Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Yellow Gold / Diamond / MOP

The Omega Constellation 131.58.29.20.55.001 has a lug width of exactly 18mm. This dimension is determined by the internal distance between the case lugs where the strap anchors. It is a critical parameter to ensure compatibility and aesthetic proportion. No tolerance margin: 16mm or 20mm straps would result in misalignment.

For a Constellation 131.58.29.20.55.001 in 18K yellow gold, alligator remains the choice of aesthetic and functional excellence. The natural texture of the reptile and luminous reflections harmonise beautifully with the golden patina. Alternatively, a vegetable-tanned calf in intense cognac colour or a natural beige taupe alligator maintains correct chromatic proportion. Avoid cool tones or sports materials (NATO, rubber) that betray the distinctly jewellery-like identity of this model.

Strap replacement requires a spring removal tool: position the watch with the lugs facing upward, insert the thin end of the tool into the small lateral slot of the spring bar, gently press outward to disengage it, and the strap or bracelet will detach. Reverse the operation to install the new strap. If you prefer certified security, the Casati Milano atelier performs the service with preventive inspection of the spring bar and lug functionality.

Yes. On milanostraps.it you will find a collection of 18mm straps specifically tested for geometric compatibility with compact Constellation models. Each strap is customisable in length (to fit your wrist), choice of leather (alligator, calf, cordovan), colour, initials and stitching thread. The warranty extends to 18 months at Casati Milano atelier, which also offers dedicated aesthetic consultation by appointment.

An artisanal quality leather strap (alligator, calf, cordovan) maintains structural and aesthetic integrity for 3 to 5 years, provided regular use and conservative care (drying after humidity exposure, avoiding prolonged immersions, occasional conditioning with neutral creams). Alligator tends toward superior longevity thanks to the natural density of the leather. Vegetable tanning ages with visible patina, transforming into a narrative element of the watch. At Casati Milano, regeneration and scheduled replacement services are available.