the length is adequate for your wrist (standard or long) during customisation.

A fine leather strap (alligator, shell cordovan, vegetable-tanned calf) on a daily-worn watch has an average lifespan of 3-5 years before requiring replacement. Longevity depends on environmental humidity, sun exposure, the type of tanning and maintenance frequency. Our straps come with an 18-month warranty against manufacturing defects. The patina developed during this period tells the personal story of wear, transforming the strap into an increasingly unique and characteristic element.