Citizen CTZ-D6761 User manual

CITIZEN QUARTZ
TWINCHRON
Model No. JM9XXX
Cal. No. C24
• INSTRUCTION MANUAL
CTZ-D6761
1. MAIN FEATURES
This watch is a combination quartz watch with
analog and digital displays. The watch has the
CALENDAR, ALARM, STOPWATCH, TIMER and
DUAL-TIME functions.
2. SETTING THE TIME (ANALOG)
1) Pull the crown out one step.
The second hand will stop.
2) Set for the correct time by
turning the crown.
3) Push the crown back to the
original position. The watch
will start running again.
* The analog indication and
digital display of the time
settings can be adjusted
separately.
3. USING THE DIGITAL FUNCTIONS
A. SWITCHING OVER THE MODE (FUNCTION)
The mode of the watch changes each time the 嘷M
button is pressed. The upper window always shows
TIME.
B. SETTING THE TIME/CALENDAR
To set the SECONDS:
1) Press the 嘷Bbutton in the TIME/CALENDAR
mode for two seconds or more, until the
SECONDS start flashing.
2) Press and release the 嘷Abutton while the
SECONDS return to “00” and restart.
To set the TIME/CALENDAR:
1) When the SECONDS are flashing, press and
release the 嘷Bbutton repeatedly to select desired
digits for adjustment.
2) Make all necessary adjustments using the 嘷A
button. If you hold the 嘷Abutton down, the digits
will advance rapidly.
• Press and release the 嘷Abutton to select the
12-hour or 24-hour display.
• Make sure that the AM/PM is set correctly when
setting the 12-hour display.
• If the watch is left in the adjustment mode (digits
flashing) for one minute or more, the autoreturn
function will activate and the display will return to
the TIME/CALENDAR mode.
• Press the 嘷Mbutton to return to the TIME/CALENDAR
mode from the adjustment mode.
• If a nonexistent date (e.g. February 30) is set
during adjustment, the display will automatically
show the first of the next month when set to the
TIME/CALENDAR mode.
• Monthend dates are adjusted automatically except
for leap years. In a leap year, adjust the
CALENDAR for February 29.
To set the CHIME (Time Signal)
Press the 嘷Aand 嘷Bbuttons simultaneously in the
TIME/CALENDAR mode. The “ ’’ symbol appears
and the CHIME sounds every hour on the hour. To
cancel the CHIME setting, press the 嘷Aand 嘷B
buttons in the TIME/CALENDAR mode and the “ ’’
symbol will disappear.
C. SETTING THE ALARM
To set the ALARM time:
The ALARM can be set by
following the same procedure
as that for TIME/CALENDAR
adjustment. The ALARM can be
set to Hours and Minutes only.
1) Press and release the 嘷B
button in the ALARM mode
until desired digits flash and
then make adjustment.
2) Press the 嘷Abutton to set
the ALARM time.
* The ALARM display will
automatically synchronize with
the 24-hour display of the
TIME/CALENDAR.
To switch the ALARM ON/OFF:
The ALARM can be switched ON/OFF by pressing the
嘷Abutton in the ALARM mode. When the ALARM is
set ON, the set time and the “ ’’ symbol appear and
when it is switched OFF, “ ’’ appears in the display.

To stop the ALARM sound:
The ALARM sounds for about 20 seconds. Press
any button to stop the sound.
* Press the 嘷Abutton while in the ALARM mode to
check the alarm sound.
D. USING THE STOPWATCH
The STOPWATCH measures in
increments of 1/100 of a second,
up to 59’ 59” 99 hundredths. It
will then return to 00’ 00” 00 and
restart counting.
To use the stopwatch:
1) Press the 嘷Abutton to
start/stop the STOPWATCH.
2) Press the 嘷Bbutton to check Split Time while the
STOPWATCH is in measurement.”SPL” flashes
while the Split Time is shown.
3) To return to the STOPWATCH measurement
display, press the 嘷Bbutton while Split Time is
shown.
4) When the 嘷Bbutton is pressed in the stop state,
the STOPWATCH mode is switched to the reset
state.
*Split Time shows the elapsed time at a given
interval point between the start and the goal.
You can switch the watch to another mode by
pressing the M button while the STOPWATCH is
counting. The STOPWATCH continues its counting.
To check the counting, switch the watch to the
STOPWATCH mode again.
E. USING THE TIMER
The TIMER can be set up to 60 minute in one
minute increments. When the TIMER reaches to 00’
00”, the alarm will beep for about five seconds.
To set the TIMER:
When in the TIMER mode, press
the 嘷Bbutton while the digits are
flashing. The digits is decreased
in one-minute decrement from 60
minutes downward. Set to
desired time. Hold the 嘷Bbutton
down to quicken the change of
the TIMER digits.
To use the TIMER:
1) Press the 嘷Abutton. The
TIMER Starts countdown from the set time.
2) Press the 嘷Ato stop the countdown. To resume
the countdown, press the 嘷Abutton again.
3) Press the 嘷Bto reset the TIMER in TIMER stop
state. When the TIMER reaches to 00’00”, the
display returns to the original setting.
To restart the countdown:
Press the 嘷Bbutton while the countdown is
continuing. The TIMER will return to the original
setting and restart the countdown.
F. USING THE DUAL TIME
You can set another time (Local Time) in the DUAL
TIME mode in addition to the normal TIME/CALENDAR
display (Home Time). This function is especially
convenient when your are travelling abroad.
To set the DUAL TIME:
The DUAL TIME can be set by
following the same procedure as
that for the TIME/CALENDAR
adjustment.
1) Press the 嘷Bbutton to select
desired digits for adjustment.
The digits flash. Press the 嘷A
button to set the DUAL TIME.
* Since the DUAL TIME display
will automatically synchronize
with the 12-hour display of the TIME/CALENDAR,
make sure that the “A” (a.m.) or “P” (p.m.) symbols
indicate correctly.
4. USING THE REGISTER RING BEZEL
Adopted for the models with the register ring
bezel
The register ring gives you a convenient way to
calculate the elapsed time or remaining time.
* Note that the Register Ring bezel is not equipped
on some modes.
Calculating the elapsed time
Align the minute hand with the register ring zero
mark ( ). The elapsed minutes since the ring was
set can now be easily calculated by comparing the
positions of the zero mark and the minute hand.
Example:
(1) Current time is 10:10.
Align the zero mark ( ) with the minute hand.
(2) The watch is next checked at 10:40. To
determine the elapsed time, read the number off the
register ring at the minute hand position. The
elapsed time is 30 minutes (fig. 1).
Calculating the remaining time
Align the register ring zero mark ( ) with the target
time and use the ring’s calibrations to calculate the
remaining minutes.
Example:
(1) The target time is 10:25.
Set the register ring zero mark ( ) to the 25
minute mark on dial.
(2) If the current time is 10:10 the remaining time is
15 minutes as calculated from the register ring
(fig. 2).
Elapsed Time Remaining time

