While it lacks unnecessary writing or a date complication, the tachymeter remained, as well as the distinctive 3/6/9 lines on the minute sub-dial. Those were, at the end of the day, counterproductive to the task of simplification, but without them, the watch would lose almost any connection to the A273. Pursuing simplicity is, in our view, a good thing, but left unchecked it would inevitably lead to a uselessly blank dial. It must be balanced with other design goals.he dial itself had to be both understated yet have a charming, dynamic character that keeps it from ever becoming boring. The best way to accomplish that, we’ve found, is via a sunburst finish. A good sunburst finish, like this one, almost disappears in some light, appearing flat and non reflective, yet in other lighting, usually more direct, it comes alive with vibrant, brighter colors. In these photos, with a white light box and perfectly even lighting, the dial comes off almost as silver, but in most situations, it’s a more appreciable champagne, or as some have commented, cream.
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.