Strap for Constellation Master Chronometer 39 Stainless Steel / Black / Bracelet

The lug width of the Constellation 131.10.39.20.01.001 is 24 millimeters, a standard width for mid-size Omega models. This measurement represents the internal distance between the two case lugs and should be verified with a digital caliper before purchasing a strap, as even minor deviations can prevent mechanical compatibility.

Vegetable-tanned alligator represents the most elegant solution, as the natural grain and patina that develops over time contrast magnificently with the geometric rigidity of the lugs. Box calf offers a more uniform formal alternative, while heavy cotton NATO and FKM rubber are suited to more informal and sporty use.

Changing the strap requires extraction of the spring bars that hold the strap to the case lugs. Using a spring bar tool, apply light lateral pressure to pop the bar from its seat, remove the old strap, and insert the new one by aligning the holes with the lugs. This is a delicate operation: if you are not experienced, we recommend contacting an authorized service center.

Yes, all artisanal straps with 24mm lug width are compatible with this model. Milano Straps offers a specific range of customizable 24mm straps in leather, color, and stitching thread. Compatibility is guaranteed by the universal spring bar attachment system, though for an optimal experience we recommend consulting our team to choose the thickness most proportionate to the Omega case.

The lifespan of a leather strap depends on use and maintenance. Under normal daily wear conditions, an artisanal alligator or calf strap of quality maintains optimal functionality for 3-5 years, though natural patina and aging begin to manifest after the first year. Exposure to excessive moisture, unwiped sweat, and repeated folding accelerate wear. Milano Straps provides an 18-month warranty and recommends rotating straps to distribute wear.