Setting local time

The CFB 1901.1 certified chronometer movement was developed by Carl F. Bucherer himself. The hour hand can be disengaged from the rest of the train using the crown and moved either forward or back-ward in exact one hour increments. The hand thus goes through 300 for each 60-minute step. The movement continues to run, so that the exact time is kept while the watch is being set. Setting the local time is therefore always a straightforward operation, even when large time differences are involved.

Second and third time zones

An additional, red 24-hour hand ensures that the wearer can always keep track of the all-important time back home, no matter where they are in the world. Together with the fixed 24-hour scale on the dial’s raised ring, the red hand indicates the exact time back home. And, in conjunction with the 24-hour rotating bezel inside the watch case, it can also display a third time zone. The rotating bezel is not moved by simply turning another crown, but with the aid of a new, single push button mechanism, which is located at 10 o’clock. This is to be patented.