This Cartier Ballon Bleu, reference WE902031, is a 36mm case in Steel used condition, featuring a Silver Diamond dial, a Smooth bezel, a Steel and Rose Gold bracelet. This piece is customized — aftermarket-modified (setting or dial added outside the manufacturer); not original factory condition. Priced dealer-direct and shipped fully insured.
The Ballon Bleu (2007) is Cartier's most durable modern seller — floating sapphire-cabochon crown sunk into a cushioned round case, instantly readable across the room. Wide size run, quartz or automatic. 36mm is the liquid unisex size, and movement type is the main lever on price. Read the full Ballon Bleu buying guide ›
Founded in Paris in 1847, Cartier built its reputation as jeweler to royalty before becoming a cornerstone of fine watchmaking. Its horological identity rests on iconic case architectures — the Santos, Tank, and Ballon Bleu — rather than in-house movement innovation. Cartier occupies a rare dual position: respected in haute joaillerie and taken seriously by watch collectors, particularly for dress and jewelry watches. Browse all Cartier ›
Cartier · WE902031
Customized — aftermarket-modified. Diamond setting or dial added outside the manufacturer; not original factory condition.
Cartier Ballon Bleu, Steel, 36mm case, Silver Diamond dial, Smooth bezel. Custom / aftermarket-modified — not original factory condition.

