====== Resonance chronometer ======
{{wst>image_cl|F. P. Journe|Chronomètre à Résonance RS|[[F. P. Journe Chronomètre à Résonance]] (back)\\ with **resonance chronometer**}}

A **resonance chronometer** is a rare [[complication]].

The resonance [[chronometer]] consists of two largely independent watch [[movement]]s which are coupled only by a common [[balance staff]] and by their resonance If the half-cycle of one [[balance wheel]] slows, the other is accelerated - and vice versa. The distance between the two balances is only half a millimeter.

[[Harry Winston]] realized this principle, which [[F. P. Journe]] had first adapted for the [[wristwatch]], in [[2001]] in the series model [[Harry Winston Opus One|Opus One]]. Around the same time Journe also offered this specialty for watch connoisseurs within his own model range the [[F. P. Journe Chronomètre à Résonance]].

Also, the master watchmaker [[Philippe Dufour]] realized a resonance chronometer with his model [[Philippe Dufour Duality|Duality]].

===== Video =====
  * [[F. P. Journe Chronomètre à Résonance Video]], 3 08


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