Cartier · Ballon Blue de Cartier
Strap for Ballon Blue de Cartier 36 Automatic Stainless Steel / Pink Gold / Diamonds / Bracelet
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
18mm
Lug width18 mm
Case diameter37 mm
ReferenceWE902078
FamilyBallon Blue de Cartier
MovementCartier caliber 049 No date hours, minutes, seconds
Year2007
CaseRose Gold, Stainless Steel
Straps for the Ballon Blue de Cartier WE902078
Selected for the 18 mm lug width · workshop selection
Millenium Cognac Alligator Strap€195
Millennium Green Alligator Strap — Minimal Stitching€149
Matte Blue Alligator Strap€195
Grey Hammered Leather Strap with Ecru Stitching€98
Vintage Olive Green Calf Leather Watch Strap€80
The Ballon Blue de Cartier WE902078, seen from the bench
The Cartier Ballon Blue de Cartier ref. WE902078 is equipped with the automatic Cartier 049 caliber, featuring hours, minutes, and seconds display. The 36.60mm bimet case combines 18k rose gold with stainless steel, protected by a distinctive blue cabochon sapphire on the crown. The lug width is exactly 18mm, a critical specification for aftermarket strap selection that must not be approximated.
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 →Casati Milano · Via XX Settembre 15, Milan · by appointment only