Cartier Calibre de Cartier Chronograph Watch - 42 mm Pink Gold Case - Silver Dial - Brown Alligator Strap - W710004442 mm by 12. 6 mm thick 18K pink gold case, heptagonal crown set with a sapphire, 18K pink gold bezel with rail track, sapphire crystal, silver dial with partly snailed opaline, pink gold finish chamfers and luminescent sword shaped black oxidized steel hands, caliber 1904 CH MC automatic movement with chronograph and calendar aperture at 6 o'clock, brown alligator strap, 18K pink gold ardillon buckle double deployant. Water resistant to 100 meters.