Patek Philippe Nautilus 5726A-001 Annual Calendar Moon Phase Black Gradient Dial 40.5mm Stainless Steel Automatic Watch – 2026 New Full Set

Patek Philippe Nautilus 5726A-001 | Refined Annual Calendar Steel Watch

Basic Information

Movement

Case

Dial

Bracelet / Strap

Functions

• Hours and Minutes

• Central Seconds

• Annual Calendar

• Day Display

• Date Display

• Month Display

• Moon Phase

• 24-Hour Indicator

• Automatic Self-Winding

Included Accessories

Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial

The Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial is a sophisticated expression of luxury sports-watch design, combining the iconic Nautilus silhouette with one of Patek Philippe’s most practical mechanical complications.

Crafted from stainless steel, this distinguished timepiece features a beautifully proportioned 40.5mm case, an elegant black gradient dial, and a refined black leather strap.

The Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial incorporates an annual calendar, moon-phase display, and 24-hour indicator, bringing together sophisticated functionality and the recognizable design language of the Nautilus collection.

Powered by the automatic manufacture caliber 324 S QA LU 24H/303, the watch reflects Patek Philippe’s expertise in developing refined mechanical complications for everyday use.

This particular example is listed as new, with a stated 2026 production year, and is accompanied by its original Patek Philippe box and papers. The production year should be verified against the accompanying documentation.

Refined 40.5mm Stainless Steel Nautilus Case

The Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial features an elegant 40.5mm case crafted from stainless steel.

The steel construction provides a contemporary appearance while preserving the recognizable sporty sophistication of the Nautilus collection.

The case retains the signature rounded octagonal silhouette inspired by a ship’s porthole, complete with the distinctive lateral extensions that define the Nautilus design.

Its carefully finished surfaces combine satin-brushed and polished textures, highlighting the meticulous craftsmanship associated with Patek Philippe.

The 40.5mm proportions offer a balanced wrist presence, suitable for both formal occasions and sophisticated everyday wear.

A scratch-resistant sapphire crystal protects the dial, while the sapphire exhibition caseback reveals the intricately finished automatic movement.

The Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial combines durable stainless steel construction with refined architectural design.

Iconic Rounded Octagonal Stainless Steel Bezel

One of the defining features of the Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial is its distinctive rounded octagonal bezel crafted from stainless steel.

The bezel follows the recognizable architectural design language that has distinguished the Nautilus collection for decades.

Its gently rounded corners and carefully finished surfaces complement the contours of the case.

Alternating satin-brushed and polished finishes create an elegant interplay of light and texture.

Unlike rotating sports-watch bezels, the Nautilus bezel remains fixed, serving as a defining aesthetic element.

The cool metallic tones of stainless steel frame the dark gradient dial, creating a sophisticated contrast that reinforces the watch’s understated elegance.

Elegant Black Gradient Nautilus Dial

The centerpiece of the Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial is its sophisticated black gradient dial with horizontal Nautilus embossing.

The dial incorporates the collection’s recognizable horizontal pattern, creating subtle depth and texture.

Its dark gradient finish provides a refined backdrop for the applied baton hour markers and central hands.

The annual calendar indications are arranged across the upper portion of the dial, displaying the day, date, and month through dedicated apertures.

A moon-phase display and 24-hour indicator occupy the lower portion of the dial, creating a balanced and sophisticated composition.

The combination of dark dial tones, steel construction, and elegant calendar displays gives the Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial a distinctive identity within the Nautilus collection.

Sophisticated Annual Calendar Complication

The Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial incorporates Patek Philippe’s celebrated annual calendar complication.

Unlike a conventional date mechanism that requires manual correction at the end of shorter months, an annual calendar automatically distinguishes between months containing 30 and 31 days.

The mechanism generally requires only one manual calendar correction each year, at the transition from February to March.

The watch displays the day, date, and month through dedicated apertures, providing convenient calendar information at a glance.

This practical complication reflects Patek Philippe’s expertise in combining mechanical sophistication with everyday functionality.

The annual calendar transforms the Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial into a highly refined mechanical timepiece designed for practical daily use.

Moon Phase and 24-Hour Indication

In addition to its annual calendar, the Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial features a beautifully executed moon-phase display.

This traditional astronomical complication illustrates the changing phases of the moon, reflecting the longstanding connection between mechanical watchmaking and celestial observation.

The moon-phase indication is integrated into the lower portion of the dial alongside a 24-hour display.

The 24-hour indication provides additional time-of-day information, complementing the watch’s sophisticated calendar functionality.

These complications are carefully arranged to preserve the recognizable Nautilus aesthetic while enhancing the watch’s technical capabilities.

The combination of annual calendar, moon phase, and 24-hour indication distinguishes this reference from conventional luxury sports watches.

Manufacture Caliber 324 S QA LU 24H/303

Powering the Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial is the sophisticated Patek Philippe manufacture caliber 324 S QA LU 24H/303.

This self-winding mechanical movement combines precise timekeeping with advanced calendar functionality.

The caliber incorporates 34 jewels and operates at approximately 28,800 vibrations per hour.

Its power reserve ranges from approximately 35 to 45 hours, depending on operating conditions.

The movement powers the hours, minutes, central seconds, annual calendar, moon-phase display, and 24-hour indication.

Its automatic winding system harnesses energy from the natural movement of the wearer’s wrist.

Through the sapphire exhibition caseback, the intricate mechanical construction and refined decorative finishing can be appreciated.

The Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial demonstrates the manufacture’s expertise in integrating sophisticated complications within an elegant automatic movement.

Refined Black Leather Strap

The Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial is fitted with a sophisticated black leather strap.

The strap complements the dark gradient dial, creating a cohesive and understated appearance.

Its supple leather construction provides comfort while preserving the refined character of the Nautilus collection.

A stainless steel folding clasp secures the strap and complements the case material.

The leather strap configuration offers a distinctive alternative to the integrated metal bracelets commonly associated with the Nautilus collection.

This combination gives the Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial a particularly elegant character suitable for formal occasions and sophisticated everyday wear.

New Condition with Original Box & Papers

This particular Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial is presented in new condition.

The watch shows no signs of wear and is accompanied by its original Patek Philippe presentation box and original papers.

The supplied listing states a 2026 production year, although this should be independently confirmed from the accompanying documentation due to the reference’s earlier production history.

The exact warranty commencement date and applicable coverage should also be verified.

An Exceptional Nautilus Annual Calendar

The Patek Philippe Nautilus 5726A-001 Annual Calendar Black Dial combines a 40.5mm stainless steel case, elegant black gradient dial, sophisticated annual calendar, moon-phase display, 24-hour indicator, and automatic caliber 324 S QA LU 24H/303.

Its refined black leather strap and recognizable Nautilus architecture reinforce the watch’s sophisticated character.

For collectors seeking a new-condition Nautilus Annual Calendar with original box and papers, reference 5726A-001 offers an exceptional combination of elegant design, practical complications, and distinguished Swiss watchmaking craftsmanship.