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

The Omega Constellation 131.55.29.20.52.002 features a lug width of 18 millimetres. This width is standardized and determines compatibility with aftermarket straps: any artisanal strap must be exactly 18mm wide to fit the case lugs correctly without mechanical play.

For this yellow gold Constellation, alligator remains the quintessential formal choice, with preference for brown, cognac, or burgundy tones. Shell cordovan offers a sophisticated alternative that develops natural patina over time. Vegetable-tanned calf provides versatile daily wear, while a black rubber strap maintains sporty practicality without aesthetic compromise.

Strap replacement requires a specific tool to extract the spring bars that connect the case to the original strap. For the Constellation 131.55.29.20.52.002, the bars must be gently extracted, the old strap removed, and the new one (always 18mm) inserted by applying the bars in reverse. A specialized craftsman like Casati Milano performs this operation safely, preserving case integrity.

Yes, any aftermarket strap with an 18 millimetre lug width is mechanically compatible with this model. The key is to verify that the strap respects this exact measurement and that the spring bars are compatible with the case lugs. For maximum aesthetic compatibility, choose quality leathers that enhance the yellow gold case.

An artisanal leather strap of quality (alligator, shell cordovan, or calf) typically lasts 3–5 years with moderate daily wear. Durability depends on tanning, intensity of use, and maintenance: avoid prolonged water exposure and protect leather from direct impacts. Casati Milano guarantees 18 months on their straps, with the possibility of early replacement if necessary.