Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Stainless Steel - Moonshine Gold - Diamond / Champagne Supernova / Alligator

The lug width of model 131.28.29.20.58.001 is 18mm. This measurement is the distance between the two lugs of the case and represents the critical parameter for purchasing a compatible strap. Always verify this measurement with a digital caliper before ordering to ensure the strap will fit perfectly without play or abnormal pressure.

For the two-tone steel and Moonshine Gold, we primarily recommend a chocolate brown alligator or glossy black calf. Alligator enhances the warmth of the gold, while black calf creates maximum contrast with the steel. For formal-sporty occasions, a vegetable-tanned bordeaux calf offers the best aesthetic balance between the two metals of the case.

Strap replacement requires a specific tool to remove the spring bars from the lugs of the case. Proceed as follows: place the watch on a soft surface, locate the small circular hole on the case lug, insert the tool into the opening and gently push the bar downward to release it. Repeat on the other side. Remember that the lugs of a compact Constellation are delicate: if you are not experienced, contact a certified watchmaker or our Casati Milano atelier.

Yes, provided it measures exactly 18mm and the spring bar has a standard diameter (1.8mm). Quality aftermarket straps are manufactured with precise tolerances and function identically to original Omega straps. Material and construction compatibility is universal; what varies is the quality of the leather, type of finish and durability over time. Our straps are dimensioned and tested specifically for this model.

A high-quality alligator strap lasts an average of 5-7 years of intense daily use, thanks to the natural resistance of the leather to repeated flexing. A vegetable-tanned calf strap has a similar lifespan, but its appearance evolves more quickly, developing a personal patina. Factors such as climate (humidity, heat), frequency of wear and maintenance (drying, occasional hydration with specific creams) significantly influence longevity. The Casati Milano atelier offers an 18-month warranty on all handcrafted straps.