Ad
Ad
Ad
Ad
Ad
Ad
Reading time 3 min.

Off the Chain: The Zenith Defy Fusée Tourbillon

DSC_2232
© PR

The fusée and chain mechanism has held its place in horological history since the 15th century as the equalizer which evened out the pull of the mainspring. Its purpose? To improve the precision of timekeeping throughout the entirety of a watch's power reserve. Zenith has long been a well-regarded name when it comes to implementing the constant force of the fusée and chain system in its timepieces. We are, of course, talking about the Zenith Academy Georges Favre-Jacot watch. Named after the founder of the Le Locle-based brand, the timepiece was recreated in 2016 to commemorate 150 years since Zenith's inception.

Fast forward to 2019 and the new Defy Fusée Tourbillon has been introduced as an avant-garde attempt by the brand to modernize the movement architecture of the “constant force” mechanism by combining it with a tourbillon. Available in two distinct case materials in carbon and platinum — both sized at 44 mm — the latest addition to the Defy collection features the manual-winding El Primero 4805 SK caliber.
DSC_2239
© PR
The caliber features an integrated fusée and chain mechanism visible in the upper portion of the dial. The chain consists of 575 individually hand-assembled components in a very bold blue hue. At the 6 o'clock position, a new tourbillon cage design for Zenith can be found with an off-centered balance wheel that makes a full rotation every 60 seconds. The tourbillon cage matches the vibrant color of the fusée and chain. To the right of the tourbillon cage is a red-tipped power reserve indicator that showcases the 50 hours of running autonomy.
DSC_2226
© PR
The first version of the Defy Fusée Tourbillon comes in a lightweight carbon case, crown, and buckle head. The open dial features a carbon fiber treatment including the central skeletal element. Limited to 50 pieces, the carbon watch sits comfortably on a black rubber strap with a “Cordura” fabric effect and blue stitching. Price: $80,900
DSC_2235
© PR
The second platinum version, limited to 10 pieces, offers a vibrant view of the open dial in anthracite and blue. The strap is made of a black rubber core coated with black alligator leather. Price upon request. All images by Petro Onysko A version of this article first appeared on WatchTime India
Archiv

Latest Articles

Glashütte Original Launches Two SeaQ “Northern Tide” Limited Editions for North America - A turquoise tide rolls into the SeaQ collection
Glashütte Original gives the SeaQ and SeaQ Panorama Date a turquoise-to-black dégradé dial in two North America-exclusive limited editions of 100 pieces each.
3 minutes
Jul 31, 2026
Nomos Glashütte Brings a Fresh Shade of Green to the Tangente neomatik 38 Update - The patented ring-date display gets a rich new colorway
Nomos Glashütte adds a forest-green dial to the Tangente Neomatik 38 Update, pairing its patented ring-date display with the ultra-thin DUW 6101 caliber.
3 minutes
Jul 31, 2026
Doxa Brings Grade 5 Titanium Back to the SUB 300 for Clive Cussler Edition - The 300-piece edition adds a layered titanium dial
Doxa marks Clive Cussler’s 95th birthday with the SUB 300 Ti5, pairing a Grade 5 titanium case with a new two-layer dial and COSC-certified movement.
3 minutes

You might also be interested in

A Look Inside: The Best Skeleton Watches of 2026 - Seven standout open-worked watches
Skeleton watches show just how diverse open-worked mechanics can be in 2026: sporty, ultra-thin, boldly colorful, or highly complicated. Our selection ranges from the accessible Ba111od to highly exclusive creations from Hublot, Hermès, and H. Moser & Cie.
6 minutes
Jul 17, 2026
Meet the Zenith Chronomaster Original Paris Edition - A tribute to the City of Lights
Limited to 50 pieces and available exclusively in France, the new Chronomaster Original Paris Edition combines the heritage of the El Primero chronograph with a verdigris-green dial inspired by Parisian architecture and urban perspectives.
3 minutes
Jul 14, 2026
Diamonds and Delights: Exploring the Craftsmanship Behind Diamond-Set Watches
Diamond-set watches blend high jewelry with horological craftsmanship. From sourcing rare stones to the precision of invisible settings, this feature explores the technical mastery and aesthetic considerations that go into adorning timepieces with diamonds.
8 minutes
Jul 22, 2026
Ad
Ad
Ad
Ad
Ad