Junghans J644.96 Manual De Instrucciones página 18

Reset
Press the reset button (13). This moves all four of the chronograph
hands back to their starting positions. To reactivate the second hand
for normal time, press the reset button (13) again.
Timing additions
After timing an initial event, you can add times together by, instead
of pressing the reset button, pressing the start/stop button again.
The chronograph hands will then continue running from the
stopped position. You stop the chronograph by pressing the
start/stop button (12) again. To move the chronograph hands back to
their starting position, press the reset button (13). The second hand
for normal time is reactivated by pressing the reset button (13)
again.
Setting the alarm
To do this, pull the winder into position B. By turning the winder to
the right, you can now set the alarm hand to the desired time. To
activate the alarm, pull the alarm winder into position B. The alarm
is deactivated by pressing the alarm winder into position A.
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Aligning the chronograph hands to the starting position
If one or more of the chronograph hands fails to return to its correct
starting position, these need to be aligned (this can be caused, for
instance, by a battery change).
To do this, pull the winder into position C. All of the chronograph
hands will now move to their correct / incorrect starting positions.
To align the first chronograph hand, press the start/stop button (12).
Do so briefly to adjust it one step at a time or hold it down longer to
move the hand in one continual movement. Continue until the hand
is exactly in the starting position. To align the 1/20 second hand,
press the reset button (13).
Once all of the chronograph hands have been correctly aligned,
press the winder back into position A.
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