Rolex Yellow Gold Cosmograph Daytona 40 Watch - Dark Mother-Of-Pearl And Gold Crystal Diamond Dial - 116508 dkmd40mm 18K yellow gold case, screw down back, screw down crown and push buttons with Triplock triple waterproofness, fixed 18K yellow gold bezel with engraved tachymetric scale, scratch resistant sapphire crystal, dark mother of pearl dial, gold crystal subdials, diamond hour markers, Rolex calibre 4130 self winding movement with chronograph central second hand, 30 minute counter at 3 o'clock, and 12 hour counter at 9 o'clock, approximately 72 hours of