Patek Philippe Nautilus Self-Winding Travel Time Chronograph - 40.5 mm Rose Gold Case - Blue Dial - Rose Gold Bracelet - 5990/1R-00140. 5 mm rose gold case, 12. 53 mm thick, sapphire crystal back, screw down crown, sunburst blue dial with gold applied hour markers with luminescent coating, caliber CH 28 520 C FUS self winding movement with flyback chronograph, central chronograph hand, 60 minute counter, two time zones: local and home time indication, day night indication for local time and home time in apertures, date coupled with local time by hand, approximately 45 55 hours of