Omega
Constellation 131.23.41.21.11.001— lug 20mm

The lug width of the Constellation 131.23.41.21.11.001 is 20 mm. This width is standard for 41 mm round cases and ensures harmonious proportionality with the case. Measuring the lug width correctly using a digital calliper is essential to ensure proper fit of aftermarket straps.

For the Constellation with Sedna gold and ceramic, cognac or black alligator represents the classic choice: the natural grain enhances the case proportion without competing aesthetically. Alternatively, dark brown vegetable-tanned calf creates a warm tone and develops an elegant patina with use. For more sporty contexts, FKM rubber straps guarantee resistance and practicality.

The Constellation 131.23.41.21.11.001 is equipped with an integrated bracelet. To replace it with an aftermarket strap, you need to remove the original metal lugs using a spring bar tool and mount the new strap. We recommend entrusting this operation to a professional watchmaker to avoid damage to the case. Casati Milano atelier also offers personalized mounting service.

Yes, any strap with a 20 mm lug width is compatible with the Constellation 131.23.41.21.11.001, provided it is manufactured with correct construction tolerances. However, construction quality and material selection significantly impact visual proportion and durability. Milano Straps selects craftsmen who guarantee finishes consistent with the architecture of this Constellation.

A quality leather strap, made from alligator or calf using artisanal techniques, maintains functionality and aesthetics for 3-5 years with daily use, provided periodic maintenance (regular cleaning, protection from moisture). Durability depends on sun exposure, temperature variations and cleaning frequency. Casati Milano straps benefit from an 18-month warranty and can be regenerated through re-stitching and leather reconditioning.