Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Sedna Gold / Snow / Bracelet

The lug width of the Constellation 131.55.29.20.99.003 is 18mm. This measurement is determined by the distance between the spring bars (the pins that attach the strap to the case). To verify compatibility, measure the distance between the spring bars: it must be between 17.8 and 18.2mm. Do not confuse this with the inner shoulder width of the case, which is a different measurement.

For the Constellation 131.55.29.20.99.003 in Sedna Gold, black alligator with a rose gold deployant is the most elegant choice, maintaining the chromatic dialogue between metal and strap. Excellent alternatives include chocolat brown calf with vegetable tanning (which develops over time) or light cognac calf for a more contemporary approach. Avoid shell cordovan, as it would create chromatic saturation with the rose gold.

To change the strap, you need to remove the spring bars that attach the original strap to the case. Use a spring bar removal tool or contact a specialized workshop. Ensure that the new strap has an 18mm lug width. If you are not experienced, it is advisable to entrust the operation to an Omega service center or a certified watchmaking workshop to avoid damage to the case.

Yes, you can use an aftermarket strap as long as it has an 18mm lug width and is made with quality materials (alligator, calf, quality NATO). Ensure that the strap is compatible with your wrist by consulting the manufacturer or measuring the lengths. milanostraps.it offers customizable 18mm straps with an 18-month guarantee, specifically designed for luxury watches like your Constellation.

Durability depends on the material and usage. Certified quality alligator typically lasts 4-6 years with daily wear, while vegetable-tanned calf can last 3-5 years. Nylon NATO has superior durability (7-10 years). The natural aging of fine leather is part of its charm: the patina that forms does not represent wear, but aesthetic development. Casati Milano guarantees custom straps for 18 months from creation.