Basic Function (Start / Stop / Reset)
1. Press A to start/stop chronograph.
2. Press B to reset to zero.
Intermediate or Interval Timing
1. Press A to start chronograph.
2. Press B while the chronograph is running to measure intervals (timing
continues in the background).
3. Press B again to display ongoing measured time.
4. Repeat steps 1 and 2 to measure additional intervals.
5. Press A to finalize timing.
6. Press B to reset to zero.
Adjusting the Chronograph Hands to Zero Position
If one or more chronograph hands are not in their correct zero (12:00)
positions after pressing B (for example, following a battery change):
1. Pull crown out to position 3.
2. Press A and B simultaneously for 2 seconds until center stop-second
hand rotates by 360°. Corrective mode is activated.
3. To adjust center stop-second hand, press A to move hand one
increment; press and hold A for fast advance.
4. Press B to advance to hour counter hand. Press A to move hand one
increment; press and hold A for fast advance.
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5. Press B to advance minute counter hand. Press A to move hand one
increment; press and hold A for fast advance.
6. Return crown to position 1.
CHRONOGRAPH
Ronda 3540.D
Hour hand
SETTING THE TIME AND DATE
1. Pull crown out to position 2.
2. Turn crown anticlockwise to set date for previous day.
3. Pull crown out to position 3.
4. Turn crown clockwise until date changes to present day.
5. Continue to turn crown to set correct am/pm time.
6. Return crown to position 1.
Minute hand
A
Crown
1 2 3
B
Date
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