Fast forward to 2017 (skipping over the Defy's short-lived revival in the Nataf era), link and the Defy was born again, this time as the home of Zenith's continued experiments in high-frequency watchmaking. We had the Defy Inventor, the Defy Fusee Tourbillon, the Defy Double Tourbillon, the Defy Zero G, and of course, the Defy 21 series revealed as a new flagship. link So how link does the latest edition of the Defy 21 build on what is likely considered an already "extreme" design by most watch collectors?