The triple calendar with moonphase is Blancpain's flagship complication. Sure, they make more complex watches with many times more components, but it's this practical complication that is the brand's best seller (performing even better than the Fifty Fathoms and Bathyscaphe dive watches). Here we have that watch with the addition of a 24-hour hand for tracking a second timezone. The Villeret Quantième Complet GMT is available in both steel and red gold configurations, but technically the watches are the same and the big news is the addition of the under-lug correctors for the calendar functions that have been seen in the non-GMT versions of this watch for a while. The central GMT hand is meant to track home time and the crown can be used to jump the main hour hand forward and backward in one-hour increments for easy adjustment when traveling. The calendar functions are all tied to local time as well.