Introduction

5726/1A
- Nautilus
Self-winding

A new blue dial shading to black for the steel version

The steel Nautilus, endowed with an Annual Calendar and moon-phase display, now features a new blue dial inspired from the dial color of the original Nautilus model of 1976. Horizontal embossing and subtle grading from blue to black at the dial’s periphery create a powerful yet refined aesthetic that perfectly complements the sheen of the metal.

This elegantly sporty exterior, water-resistant to 30 m, conceals a caliber 26‑330 S QA LU 24H self-winding movement comprising 339 parts, which can be admired through a sapphire crystal case back.

Watch
Self-winding mechanical movement. Caliber 26‑330 S QA LU 24H/441. Annual Calendar. Day and month in apertures. Date by hand. Moon phases. 24-hour indication. Sweep seconds.
Dial
Blue, black gradated, gold applied hour markers with luminescent coating.
Case
Steel. Case diameter (10-4 o’clock): 40.5 mm. Height: 11.3 mm. Water-resistant to 30 m. Screw-down crown. Sapphire crystal case back.
Bracelet
Steel. Patented fold-over clasp with lockable adjustment system.
Price :

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Patek Philippe Ref. 205.9057G-001
205.9057G
White Gold
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Other versions

5726/1A-014
Stainless Steel
5726A-001
Stainless Steel

Caliber

26-330 S QA LU 24H/441
Self-winding

Patek Philippe Caliber 26-330 S QA LU 24H/441 - Front
Front Back

26-330 S QA LU 24H/441
Self-winding

Annual Calendar. Day and month in apertures. Date by hand. Moon phases. 24-hour indication. Sweep seconds. Diameter: 33.3 mm. Thickness: 5.8 mm. Number of parts: 339. Power reserve: min. 35 hours - max. 45 hours. Winding rotor: 21K gold central rotor. Frequency: 28,800 semi-oscillations/hour (4 Hz).

Settings

How to set the moonphase indicator?

Month
Day
Year
Calculate
Reset
Calculate
Reset
fullmoon calendar
fullmoon calendar
fullmoon calendar
fullmoon calendar
fullmoon calendar
fullmoon calendar
fullmoon calendar
A disc, decorated with golden stars and two golden moons against a blue or white background representing the sky, rotates within an aperture. The disc is cut from a wafer of corundum crystal (sapphire).

Gold was condensed onto the disc by means of a vacuum process through a photographic mask to create the shape of the moons and stars.  The aperture is cut at its upper edge in order to represent the lunar cycle.

During the first days of each lunation, the leading edge of a golden moon becomes visible as a crescent on the left of the aperture and appears to wax as it emerges beyond the curved edge of the aperture representing the lunar terminator.

Half way through the lunation, the moon appears full. It then wanes as it disappears behind the terminator on the right of the aperture.

As the moon vanishes, the second moon on the disc is ready to appear on the left.

Other models

5712/1A-001
Stainless Steel

Savoir faire

Minute repeaters
Q&A with Thierry Stern

In this exclusive interview, Thierry Stern talks openly of his affection for minute repeaters - his favorite of all the complications. From his earliest childhood memories through to his vision of future developments, he reaffirms the personal contribution that he insists on making with every minute repeater timepiece that is created by Patek Philippe - just as his father, his grandfather and his great-grandfather did.

Q&A with Thierry Stern

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