Cartier's Ballon Bleu reference W69017Z4 presents the collection's signature silhouette in a 36.6mm steel case measuring 12.05mm thick. The fluted crown is decorated with a synthetic spinel cabochon — a subtle flourish that has come to define the Ballon Bleu identity — while a sapphire crystal protects the dial beneath.
The silvered guilloché opaline dial is laid out with Roman numerals and fitted with blued-steel sword-shaped hands, delivering a classical sense of legibility and elegance. Inside, a mechanical movement with automatic winding keeps the watch running reliably day to day. The case is water-resistant to 3 bar, approximately 30 meters or 100 feet.
Completing the piece is an alligator-skin strap secured by a double adjustable folding steel buckle, offering a comfortable and secure fit on the wrist. Reference W69017Z4 is a versatile expression of the Ballon Bleu in a size well suited to a wide range of wearers.