Zenith Defy El Primero 21 Watch Review: Two Watches, One Stealthy Case

Join Bespoke Unit's Paul Anthony for an on-the-wrist look at the Zenith Defy El Primero 21. Watch our video to learn about this stealthy and slim-to-wear high-tech chronograph. READ ARTICLES: Zenith Brand History: https://bespokeunit.com/watches/zenith/ View all our latest watch reviews & guides: https://bespokeunit.com/explore/watches/ Bespoke Unit Watches Home: https://bespokeunit.com/watches/ Zenith Defy El Primero 21 Watch Review: Two Watches, One Stealthy Case: I've been very excited to test out this new Zenith 9004 Automatic movement. It's essentially two watches in one: a regular time component with the balance wheel and escapement. You can see this through the open face, but underneath, you've also got the escapement and powertrain for the chronograph. In this case, the chronograph is 1/100th of a second. You can read a 30 minute chronograph function at 3 o' clock, with elapsed seconds at 6 o' clock. The second hand does one whole rotation per second. We can see the power reserve at 12 o' clock. The reserve is 50 minutes for the chronograph, but 50 hours for the watch itself. It's powered by a unidirectional rotor; this is maybe one of the downsides, since I don't particularly like unidirectional rotors. This is because you can get it into a funky spin when not winding it in the "correct" direction. [01:36] Appearance & Operation The caseback is extremely handsome, with the star motif not only on the rotor, but also the clasp. The clasp is titanium with