Introduction

5712/1A
- Nautilus
Self-winding

With the rounded octagonal shape of its bezel, the ingenious porthole construction of its case, and its horizontally embossed dial, the Nautilus has epitomized the elegant sports watch since 1976. Forty years later, it comprises a splendid collection of models for men and women. In steel, rose gold, white gold or two-tone combinations they accompany the most active lifestyles with incomparable class.

Watch
Self-winding mechanical movement. Caliber 240 PS IRM C LU. Date by hand. Moon phases. Power reserve indication. Small seconds.
Dial
Black-blue.
Case
Stainless steel. Diameter (10–4 o’clock): 40 mm. Height: 8.52 mm. Water-resistant to 30 m. Screw-down crown. Sapphire crystal case back.
Bracelet
Steel bracelet. Patented fold-over clasp with lockable adjustment system.
Price :

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Other versions

Caliber

240 PS IRM C LU
Self-winding

Patek Philippe Caliber 240 PS IRM C LU - Front
Front Back

240 PS IRM C LU
Self-winding

Date by hand. Moon phases. Power reserve indication. Small seconds. Diameter: 31 mm. Thickness: 3.98 mm. Number of parts: 265. Bridges: 11. Jewels: 29. Power reserve: min. 38 hours - max. 48 hours. Winding rotor: off-center 22K gold minirotor. Balance: Gyromax®. Frequency: 21,600 semi-oscillations per hour (3 Hz). Balance spring: Spiromax®. Hallmark: Patek Philippe Seal. Patent: CH 595 653.

Settings

How to set the moonphase indicator?

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.

Savoir faire

Attention to details
Perfecting the bracelet

There are different types of bracelet: chain bracelets and the mechanically made bracelet. With the traditional chain bracelets each link used to be individually handmade, positioned, aligned, assembled, and soldered, which meant that completing a bracelet was a complicated process. These days the links of modern mechanical bracelets are produced by machine; however, assembly and finishing is always by hand, and it remains an intensive and satisfying job.

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