The Cartier Santos is an iconic watch collection known for its square case, exposed screws on the bezel, Roman numeral dial, and often featuring a blue cabochon crown. Originally designed for aviator Alberto Santos-Dumont in 1904, the Santos collection embodies a blend of classic elegance and innovative design. For the latest models and detailed information, it is advisable to check Cartier’s official website or consult with authorized Cartier dealers.