The Cartier Ballon Bleu reference WE902031 is a 36mm timepiece in Steel presented in used condition, with a Silver Diamond dial, Smooth bezel, Steel and Rose Gold bracelet. This piece is customized — aftermarket-modified (setting or dial added outside the manufacturer); not original factory condition. Every watch is inspected and authenticated by our specialists before it is offered, so you can buy with confidence.
Since its 2007 debut, the Ballon Bleu has stayed Cartier's most commercially enduring contemporary line. The recessed sapphire cabochon and softly cushioned case give it an unmistakable presence across dress and casual settings. Production grew swiftly across sizes and metals, with skeleton and tourbillon versions following within the first decade. The foundational steel and two-tone quartz references trade most actively and offer the gentlest way in. Read the full Ballon Bleu buying guide ›
Few jewelers crossed into watchmaking as convincingly as Cartier. Founded in Paris in 1847, it dressed royalty before its cases, the Santos, Tank and Ballon Bleu, became collector touchstones. The appeal here is design, not movement innovation. For reassurance, focus on full-set Tank or Santos, which hold value well, and have skeletonized or gem-set pieces assessed for condition and rarity. Every watch passes through in-house authentication first. Browse all Cartier ›
Cartier · WE902031
Customized — aftermarket-modified. Diamond setting or dial added outside the manufacturer; not original factory condition.
A 36mm Steel Cartier Ballon Bleu with a Silver Diamond dial, Smooth bezel — authenticated and ready to wear. Carries an aftermarket diamond setting — not original factory condition.
