Zenith’s Zero G concept was first introduced in 2008 but it has seen multiple iterations since then. In 2018 they produced a smaller, more compact version of the gyroscopic ‘gravity control’ mechanism and then in 2021 they created an openworked version that revealed more of its architecture – our founder Tom even went on a zero G experience with Zenith to witness the watch at work. Now, on the occasion of Zenith’s 160th anniversary, they are revisiting the 2021 model with an updated aesthetic for a limited edition, the Defy Zero G Sapphire for 2025.
In order to understand this release, you essentially need to take the 2021 model and the 160th anniversary capsule collection announced at Watches and Wonders that includes watches like the G.F.J and merge them together. What that gets you is a Zero G with royal blue as its signature colour. There are two versions, one in transparent sapphire with a blue display and the other which goes a step further by also having blue tinted sapphire for the case. Both measuring a broad 46mm in order to accommodate the ‘gravity control’ module.
What is a ‘gravity control’ module? Essentially, it’s the watch’s balance wheel except that it has been mounted on a gyroscopic gimble that means it remains horizontal to the plane of gravity regardless of the orientation of the watch. This means that the balance is always flat, so the effects of gravity on the escapement are constant, allowing the watchmakers regulate it in just one position and attain a super high level of precision. None of this ‘adjusted in 1,000 positions’ malarkey that most chronometers have to mess around with.
Getting into the specifics of the updated dials, the central time display and overlapping small seconds are made from lapis lazuli, flecked with golden pyrite. The lower plate with power reserve indicator is then blue as well with a vertically brushed finish, contrasting with the frosted finish on the other side of the display towards 9 o’clock. The gravity control module is then finished with a moon texture on its underside, which you’ll only see by raising the watch above your head.
The movement on display is the El Primero 8812S with 50-hour power reserve. As part of the El Primero series, it’s also a hi-beat movement with a frequency of 36,000 vph – higher frequency movements often having higher precision. It’s manual winding, so it lacks a little of the convenience of automatic calibres but the pay off for that is the regular ritual of winding, which helps to build a relationship to your watch. Plus with a power reserve indicator on the display, you have a handy reminder for when it needs to be topped up.
Each version of the Zenith Defy Zero G, the blue sapphire and transparent sapphire, is limited to 10 pieces at CHF 200,000 (approx. £186,825). Considering that the Zero G is a concept and design that is unique to Zenith, it’s nice to see it receive an update for their 160th anniversary.
Price and Specs:
More details at Zenith.
