Watch reference library
Patek Philippe Nautilus Annual Calendar 5726/1A-014
In production 2019 to present.
The Patek Philippe Nautilus Annual Calendar 5726/1A-014 is a 40.5mm stainless steel watch with the calibre 324 S QA LU 24H, water resistant to 120 meters, made 2019 to present.
Specifications
- Case size
- 40.5mm
- Case material
- Stainless steel
- Bezel
- Rounded octagonal stainless steel bezel
- Dial
- Blue sunburst dial with a black gradient rim and horizontal embossed lines, day and month windows below 12, date at 6, and a moon phase display above 6
- Movement
- Caliber 324 S QA LU 24H, automatic
- Power reserve
- 45 hours
- Water resistance
- 120 meters
- Crystal
- Sapphire, with sapphire caseback
- Bracelet
- Integrated stainless steel bracelet with a fold-over clasp
The story
The Nautilus Annual Calendar, reference 5726, was introduced in 2010 as the first Nautilus to combine an annual calendar with a moon phase display, bringing genuine complication to Gerald Genta's 1976 sports watch design for the first time. The reference paired the Nautilus case with Patek's Caliber 324 S QA LU 24H, an automatic movement adding an annual calendar, which needs correcting only once a year at the end of February, along with moon phase and a 24-hour indicator to the base 324 movement architecture. The current dial configuration, 5726/1A-014, dates to 2019, when Patek Philippe discontinued the earlier black-dialed 5726/1A-001 and white-dialed 5726/1A-010 steel bracelet versions in favor of a blue sunburst dial with a black gradient rim, a look that echoes the tropical blue-to-black dial fade found on the original 1976 Nautilus reference 3700. Within the Nautilus family, the 5726 sits between the simpler three-hand 5711 and 5811 references and the more complex 5990 chronograph, giving buyers a calendar complication without moving into chronograph territory.
What to check before you buy
Confirm the exact dial reference, since 5726/1A watches were sold with black, white, and blue dials at different points, and the current blue-dialed 5726/1A-014 is the only steel bracelet version Patek currently lists, meaning the discontinued black and white dial versions can carry different demand and pricing on the secondary market. As with the standard Nautilus, bracelet stretch, clasp wear, and case polish history are worth checking closely given how much daily wear these bracelets typically see. Because the annual calendar mechanism should generally not be adjusted during the changeover window around midnight, ask whether the calendar functions have ever been forced or misadjusted.
Buying or selling a 5726/1A-014?
Selling one? Text photos to (605) 521-2821 for an offer within hours, or ask for one below. Moda pays by wire or Zelle within 24 hours of receiving the watch, on its own insured label. Rather sell it yourself? Post it in the Moda watch groups and run the listing through the Post Checker first. Buying one from someone you don't know? Moda's middleman service inspects the watch at Moda HQ and the buyer pays the seller only after approving the condition report. When it ships, it goes fully insured through ShipIFS, the shipping vendor Moda uses for its own watches.
A Serial Check tells you whether this 5726/1A-014 has been reported stolen and whether its dial and bracelet are the factory originals.
Moda Watch Club is the Moda group for luxury watches, and Moda Watch Club: 10K & Under covers watches below that line. Both are free to join with a join code.
Common questions
Is the Nautilus 5726/1A still in production?
Yes. The blue-dialed 5726/1A-014 remains part of Patek Philippe's current Nautilus collection as of 2026.
What happened to the black and white dial versions of the 5726/1A?
Patek Philippe discontinued the black-dialed 5726/1A-001 and white-dialed 5726/1A-010 in 2019, replacing both with the current blue-dialed 5726/1A-014.
What complications does the 5726 have?
It combines an annual calendar with day, month, and date, a moon phase display, and a 24-hour indicator, on top of standard hours, minutes, and running seconds.
How does the annual calendar differ from a perpetual calendar?
An annual calendar needs manual correction once a year at the end of February, while a perpetual calendar automatically accounts for varying month lengths and leap years without correction.
What movement is inside the 5726/1A?
The Caliber 324 S QA LU 24H, an automatic movement with a 45-hour power reserve that adds annual calendar, moon phase, and 24-hour functions to Patek's base 324 architecture.