5. USING THE ALL REST FUNCTION
The watch may show an abnormal display or action
after the power cell has been replaced or when it
has a strong shock. In such case, use the ALL
RESET FUNCTION to set the watch back to
normal. 1) Press the 嘷A,嘷Band 嘷M
buttons simultaneously for
over three seconds.
2) Release the buttons when
all digits disappear. The
alarm will beep at this time
as confirmation.
3) Adjust the watch to the correct time.
6. PRECAUTIONS
a. Avoid temperature extremes
Avoid leaving your watch in direct sunlight or in
extremely warm or cold locations for long periods of
time.
• This will cause malfunctioning and shorten the life
of the battery.
• This may cause your watch to gain or lose time
and affect its other functions.
• Place your watch on your wrist to restore its
original accuracy should it begin to gain or lose
time.
b. Avoid strong shocks
This watch will withstand the bumps and jars
normality incurred while playing and during sport
activities.
Avoid dropping your watch on the ground or
subjecting the watch to strong shock which may
cause malfunction or damage.
c. Resistance to water
Check the chart to determine the water resistance
properties of this watch.
d. Avoid strong magnetic fields
Keep your watch out of the immediate vicinity of
strong magnets.
Generally, your watch is not affected by magnetic
fields from such household appliances as television
sets and stereo equipment.
Indication Water related use
Watch
face
–WATER
RESIST,
Caseback
Light spray,
perspiration,
light rain,
etc.
swimming,
etc Skin diving
(without air
tank)
Skin diving
(with air
tank)
Pulling
the crown
out when
the watch
is wet.
OK NO
WATER
RESiSTANT
(5 bar)
WATER
RESIST NO
WATER
RESiSTANT
(10-20 bar)
WATER
RESIST OK OK NO NO
“WATER RESISTANT” may sometimes be abbreviated as “WATER RESIST” * Always set the crown in the normal position *Tighten screwlock crown completely
NO
NO
OK
OKOK
NO
NO
NO

e. Static electricity
The integrated circuits used in the watch are
sensitive to static electricity. If exposed to intense
static electricity, the watch’s display may lose its
accuracy.
f. Avoid harmful chemicals, solvents and gases
Avoid wearing your watch in the presence of strong
chemicals, solvents and gases. If your watch comes
in contact with materials such as gasoline, benzine,
paint thinner, alcohol, spray cosmetics nail polish,
nail polish remover, adhesives or paints,
discoloration or damage to the case, band and other
components may occur.
g. Keep your watch clean
It may become difficult to pull the crown out due to
dirt and dust getting caught between the crown and
the watch case when the watch is worn for long
periods of time. To help prevent this from
happening, turn the crown back and forth
occasionally while it is in the normal position.
Wipe off any water and moisture that adheres to the
case, glass and band with a soft, clean cloth. Any
dirt left on the case or band may cause skin rash.
A watchband will easily become soiled with dust and
perspiration because it is in direct contact with the
skin. Even a stainless or gold-plated band may
begin to corrode if it has not been cleaned for a
long period of time.
Mesh bands, because the mesh is very fine, will
lose the their particular “flexibility” if they are left
soiled for a long time.
Metal watchbands are usually washed with a brush
in mild, soapy water then rinsed and wiped well with
a soft, absorbent cloth to make sure all water is
removed. Pay attention to prevent any water from
getting inside your watch when the band is washed.
h. Periodic inspection
Getting your watch checked once every year or two
is recommended to ensure long use and trouble-
free operation.
i. Be sure to keep the batteries out of reach of
infants and small children. Should accidental
ingestion occur, consult a doctor at once.
7. SPECIFICATIONS
• Cal. No.: C240
• Type: (Analog + digital)
combination quartz watch
• Accuracy when worn under
normal temperatures: Within ⫾20 seconds
per month
• Operative temperatures:0°C to 55°C
(32°F to 131°F)
• Display functions:
<Analog section> Hours/Minutes/Seconds
<Digital section> Time/calendar
Alarm
Stopwatch
Timer
Dual time
• Power cell: Power cell No. 280-44;
Power cell code SR927W
• Power cell life: Approx. 2 years based on
the assumed daily use of
the ALARM sound for 20
secs and TIMER time-up
sound for 5 secs
(The watch will keep the specified accuracy for
about 2 years when used under normal conditions
after a new power cell has been installed. However,
the power cell life will vary depending on the
frequency of use of the ALARM, STOPWATCH and
other functions.)
*These specifications are subject to change for
product improvement without prior notice.