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

The lug width of model 131.20.29.20.53.002 is 18 millimeters. This measurement is specific to the 29 mm case and is calculated from the internal distance between the two lugs. It is essential to purchase a strap compatible with this measurement to ensure perfect fit and case shoulder water resistance.

The best strap depends on intended use and desired contrast. For formal occasions, black alligator or black crocodile creates a sophisticated and nocturnal effect. For elegant everyday wear, vegetable-tanned calf in cognac pairs warmly with Sedna Gold. For versatility, a NATO strap in dark blue or slate grey maintains balanced visual proportions. Milano Straps offers bespoke personalization in artisanal quality with various leather options.

The strap is removed using a specialized spring bar tool or bayonet spring. Position the watch on a soft surface to prevent scratches. Insert the flat end of the tool under the spring bar from the front, apply gentle pressure, and extract the bar. Repeat on the other side. Install the new strap by reversing the procedure. If unsure, a specialized watchmaker can perform the change in just a few minutes.

Yes, any strap with an 18 mm lug width is compatible. Milano Straps artisanal straps are crafted from selected leathers and superior stitching, often more refined than original Omega straps. What matters is verifying that the internal distance between the lugs is exactly 18 mm and that the leather thickness does not exceed 3-3.5 mm to avoid friction against the case.

Lifespan depends on material and usage. Vegetable-tanned calf lasts 5-8 years with daily wear, developing a natural patina. Shell cordovan reaches 10-15 years of useful life thanks to the compact fiber of horse back. Alligator lasts approximately 7-10 years. A NATO strap has superior longevity (15-20 years). Frequency of use, climate, and maintenance (moisturizing cream, regular cleaning) significantly impact durability.