The Ref. 5990/1A-011 Nautilus Travel Time chronograph is one of Patek Philippe’s rare steel watches. It features a new blue dial with a ray sunburst dial and a delicate black gradation to the periphery.

Watch

• Self-winding mechanical movement
• Caliber CH 28‑520 C FUS
• 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

Dial

• Sunburst blue with black-gradient rim, horizontally embossed, gold applied hour markers with luminescent coating

Case

• Steel
• Case diameter (10 - 4 o’clock) : 40,5 mm
• Height : 12,53 mm
• Water-resistant to 30 m
• Screw-down crown
• Sapphire crystal case back

Bracelet

• Steel
• Patented fold-over clasp with lockable adjustment system