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

The Omega Constellation 131.25.29.20.63.001 has a lug width of 18 millimeters. This dimension is specific to the 29mm case and corresponds to the space between the pins that connect the case lug holes to the lateral lugs. To verify correct measurement, position a digital caliper perpendicular to the case, parallel to the pins, measuring the net distance without including case protrusions.

The best strap depends on intended use and personal preference. For aesthetic continuity and formal rigor, alligator represents the primary choice. If you desire natural patina over time, vegetable-tanned calf offers material density and longevity. Shell cordovan guarantees natural rigidity and prolonged structural resistance. For sports use, fluoroelastomeric rubber straps offer practicality while maintaining proportion to the case.

To change the strap, you will need a spring bar tool and a stable, well-lit work surface. Position the tool in the small lateral slot of the pin, applying gentle downward pressure to release the internal spring. Once the pin is extracted, the old strap separates from the case. Insert the new strap by aligning the holes with the pins, then reinsert the pin with a fluid motion until the spring catches. If you prefer to avoid the risk of damage to the case, contact an authorized Omega center or a specialized craftsman.

Yes, any strap with an 18mm lug width is compatible with your Constellation. Artisanal aftermarket straps allow superior customization compared to the original Omega bracelet: you can choose material, color, thickness, buckle type (traditional or deployant) and details such as stitching thread. MilanoStraps offers an extensive collection of 18mm straps in alligator, calf, shell cordovan and sports materials, all customizable at the Casati Milano atelier.

The lifespan of a leather strap depends on material and intensity of use. Quality alligator, with vegetable tanning, resists on average 4-6 years of daily wear, developing natural patina that increases aesthetic value. Shell cordovan, for its natural density, can exceed 8-10 years. Italian calf with vegetable tanning achieves 5-7 years while maintaining structural integrity. Critical factors are exposure to excessive moisture, rapid drying cycles and absence of periodic maintenance. Casati Milano atelier offers an 18-month warranty on every custom strap, with the possibility of reconditioning and keeper replacement at the end of useful life.