It?s hardly a secret that I?m an enormous fan of the Zenith Defy. I?ve said it before and I?ll say it again: pound for pound, there isn?t a sports watch line that I like more. I?ve owned both vintage and modern flavors of the Defy over the years (I reviewed my gone-but-not-forgotten black ceramic Defy Classic right here) and covered this year?s new Defy Skyline in a review that we ran in March. Part of what I love about the Defy is that there is so much variety in the product line as you go back through the decades, but it?s always been a sports watch that?s a little crazy, and a little experimental. It?s where Zenith tests the waters with new designs and technologies, with varying degrees of success. But even the failures are interesting, and that?s a big part of why I keep returning to these watches over and over again. 
The latest watch out of Le Locle with the Defy moniker is the Defy Extreme Double Tourbillon seen here. Like some of the very best watches, it tells you what you need to know about it right there in the name, but let?s unpack it a little further. The Defy Extreme Double Tourbillon represents what Zenith describes as the peak of innovation within their dedicated haute horlogerie endeavors. It combines their most advanced, high frequency chronograph movement with two tourbillons, and wraps it all in the Defy Extreme package, a platform the brand introduced last year as an extension of their longstanding Defy line. The Extreme versions of the Defy...