Omega
Constellation 131.23.41.21.06.002— lug 20mm

The lug width of the Constellation 131.23.41.21.06.002 is 20mm. This measurement is the precise standard for this model and guarantees total compatibility with aftermarket straps. You can verify it by positioning a digital caliper between the inner edges of the two lugs on the case, in the area where the strap is inserted.

The ideal strap for the Constellation 131.23.41.21.06.002 is in vegetable-tanned alligator in dark brown or vegetable-tanned calf in slate grey. These materials respect the aesthetic balance of the ceramic, yellow gold and steel case without competing visually with the dial. Avoid saturated colours (absolute black, blue, red) that would create excessive contrast.

Remove the used strap by extracting the spring bars from the lugs with a dedicated tool or a blunt knife. Insert the spring bars of the new 20mm strap into the lug cavities, making sure they lock completely. Proceed with caution to avoid scratching the case; if you are not experienced, consult a professional.

Yes, any strap with a 20mm lug width is compatible with the Constellation 131.23.41.21.06.002. Quality aftermarket straps allow complete personalisation of the watch's look while maintaining technical integrity. Choose manufacturers that guarantee Swiss-quality spring bars for maximum reliability.

The lifespan of a leather strap depends on the quality of the material and daily use. Vegetable-tanned alligator lasts 3-5 years with regular wear; shell cordovan can last up to 7-10 years thanks to fibre density. Vegetable-tanned calf has a lifespan of 2-4 years. The Casati Milano atelier guarantees 18 months on bespoke straps, and periodic replacement is part of the watch's natural maintenance.