Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Stainless Steel / Silk Diamond / Diamond

The lug width of the Constellation 131.15.29.20.52.001 is 18 mm. This is the distance between the two articulation pins that extend from the case and allows you to attach straps with exactly this width. An incorrect measurement or the use of straps of different widths would compromise the aesthetic fit of the watch.

For a Constellation with mother-of-pearl dial and steel case, the most suitable materials are medium brown alligator for formal elegance, vegetable-tanned calf leather for a warmer appearance and natural aging, or a rubber strap for casual occasions and humid climates. The choice depends on the intended use: the strap should complement the sober and precise character of this watch without competing with the dial.

The strap is changed by removing the articulation pins that pass through the lugs. Using a spring bar remover tool (a specialized tool with two curved ends), gently push one of the pins downward to free one end of the strap, then repeat the operation from the other side. The new 18 mm strap is inserted by aligning the pins in the appropriate slots, ensuring that the fit is symmetrical and stable.

Yes, any 18 mm strap with compatible attachments can be mounted on this Constellation. Artisanal alligator, calf leather, and rubber straps are valid solutions that often surpass OEM straps in terms of material quality and customization. The important thing is to verify the exact width and compatibility of the attachment pins.

The durability depends on the intensity of use, climate, and the material chosen. A top-quality alligator in vegetable tanning typically lasts 3-5 years with moderate daily use, developing a characteristic patina over time. A vegetable-tanned box calf leather, more robust, easily reaches 4-6 years. Deterioration begins with loosening of the buckle and cracks in the inner curve where the strap bends at the wrist. Periodic maintenance and repair by specialized artisans significantly extend the life of the strap.