Unlike others watches show only the 24 major time zones, the Patrimony Traditionnelle World Time wristwatch sports a new movement. This movement allows it to show all 37 time zones, even those with half hour and 15 minute offsets from Greenwich Mean Time. A sophisticated mechanism allows not only the hour hand, but also the minute hand, to jump to the correct time for any of the time zones shown.
The movement was deliberately engineered in the event that any of the nations shown change their time zone system. The movement can be modified by Vacheron and supplied with an upgraded dial, so that the watch will always reflect geopolitical reality.