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chronograph Stopwatch
OS20
(1 crown/2 pushers)
Time Setting
1. Pull crown out to position 3. Chronograph second hand will return to “0.” Do not return the crown to position 1 while the
hands are returning to “0,” or else the position the hands are at when this is done will be recognized as the new “0” position.
2. Turn crown to set the desired time.
3. Return the crown to position 1.
Date Setting
1. Pull crown out to position 2.
2. Turn crown counter-clockwise until the correct date is shown in the date window.
3. Return crown to position 1.
chronograph Zero Reset
This procedure should be performed when the chronograph second hand does not return to the “0” position after the
chronograph has been reset.
1. Pull crown out to position 3.
2. Press A to set the chronograph second hand to the “0” position. Note: The hands move quickly if the pushers are kept pressed.
3. Once the hand has been zeroed, reset the time and return the crown to position 1. Do not return the crown to position 1
while the hands are returning to “0.” Doing so will cause the position of the hands to be recognized as the new “0” position.
chronograph Operation
This chronograph is able to measure and display time in 1/1 second up to maximum of 1 hour.
1. Press A to start/stop the chronograph.
2. Press B to reset the chronograph.
1
2
3
A
B
MINUTE HAND
SECOND HAND
24-HOUR HAND
chronograph
OS60
(1 crown/2 pushers)
Setting the Time
1. Pull the crown out to position 3. Chronograph second hand and 1/20 second hand will return to zero position.
Do not return the crown to its normal position while the hands are returning to zero, or else the position the hands are at when
this is done will be recognized as the new zero position.
2. Turn the crown to set the desired time.
3. Return the crown to its normal position.
Setting the Date
1. Pull the crown out to position 2.
2. Turn the crown counter-clockwise until the correct date is shown in the date window.
chronograph Zero Reset
1. Pull the crown out to position 3. Chronograph second hand and 1/20 second hand will return to zero.
Do not return the crown to its normal position while the hands are returning to zero, or else the position the hands are at when
this is done will be recognized as the new zero position.
2. Push A to set the chronograph second hand to 12:00 (zero) position. Each press of A advances the chronograph second hand
one mark. If A is held down for over 2 seconds, the chronograph second hand advances continuously.
3. Push B to set the chronograph 1/20 second hand to 12:00 (zero) position. Each press of B advances the 1/20 second hand
one mark. If B is held down for over 2 seconds, the 1/20 second hand advances continuously.
4. Return crown to its normal position.
5. Press B to reset all hands to the zero position.
chronograph Operation
1. Push A to start/stop the chronograph.
2. Push B to reset the chronograph.
3. Although the 1/20 second hand stops when the measurement time is over 30 seconds, the watch continues measuring the
elapsed time. And exact time elapsed is indicated when the measurement is stopped by pressing button A.
4. If B is pressed again after chronograph is reset, the 1/20 second hand changes to measure each second.
MINUTE
HAND
HOUR
HAND
1/20 SECOND
HAND
HOUR HAND
MINUTE HAND
1/20 SECOND HAND
chronograph
JS15, JS16 JS25, JS26, VD54
Time and Date Setting
1. Pull crown out to position 2.
2. Rotate crown clockwise until the previous day’s date is shown in the date window.
3. Pull crown out to position 3.
4. Rotate crown clockwise until the correct date is shown in the date window.
5. Continue to rotate crown to set correct am/pm time.
NoTe: 24-hour hand moves correspondingly with the hour and minute hands. When setting the time be sure to check that
the 24-hour hand is set properly.
6. Return crown to position 1.
NoTe: When the crown is in position 2, do not press the pushers. otherwise the chronograph hands will move.
NoTe: Do not set the date between 9:00 p.m. and 1:00 a.m. to ensure accuracy.
chronograph
1. Press A to start/stop the chronograph.
2. Press B to reset to zero.
chronograph Zero Reset
1. If either of the chronograph hands is not at the zero (12:00) position, pull crown out to position 3.
2. Press A to move hands clockwise; press B to move hands counter-clockwise. Each press of A or B will move the
chronograph hands by one increment/decrement. Or press and hold A or B for fast increment/decrement.
3. When both hands are in the zero position, reset time and return crown to position 1.
NoTe: Chronograph minute hand will synchronize with chronograph second hand during chronograph zero reset.
A
B
CHRONOGRAPH
SECOND HAND
CHRONOGRAPH
MINUTE HAND
24-HOUR HAND
A
B
CHRONOGRAPH
SECOND HAND
CHRONOGRAPH
MINUTE HAND
24-HOUR HAND
