As you know, IWC is producing a series of videos on the Man's Guide to Haute Horologerie. I've cut a deal here --before the videos are publicly released, our forum will have an exclusive pre-release viewing of each of them.
The newest video, to be released publicly tomorrow, is on the constant force tourbillon. You can view it by clicking here.
In case you missed it, the first video was on the tourbillon generally, and perhaps should be viewed first. It's at this link.
Next Thursday you'll get an exclusive preview of video 3 in this special series.
Enjoy!