Union Glashuette U 7751 A Gebrauchsanleitung Seite 13

Use
Advice on how to synchronise your watch
To synchronise the seconds hand (3) with an official
time signal (radio/TV/Internet), pull out the crown to
position III ; the seconds hand will stop. At the signal,
push the crown back into the rest position I.
Date and month correction
Crown in position II, intermediate
The date is indicated by the hand (5) and the month in
the aperture (7). You will need to re-set the date and
month manually after months with less than 31 days.
Pull the crown out to position II and turn it counter-
clockwise until it displays the desired date and month.
Push the crown back into the rest position I. During
this operation, your watch will continue running, so
the time will not need to be re-set.
Important: Never correct the date between
10 p.m. and 2 a.m.; the movement is changing
the date and possibly the month.
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