Greubel Forsey's GMT watch may have a short name, but it's one of the most complicated watches that they make. The watch shows the time in two time zones; there's a world time disk on the back which takes into account Daylight Saving Time in the time zones where it's observed, and most spectacularly, there's a 3D model of the Earth which rotates once every 24 hours. The watch has been offered in several metals and dial treatments heretofore, but the newest version is by far the most visually elaborate. The dial now has a multi-level sapphire chapter ring, and the case has been decorated with Greubel Forsey's signature "statement of purpose" engraving. The globe is now completely visible from both the dial and movement side of the watch (unlike the original GMT, in which Antarctical was not visible)