The Cartier Ballon Bleu is a women's luxury watch with an automatic movement, model number W3BB0007. It features an elegant silver dial accented by polished blue hands and diamond Roman numeral hour markers set against a polished 18K rose gold bezel rimmed with minute markers. The case combines polished 18K rose gold and stainless steel construction. Supplied with an authentic polished stainless steel folding clasp band matching the bezel finish. Luminous markers for optimal legibility, round shape measuring 36mm diameter at a thickness of 12mm. Secure solid case back closure protects internal components including the Calibre 076 engine known for its Swiss automatic movement and providing up to 38 hours power reserve. Essential functions display hour and minute readings; includes push-pull crown access with water resistance rated at 30 meters or approximately 100 feet depth.