Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Stainless Steel / Sedna Gold / MOP / Diamond

The lug width of the 131.25.29.20.55.001 model is 18mm. This measurement represents the distance between the two attachment slots on the case. To verify it, position a millimeter ruler perpendicularly between the lugs: the value obtained must correspond to 18mm to ensure complete compatibility with the strap.

For the 131.25.29.20.55.001 we recommend alligator or vegetable-tanned calf leather. Alligator represents the most elegant choice thanks to its natural texture that complements the formal aesthetics of the Constellation and the Sedna Gold-steel contrast. Vegetable-tanned calf leather offers daily versatility and develops a unique patina over time.

The strap is changed using the dedicated tool (spring bar remover) usually supplied with Omega or available for separate purchase. Insert the thin blade of the tool into the small hole under the lug to release the spring bar, then gently extract the old strap. Repeat on the other side. Insert the new strap by aligning the spring bar with the holes and press until it clicks into place.

Yes, any strap with <a href="/pages/termine-glossario/misura-ansa">18mm lug width</a> is compatible with the 131.25.29.20.55.001. At milanostraps.it you will find complete collections of <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-18mm">18mm straps</a> in alligator, calf, shell cordovan and rubber, customizable. The Casati Milano atelier also creates bespoke made-to-measure straps with personal leather selection.

A quality leather strap with vegetable tanning or alligator typically lasts an average of 3-5 years with conscious daily wear. Durability depends on climate (humidity accelerates aging), frequency of wear and maintenance. Shell cordovan straps tend to last longer thanks to the density of the leather. Milanostraps offers an 18-month warranty on all manufactured straps.