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

The lug width is 18mm. This measurement represents the distance between the two horizontal pins of the case where the strap attaches. To verify it, measure with a digital caliper the internal distance between the lugs: it should be exactly 18mm. An error in measurement can cause imprecise installation.

For this 29mm stainless steel model, we recommend high-end alligator (fine and regular grain), Italian vegetable-tanned calf for those who appreciate natural patina, or shell cordovan for absolute formal wear. A NATO canvas strap remains the most versatile choice for everyday use. Avoid materials that are too heavy as they could unbalance the elegant proportions of the case.

Use a spring bar remover tool (or a small flat screwdriver) to gently push inward the two horizontal pins positioned at the extremities of the lug. At the same time, grasp the strap and pull downward. Once removed, fully extract the pins with their springs. Clean the area from dust. Insert the new strap by aligning the holes with the pins and, using the remover, press inward until you feel the closure click.

Yes, all straps with 18mm lug width are compatible. Online you will find <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-18mm">18mm straps</a> ready for shipment in various leathers (alligator, calf, shell cordovan). For a bespoke experience and personalized choice, the Casati Milano atelier creates custom straps with direct updates and 18-month warranty.

Durability depends on the material, daily use, and care. A superior quality alligator resists 3-4 years of moderate use; Italian vegetable-tanned calf, if kept dry and protected from excessive moisture, lasts 2-3 years; shell cordovan, thanks to its density, can exceed 4 years. Prolonged exposure to sunlight, water, and chemical products significantly shortens useful life. Regular maintenance with protective creams extends longevity.