The Ref. 5990/1A-011 Nautilus Travel Time chronograph stands out in Patek Philippe’s steel collection. It features a new sunburst blue dial with a subtle black gradation.

Powered by the self-winding Caliber CH 28-520 C FUS, this model combines a flyback chronograph, Travel Time function (with two time zones and a skeletonized home time hand), and an analog date synchronized with local time.

The watch has a 40.5 mm steel case, is water-resistant to 30 meters, and includes a sapphire crystal case back. It has a steel bracelet, a patented fold-over clasp, and a lockable adjustment system.