Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Yellow Gold / Champagne - Diamond

The lug width for this model is 18mm. This means the strap must have a width of 18mm at the point where the spring bar pin is inserted into the lugs of the case. A tolerance of ±0.2mm is standard, but it is essential to verify with your watchmaker before purchase to avoid incompatibility.

Alligator and shell cordovan represent the most appropriate choices: their refined character reflects the value of the yellow gold case, and they develop patina over time, increasing aesthetic authenticity. For daily versatility, granulated calf leather in dark brown or taupe-grey tones offers comfort and longevity without compromising formality. Synthetic materials are not recommended as they diminish the value of the watch.

The change requires minimal tools: a three-prong spring bar tool. Position the prong in one of the holes of the spring bar to compress it, extract from the opposite side, remove the old strap, and insert the new one. For the first time, we recommend having your trusted watchmaker perform the operation to avoid scratches on the case.

Yes, if the choice is conscious and made with noble materials (alligator, shell cordovan, quality calf). The use of artisanal straps in fine leather represents a customization that actually increases the emotional connection with the watch. A strap made from vegetable-tanned leather also supports a message of sustainability and authenticity. The key is to avoid cheap materials or colours inappropriate to the context of use.

A high-quality alligator or shell cordovan strap, treated with vegetable tanning, maintains structural integrity between 3 and 5 years with daily wear if subjected to regular maintenance (gentle drying after exposure to water, protection from prolonged sunlight). Granulated calf leather has slightly lower durability, approximately 2-3 years. Milano Straps offers an 18-month warranty and supports repair services to extend the strap's service life.