Zenith released its ‘Zenith Oscillator’ system in 2017 and the new Zenith Defy Inventor is their latest watch equipped with this technology. Beating at the extremely high frequency of 18 Hz or 129,600 vph —compared to the usual 4 Hz or 28,800 vph— and endowed with a comfortable two-day autonomy, the Defy Inventor owes its exceptional properties to its disruptive technology. The ‘Zenith Oscillator’ is a single-piece oscillator developed and patented by Zenith that maximizes chronometric precision, reliability and stability. This type of oscillator was conceived to replace the traditional spring balance used for more than three centuries.