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Christiaan van der Klaauw Astronomical Watches
Real Moon Joure Mother of Pearl with its three-dimensional Moon

Astronomical Masterpiece - CKRJ3394

CVDKReal Moon Joure Mother of Pearl

The CVDK Real Moon Joure Mother of Pearl combines one of CVDK’s most precise astronomical complications with the natural variation of mother-of-pearl. A rotating three-dimensional Moon reproduces the true lunar phase with a deviation of only one day in 11,000 years, while the iridescent dial changes subtly with the light. The watch is housed in a 40 mm stainless steel case with a black ostrich foot leather strap.

Light aroundthe Moon

No two mother-of-pearl surfaces appear exactly alike. Its natural layers reflect light in changing tones, giving the dial a character that shifts with the angle from which it is viewed.

Within this changing surface, the three-dimensional Moon provides a more literal expression of the same relationship between light and shadow. As it rotates through its 29.530588853-day cycle, its visible illuminated surface changes to reproduce the true lunar phase.

Real Moon Joure Mother of Pearl, detail 1
Real Moon Joure Mother of Pearl, detail 2
Real Moon Joure Mother of Pearl, detail 3
Real Moon Joure Mother of Pearl, detail 4
Real Moon Joure Mother of Pearl, detail 5
Real Moon Joure Mother of Pearl, the hours, minutes and three-dimensional Moon

Specifications

The Real Moon Joure keeps its indications deliberately focused: hours and minutes are accompanied by a rotating three-dimensional Moon. Its mechanical construction translates the lunar cycle directly into the changing visible phase of the miniature Moon.

Time
Hours & minutes
Astronomical
3D Moon Phase
Accuracy
1 dayin 11,000 years
The CKM-01 Manufacture movement through the sapphire caseback

Caseback

At the heart of the Real Moon Joure is the automatic CKM-01 Manufacture movement. Its 60-hour power reserve supplies both the time indication and the dedicated astronomical module responsible for the exceptionally precise three-dimensional moon phase.

Power reserve
60Hours
Winding
Automatic
Jewels
32
Real Moon Joure Mother of Pearl CKRJ3394, front

The most accurate 3D moon phase

The Real Moon Joure approaches the lunar cycle through a physical miniature of the Moon itself. As the sphere rotates, the changing boundary between its illuminated and shadowed surfaces reproduces the moon phase in three dimensions.

The mechanism is calculated around the Moon’s 29.530588853-day cycle and accumulates a deviation of only one day in 11,000 years. This precision makes it the most accurate mechanical 3D moon phase in the world. In 2014, the Real Moon Joure was unanimously awarded European Watch of the Year by an international jury in London.

Other CVDKReal Moon Joure models

Made in theCVDK atelier

Every Christiaan van der Klaauw watch is made by hand and subjected to extensive quality testing in the atelier. Each watch is delivered in a CVDK presentation box and covered by a three-year warranty on the movement and case. Watches from the Collection of Astronomical Masterpieces are also supplied with a removable Swiss Kubik watch winder to keep the astronomical complication running accurately.

Discover our Manufacture

AstronomicalMasterpieces

Explore the Collection of Astronomical Masterpieces and the mechanical interpretations of astronomy at the heart of Christiaan van der Klaauw.

View the collection