Cartier
Calibre de Cartier W2CA0004— lug 20mm
Cartier Calibre de Cartier W2CA0004: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Cartier W2CA0004The essential strap measurement.
Browse 20mm straps →W2CA0004
Cartier caliber 1904-PS MC Hours, Minutes, Small Seconds | Date
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Calibre de Cartier
FAQ
What is the exact lug width of the Cartier Calibre de Cartier W2CA0004?
The lug width of the Cartier Calibre de Cartier W2CA0004 measures 20.00mm. To verify correctly, use a digital caliper positioned on the inner shoulders of the spring bar (the metal component that secures the strap to the case). This dimension is proportionate to the 42mm case diameter and provides access to a wide range of quality aftermarket straps.
Which strap should I pair with the Cartier Calibre de Cartier W2CA0004?
The ideal strap depends on the aesthetic you wish to develop. For formal elegance, burgundy or dark brown alligator enhances the rose gold case, creating deep color harmony. Vegetable-tanned calf develops a patina that parallels that of rose gold over time. For dynamic wear, FKM rubber with a deployant clasp provides grip and durability. In summer, woven calf in sand or taupe tones adds lightness while maintaining refinement.
How do I change the strap on my Cartier Calibre de Cartier W2CA0004?
Changing the strap requires removing the spring bar (the metal spring component that runs through the lugs of the case). Position the watch on a soft surface, locate the small groove in the spring bar body, carefully insert a flat tool (spring bar tool) into the groove, and push laterally until the spring bar releases from one side of the case. Repeat on the other side. Remove the old strap and insert the new one by positioning the spring bar ends in the lug holes. If you are unsure, consult an expert: Casati Milano offers this service.
Can I use an aftermarket strap on the Cartier Calibre de Cartier W2CA0004?
Absolutely. The W2CA0004 accepts any quality 20mm strap made to artisanal standards. Milano Straps offers online a selection of compatible straps in alligator, calf, crocodile, and rubber, all customizable in size, initials, and thread color. The spring bar is universal for this lug width, so changing is quick and requires no case intervention.
How long does a leather strap last on a Cartier Calibre de Cartier W2CA0004?
The durability of a leather strap depends on material quality and intensity of use. Premium alligator or calf, worn daily with care, maintains structural and aesthetic integrity for 3-5 years. The patina that develops is desirable, not a defect. Moisture, excessive heat, and prolonged water contact reduce longevity. FKM rubber resists degradation for over 7 years. Casati Milano provides an 18-month warranty on custom straps, including any adjustments needed.
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.
Request an appointment →By appointment only · Milan
The atelier's website: casatimilano.com