Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Stainless Steel / Yellow Gold / Aventurine / Diamond

The lug width of the Constellation 131.25.29.20.53.001 is 18mm. This is the width that the strap must have to be compatible with the case. Omega provides this specification as standard for compact models in the Constellation line. When purchasing an aftermarket strap, always verify that it is cut to 18mm to avoid mounting issues.

The best strap depends on your intended use and aesthetic preference. For formal wear, black alligator with ivory thread stitching is the most refined choice and enhances the aventurine blue dial. For everyday use, a medium brown calf (cognac-style) or pearl grey calf offer versatility and visual balance with the two-tone gold/steel case. For those seeking practicality, a quality rubber or silk NATO represent contemporary and functional solutions. What matters is that the chosen material be vegetable-tanned to ensure durability and elegant aging.

Changing the strap is simple and requires no specialized tools. Flip the watch over and locate the fixing pins (spring bars) at the ends of the case, where the strap attaches. Use a small flat screwdriver or a dedicated tool (available in maintenance kits) to gently push the pin inward, releasing the tension. The strap will detach easily. Insert the new strap in the opposite position, ensuring the pins click correctly. Verify that the strap is perfectly aligned before wearing the watch again.

Yes, completely. Casati Milano artisanal straps are crafted bespoke while respecting the technical specifications of the watch. For the Constellation 131.25.29.20.53.001, simply order an 18mm strap (or specify the model reference when ordering). Casati Milano uses premium vegetable-tanned leather and offers an 18-month warranty on all straps. It is advisable to contact the atelier to discuss leather choices, color, and stitching based on your personal style.

A quality leather strap, made with vegetable tanning, has an average lifespan of 3-5 years with daily use, provided it is properly cared for. Factors that influence longevity are: frequency of use, exposure to water, environmental humidity, and maintenance. An alligator or shell cordovan strap tends to last longer (5-7 years) due to the superior density of the fibers. To extend the strap's life, avoid prolonged exposure to baths and showers, dry it quickly if wet, and store it in a dry environment. A rubber or silk strap offers superior practicality in humid environments, with comparable durability if maintained with care.

No, absolutely not. A 20mm strap is not compatible with the Constellation 131.25.29.20.53.001. The case fixing pins are spaced to accommodate exclusively 18mm straps. Attempting to force a wider strap could damage both the case and the strap itself. It is essential to always verify the lug width before ordering an aftermarket strap. If you have any doubts, contact Casati Milano: the team will be able to advise you on the correct and personalized solutions.