Cartier · Ballon Blue de Cartier

Strap for Ballon Blue de Cartier 42 White Gold / Diamond

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Cartier Ballon Blue de Cartier WE902049 is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter42 mm
ReferenceWE902049
FamilyBallon Blue de Cartier
MovementCartier caliber 049 Hours, Minutes, Seconds | Date
CaseWhite Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Ballon Blue de Cartier WE902049, seen from the bench

The Ballon Bleu de Cartier WE902049 is a 42mm white gold model featuring a distinctive three-dimensional case with a sapphire cabochon protected by a metal arch. Presented in 2007, this timepiece requires custom strap craftsmanship to accommodate its curved integrated lugs and convex case profile. Milano Straps offers bespoke strap solutions through Atelier Casati Milano, featuring premium materials such as midnight blue Mississippi alligator or pearl grey Swift leather, hand-curved to match the watch's architectural design.

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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Casati Milano · Via XX Settembre 15, Milan · by appointment only