Technical Archive

Omega
Constellation 131.58.29.20.55.001

Omega Constellation 131.58.29.20.55.001: strap made to measure on the watch at the Casati Milano atelier, by appointment.

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

Technical Specifications

Omega 131.58.29.20.55.001
Reference

131.58.29.20.55.001

Movement

Omega caliber 8701 Hours, Minutes, Seconds | Date | Chronometer, Co-Axial Escapement

Made to Measure

The strap for this watch is made to measure

On the Omega Constellation the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.

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FAQ

Which strap is most suitable for this yellow gold Omega?

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.

How do you change the strap on the Omega Constellation 131.58.29.20.55.001?

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.

What is the average lifespan of a leather strap for this Omega?

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.

The next step

The right strap isn’t chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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By appointment only · Milan

The atelier's website: casatimilano.com