IWC Schaffhausen is the only watch manufacturer to offer a world time model that shows a new time zone, including the new time and date, as the result of a simple twisting action. At the same time, the black-and-red 24-hour hand on the inner 24-hour ring shows whether it is night or day.

The precious IWC Pilot’s Watch Timezoner Chronograph replica is the first mechanical watch that permits a new time zone to be set with a single rotation. Simply press the bezel down, turn to the desired time zone and release: the hour hand, 24-hour day/night display and date move automatically in sync. The countries with daylight saving time are identified on the rotating bezel by a small “s”.

The elegant IWC replica can be moved only if pressure is applied simultaneously on two diametrically opposite sides, thus preventing accidental resetting of the time zone. This transmits the movement via a differential gear to the hour wheel, 24-hour hand and date advance wheel. If, for example, you wish to know whether you are calling your business partner during office hours or at night, quickly turn the relevant city to the top of the dial. The same principle applies to air travellers or pilots. Every time they change time zones, they can have the watch show them the local time and then revert to the time back home.