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

The lug width of the Constellation 131.55.29.20.58.001 is 18mm. This dimension is crucial for compatibility with aftermarket straps: any strap you choose must have an exact width of 18mm to fit correctly on the case attachment pins without lateral movement.

For a yellow gold Constellation, alligator leather with vegetable tanning represents the aristocratic choice, thanks to its regular grain and ability to develop patina over time. Alternatively, smooth dark brown calf leather offers contemporary elegance, while black rubber allows for daily practicality without aesthetic compromise.

Changing the strap requires the use of a specific tool called a spring bar tool, which allows you to compress the small springs (attachment pins) and remove them from the case. Insert the new strap by aligning the lug with the pins, then release the spring bar so the strap remains securely in position. It is advisable to perform the operation with precision to avoid damage to the case.

Yes, milanostraps.it offers a dedicated collection of 18mm straps customizable in sizes, leathers and colors, from simple alligator to structured calf, as well as technical rubber and NATO. All straps are designed to fit perfectly with the Omega case while maintaining original proportions.

The lifespan of a leather strap depends on the intensity of use, climate and quality of tanning. A high-quality watchmaking alligator or calf strap, worn daily, typically lasts between 3 and 7 years before requiring replacement. Vegetable tanning tends to age more elegantly than chrome tanning, developing a characteristic patina.