Plunge into the heart of the world’s most accurate mechanical watch.
On 14 September 2017, Zenith unveiled a new watch which it proudly claims marks an epoch in watchmaking history, by overturning the fundamental principle of the spring balance – the regulating organ for mechanical watches perfected by Christiaan Huygens in 1675, and now in use for 342 years. In the Defy Lab, the traditional regulating organ is replaced by an innovative oscillator, which beats at the extremely high frequency of 15 Hz (108,000 vph). As a result, the accuracy of the watch is an average 0.3 seconds per day.
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