Meet Cartier Ballon Blue de Cartier (ref. WJBB0009), a refined timepiece that blends thoughtful design with reliable performance. A study in proportion and durability: crafted in pink gold and measuring 36.6 mm in diameter, with a thickness of 12.05 mm, defined by a round silhouette, paired with a gem-set bezel. The caseback is closed, and the crystal is sapphire, delivering water resistance to 3000 meters. The dial composition is deliberate and legible: a silver tone with guilloche finish, framed by roman numerals hour markers, and sword hands. Beneath the caseback lies dependable performance: the 049 No Date caliber. Initial production year: 2007. Comfort and balance define the wearing experience, making it an easy daily companion. Subtle transitions between textures elevate the overall impression. For buyers researching specifications and real-world impressions, this reference stands out for coherent design, dependable mechanics, and lasting relevance within modern horology.