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Self-winding GMT & GMT Chronograph
Occasional winding: if the watch has not been worn
for 44 hours (cal. 1128, 2628) or 55 hours (cal. 3603)
or more, wind it up with the crown in position 1.
2. Setting the time zone: pull the crown out to position
2 and turn it. Only the hour hand moves (clockwise or
anticlockwise), without affecting the precision of the
minutes or seconds. If the hand moves past midnight,
the date changes automatically. Push the crown back
to position 1.
Setting the date: pull the crown out to position 2, turn
it forwards or backwards to change the date each time
the hour hand passes midnight. The date moves forwards
(or backwards) one day. Repeat until the required date is
obtained. Push the crown back to position 1
.
Synchronisation of the hour hand and the
“24-hour” hand (calibre 1128, fig. VI)
The triangle on the rotating bezel must point to
12 o’clock on the dial.
Pull the crown out to position 2 and turn it to syn-
chronise the hour hand with the time indicated by the
“24-hour” hand on the 24-hour scale on the rotating
bezel. Make sure you set the hour hand in the correct
half of the day! Push the crown back to position 1.
Synchronisation of the hour hand and the
“24-hour” hand (calibre 2628, fig. VII,
calibre 3603, fig. XX)
Pull the crown out to position 2 and turn it to syn-
chronise the hour hand with the time indicated by the
“24-hour” hand on the 24-hour scale in the centre of
the dial. Make sure you set the hour hand in the cor-
rect half of the day!
After synchronising the hour hand with the “24-hour”
hand, you must set the local time on your watch. Push
the crown back to position 1.