caliber 324 S QA LU self-winding movement with annual calendar
41 mm stainless steel case
Caliber: CRMA5
white lacquered dial with black Roman numerals
matt black dial with diamond hour markers
Cartier Tortue Perpetual Calendar Watch - 45.6 mm White Gold Case - Black Alligator Strap - W1580048 Tortue caliber 324 S QA LU45. 6mm x 51mm 18K white gold case, 16mm thick, sapphire back, octagonal crown set with a sapphire, sapphire crystal, slate dial with openwork satin brushed silvered grid, sunray finish, black transferred Roman numerals, snailed counter, apple shaped blued steel hours and minutes hands, caliber 9422 MC automatic movement , perpetual calendar with days displayed by a retrograde hand, and months and leap years in a counter at 12 o'clock, approximately