Meet Jean Dunand Tourbillon Orbital Watch

Dec 15, 2010
The Tourbillon Orbital watch is a groundbreaking timepiece from Jean Dunand relevant to the range of Unique Timepieces.

The Jean Dunand Tourbillon Orbital watch boasts a one-minute flying tourbillon orbiting the dial once per hour on a revolving movement patented by the brand. The timepiece also shows off an innovative power-reserve indicator in the case-band. Watch lovers may enjoy a full view of the movement as well as the moon phases presented by the case-back.

Thierry Oulevay and Christophe Claret stunned the world of watchmaking by the IO200 manually-wound rotating movement that received its name after Jupiter’s moon. The movement proved that their fellow watchmakers who believed that it was impossible to create an orbiting tourbillon were wrong. It is remarkable that timing tests show that the joined rotation of the tourbillon and the movement considerably improves the rate stability of the timepiece.

The 215 part movement, with the balance frequency of 21, 600 alternations per hour, offers 110 hours of power-reserve.

Christophe Claret required two years to find the solution of winding and setting a constantly rotating movement with a mainspring barrel. It was impossible to use the conventional crown through the caseband. The watchmaker came up with a new solution - an innovative folding key set vertically into the movement’s central axis via the case-back and responsible for both winding the mainspring and setting the time.

When you lift the D-ring of the key, you engage a central wheel on ball bearings that turns the ratchet-wheel to wind the barrel-spring. When you pull out the key, you engage the hour and minute hands so that to set them in any direction. Found against the fixed chapter-ring, the minute hand turns with the rotating dial.

As the case lacks the 3 o’clock crown, it boasts two windows in the case-band offering a fine lateral view of the revolving mechanisms.

As for the power reserve display of the Jean Dunand watch, it is worth special attention. You will see a window at 3 o’clock in the case-band with a vertical needle moving between F (full) and E (empty). It will make you think of fuel gauges in vintage cars.

The 45mm case of the Jean Dunand Tourbillon Orbital watch is crafted from 18k rose gold, white gold or platinum. The face is shielded by a non-reflecting domed sapphire crystal. The case also incorporates two domed sapphire crystals in the case-band and one domed sapphire crystal in the case-back. It is 30-meter water-resistant.

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posted by: / Dec 15, 2010

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