There face of the watch has three separate discs, which can be adjusted by a single crown. The outermost disc bears the colorful paintings and the initials of 24 cities around the world. Aligning the “V” on the crown with the case allows the home time to be set, which also locks in the time zone for which the minute repeater will chime.

As a result, the time zone can be adjusted with the push of a button within the crown (moving your destination city to the top of the dial.) Activating the minute repeater will sound the time in your home city. This also means that each time zone can be read at any given point with ease, thanks to the hour disc and the world-timer disc moving in sync with one another.