Skip to main content
  1. Home
  2. Wearables
  3. News

The Zenith Defy Lab lays claim to be the world's most accurate mechanical watch

Add as a preferred source on Google

Swiss watchmaker Zenith recently revealed its new Defy Lab, which it claims is “the world’s most accurate mechanical watch” according to a press release from parent company LVMH Moët Hennessy Louis Vuitton. Top brass from LVMH hosted a press conference in Le Locle, Switzerland, where the Zenith Defy Lab was presented as “both an evolution and an improvement on the balance and hairspring regulator invented in January 1675 by the scientist Christiaan Huygens.” Huygens invented the pendulum clock and was instrumental in the development of other timekeeping devices.

The timepiece owes its timekeeping prowess to a “groundbreaking oscillator.” Measuring .5mm in thickness, the oscillator replaces the usual balance-and-spring assembly. The Caliber ZO 342 oscillator vibrates at at 15 Hz, “which is faster (a good thing) than the vast majority of mechanical watches out there,” according to aBlogtoWatch. This is also three times the frequency of Zenith’s El Primero movement, itself already a benchmark in accuracy.

Zenith Defy Labs mechanical watch
Zenith
Zenith

The one-piece oscillator is made from monocrystalline silicon, and replaces the standard 30-piece mechanism, which simplifies assembly and reduces the wearing out of components. If you want complete lack of movement, check out our comparison of three top smartwatch models.

Recommended Videos

The Defy Lab daily rate is precise to .3 seconds, and hit has a 60-hour power reserve. To put this in perspective, for a watch to receive Contrôle Officiel Suisse des Chronomètres (COSC) certification, a time piece must have a daily accuracy between -4 and +6 seconds. Just 3 percent of Swiss watches are COSC certified.

This mechanical timepiece is resistant to changes in temperature, gravity, and magnetic fields.

The case is made from Aeronith, an aluminum composite that is “2.7 times lighter than titanium, 1.7 times lighter than aluminum and 10% lighter than carbon fiber,” as reported by Forbes.

The Defy Lab is beyond the concept stage and has been made in a series of 10 introductory pieces, which have all been sold. It was made in a series of 10 introductory pieces, all of which have been sold, but it is expected to see production in 2018. It is priced at 29,900 Swiss francs, which works out to about $31,000 USD at current exchange rates.

This is no smart watch, but if you like the looks of a classic watch combined with smart functionality, there is a timepiece out there for you.

Albert Khoury
Former Weekend Editor
Al started his career at a downtown Manhattan publisher, and has since worked with digital and print publications. He's…
Google could soon let you unlock your Pixel Watch with your phone
An in-development feature could flip the current Watch Unlock feature, letting an authenticated phone unlock the watch automatically.
Google Pixel Watch 4 in black in the hand

If you've set up a PIN on your Pixel Watch, you already know the prompt that shows up every time you slip it back on your wrist. It's a useful security measure, but entering a PIN on that small screen multiple times a day gets old fast. A new report suggests Google may be working on a way to let you skip it.

Watch Unlock in reverse

Read more
A new iPhone app can sniff out Meta smart glasses lurking nearby
Your iPhone can now keep an eye on the glasses keeping an eye on you
The Ray-Ban Meta smartglasses and case.

Android users got an unusual privacy tool earlier this year that could alert them when smart glasses were nearby. Five months later, iPhone owners finally have something similar, and its name makes its feelings about Meta pretty obvious.

AntiZuck is a $2.99 iPhone app that scans for Bluetooth signals associated with smart glasses and alerts you when it thinks one is close. It supports devices including Meta Ray-Bans, Snap Spectacles, Amazon Echo Frames, and RayNeo glasses, while the developer says additional hardware is being added.

Read more
Apple’s smartwatches will look the same for at least another year, or two
Apple's Series 12 and Ultra 4 are reportedly skipping a redesign this year, leaving chip upgrades and health tracking to carry the entire generation.
Apple Watch Series 11 on home screen.

For the last few years, every single Apple Watch has looked identical to the last. The Apple Watch Series 11 shared its dimensions and looks with the Watch 10, and the Watch 10 with the Watch 9. Turns out that streak might not break in 2026 either.

So what's actually changing this year?

Read more