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Chronograph VD51B
Time and Date Setting
1. Before setting the time, make sure the chronograph second and minute hands are at the 12:00
position and the chronograph is not running. See Chronograph Operation instructions below.
2. Pull crown out to position 2.
3. Rotate crown clockwise until the previous day’s date is displayed in date window.
4. Pull crown out to position 3 when the second hand is in the 12:00 position. Second hand will
stop.
5. Rotate crown clockwise until the correct date is shown in the date window.
6. Continue to rotate crown to set correct am/pm time.
7. Return crown to position 1.
NOTE: When the crown in in position 2, do not press the pushers. Otherwise the chronograph
hands will move.
NOTE: Do not set date between 9:00 p.m. and 1:00 a.m. to ensure accuracy.
Chronograph Operation
1. Press A to start/stop the chronograph.
2. Press B to reset.
Split Time
1. Press B while the chronograph is running.
2. Press B again to return to the chronograph.
3. Press A to finalize timing.
4. Press B to reset.
Chronograph Zero Reset
If for any reason the chronograph hands do not return exactly to the zero (12:00) position:
1. Pull crown out to position 3.
2. Press A to reset the chronograph second hand, or press B to reset the chronograph minute hand.
Each press of the pusher will advance the corresponding hand one mark. If either pusher is held
down for over 2 seconds, the corresponding hand will advance continuously.
NOTE: Chronograph minute hand moves simultaneously with chronograph second hand.
3. Return crown to position 1 when chronograph hands are reset to zero (12:00).
1 2 3
A
B
CHRONOGRAPH
SECOND HAND
CHRONOGRAPH
MINUTE HAND
DATE
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