I didn't know such a caliber existed. Apparently Omega made the first wristwatch-sized tourbillon, though it was only intended for competition. Still, 7 found there way into cases 40 years later.

http://www.hodinkee.com/blog/2011/1...rlds-first-tourbillon-wristwatch-caliber.html

http://omega.watchprosite.com/show-nblog.post/ti-358702/