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

The lug width is 18mm. This means the strap must have a width between 17.8mm and 18.5mm to fit correctly into the case lugs. Precise tolerance is essential to avoid play and ensure a stable closure. Measuring with a digital caliper between the two horizontal pins of the case is the most reliable method.

Warm brown or burgundy alligator is the most coherent choice, as the scales reflect light with understated elegance in harmony with the rose gold case. For a premium solution, shell cordovan develops natural patina over time, creating visual harmony with Sedna Gold. A saint-louis calf leather with vegetable tanning offers a more discreet alternative, perfect for those who prefer uniform texture.

The change is accomplished using the quick-release pins present on the case: position the small metal tool provided (or a very thin tweezers) in the lateral release hole of the pin, push upward and the pin will extract. Repeat for the second pin. Insert the new strap by aligning the holes with the pins and reinsert the latter until the locking click. The operation requires delicacy to avoid scratching the case.

Yes, any strap with an 18mm lug width is compatible. Milanostraps.it offers a complete collection of 18mm straps, customizable in leather, hide, rubber and canvas. To ensure maximum aesthetic coherence with Sedna Gold, it is advisable to choose noble materials such as alligator, premium calf or shell cordovan, avoiding conspicuous synthetics.

A good quality leather strap, worn daily with rotation among other straps, lasts between 18 and 36 months. Leather subjected to vegetable tanning ages more elegantly compared to chemical treatments, but is more sensitive to moisture. Alligator and shell cordovan, being more resistant, can exceed 3-4 years. Regular maintenance — drying after rain, periodic conditioning — significantly extends the strap's lifespan.