Cartier Rotonde de Cartier Watch W1556210

45mm platinum case, 12.45mm thick, circular grained platinum crown set with a sapphire, sapphire crystal, slate gray guilloche dial with silvered openwork grid with sunray effect, and transfered black Roman numerals, caliber 9454 MC manual movement, approximately 52 hours of power reserve, black alligator strap, deployant buckle in 18K white gold. Water resistant to 30 meters.