The smoky grey dial of this 40.5mm steel Nautilus creates a sophisticated interplay with the brushed and polished surfaces of the integrated bracelet, defining the visual character of the Patek Philippe 5990/1A-001. This dual-time chronograph represents one of the most technically accomplished expressions in the modern Nautilus lineup, combining the collection's signature porthole aesthetic with the complexity of a flyback chronograph and GMT function. The reference 5990/1A-001 houses the manufacture CH 28-520 C FUS movement, visible through the transparent sapphire caseback, while maintaining the sports watch practicality that has made this configuration highly sought after among collectors who appreciate both horological sophistication and everyday wearability.

Key Features & Specifications

• Flyback Chronograph Function — The CH 28-520 C FUS caliber enables instant chronograph reset and restart with a single pusher activation, eliminating the traditional stop-reset-start sequence for timing consecutive events
• Travel Time Complication — Independent local hour hand adjustment via crown positions allows seamless timezone changes without disrupting the chronograph or home time display, ideal for frequent travelers
• Signature Grey Dial Configuration — The sunburst grey dial features applied gold hour markers and hands with luminous coating, complemented by white chronograph subdials at 3, 6, and 9 o'clock positions
• Integrated Steel Bracelet Design — The brushed and polished steel bracelet flows seamlessly from the 40.5mm octagonal case, secured by the signature Nautilus fold-over clasp with safety mechanisms
• Rounded Octagonal Bezel — The distinctive porthole-inspired bezel maintains the Gerald Genta design DNA while housing the complex movement within a 120-meter water-resistant case
• Transparent Caseback Display — Sapphire crystal exhibition caseback reveals the decorated automatic movement with its gold rotor and intricate finishing details
• Complete Documentation — Accompanied by original box and papers, providing full provenance and authenticity verification for this reference 5990/1A-001

About This Timepiece

• Bracelet Sizing — Complimentary bracelet sizing included with every purchase. Contact us with your wrist measurement and we'll have it ready before shipping.
• Authenticity Guarantee — Every watch is thoroughly inspected and authenticated by our team of certified horologists. 100% authentic, guaranteed.
• Warranty — New model watches include a 1-year mechanical warranty covering manufacturing defects. All watches include our confidence guarantee.
• Shipping — Free insured overnight FedEx shipping on all orders. Fully insured, signature required, discreet packaging.

Contact Us

Questions about this timepiece? Our specialists are available to help.
Phone/Text: (310) 363-0481
Email: chris@chronocandy.com

Chrono Candy is an independent luxury watch dealer and is not affiliated with Rolex S.A., Rolex USA, Patek Philippe, Audemars Piguet, Cartier, Omega, Tudor, or any brands listed.