Porsche Design used Baselworld in March to unveil a fresh family of world time watches called the Globetimer UTC.
The watch aims to combine simplified functionality and optimised legibility, according to its creator.
Describing how this works is more complicated than the way the watch is operated in real life.
Anywhere in the world the watch needs only a single push of a button to reset the twelve-hour hand to show local time.
A day/night disc serves as an a.m./p.m. indicator, helping the wearer set the time for the correct half of the day in the new time zone.
The date, linked to the local time, automatically shifts forward or backward when necessary.
The minute and home time displays remain unaffected by the reset.
The Globetimer UTC goes on sale in September 2019 in four model variants priced from €5,950.
It comes in a 42mm titanium case housing a modified Sellita Caliber SW 200 movement.