Cartier Rotonde de Cartier Perpetual Calendar Chronograph Watch - 42 mm White Gold Case - W1556226

42mm 18K white gold case, 14.9mm thick, circular grained in 18K pink gold crown set with a sapphire, sapphire crystal, white dial with galvanized guilloche dial, silvered openwork grid with sunray finish and black transferred Roman and Arabic numerals for the months and days of the week, caliber 9423 MC manual movement, approximately 48 hours of power reserve, black alligator strap, double adjustable deployant buckle in 18K white gold. Water resistant to 30 meters.