Citizen C720 User Manual
MODE
9
2
3
7
5
4
8
B
M
A
1
6
CHR
TMR
TME
MODE
AL-2
AM
SET
AL-1
10
0
-10
20
TUE
SUN
SET
30
40
THU
TEMP.
50
60
SAT
OFF
This watch is a combination quartz watch with a world time
function, which displays the time in 30 world cities and the
UTC (Coordinated Universal Time), and a thermometer
function. It also includes an EL (electroluminescence) light
function.
1
English
CONTENTS
1. NAMES OF PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. CHANGING MODES (FUNCTIONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3. SETTING THE HANDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4. TIME/CALENDAR MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
A. Changing the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
B. Changing the display city . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
C. Adjusting the time and calendar . . . . . . . . . . . . . . . . . . . . . . . . . . .12
5. ZONE SET MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
A. How to set the zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6. ALARM 1 & 2 MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
A. How to set the alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
B. Alarm ON/OFF and alarm monitor . . . . . . . . . . . . . . . . . . . . . . . . . .18
7. TIMER MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
A. How to set the timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
B. Timer countdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
8. CHRONOGRAPH MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
A. Total elapsed time measurement . . . . . . . . . . . . . . . . . . . . . . . . . . .23
B. Split time measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
9. THERMOMETER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
A. Methods of measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
B. Temperature measurement range and accuracy . . . . . . . . . . . . . .26
C. Switching between Celsius/Fahrenheit display . . . . . . . . . . . . . . .27
10. LOW BATTERY INDICATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
11. ALL RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
12. PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
13. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
32
5
1. NAME OF PARTS
4
Time • Calendar
Time display
To <SET> mode To <SET> mode To time display To <AL-1> mode To <TMR> mode To <CHR> mode To <TME> mode
City selection display
Calendar/temperature display
Timer
Start/Stop
Alarm 1 or
Alarm 2
Switching ON/OFF
Alarm monitor
Zone Set Chronograph
Start/Stop
1/1000 second
EL light goes on
To time/calendar adjustment mode
EL light goes on
TME
Hour, minute, city
Second
Temperature (Celsius)
Temperature (Celsius)
Temperature
Day of week
Second ON or OFF
SET or OFF Graphic display
Temperature
Time difference from UTC
Month, day, city Hour, minute, city Hour, minute, city Alarm time, city Hour, minute, second
Measured time
(hours, minutes)
SET AL-1 or AL-2 TMR CHR
Mode
Name
1: Mode mark display
2: Digital display [1]
3: Digital display [2]
Press once
Press more
than 2 seconds
To city selection
display
Displayed city
changes
Displayed city
changes quickly
Displayed city
changes
To city setting
adjustment mode
To alarm adjustment
mode
Displayed city
changes
To timer adjustment
mode
Split/Reset
To calendar/
temperature display
Press more
than 2 seconds
Press once
Press once
Button A
Button B
Button M
4: Graphic display
76
Mode mark Mode (function)
TME Time/Calendar
SET Zone Set*
1
AL-1 Alarm 1
AL-2 Alarm 2
TMR Timer
CHR Chronograph
MODE
TME
2. CHANGING MODES (FUNCTIONS)
This watch has the modes (functions) listed in the next page.
Each time button g is pressed, the mode changes. The current mode is
indicated by the mode mark. For details on how to use each mode, see the
appropriate section.
5: Crown To set analog time
6: Hour hand Always indicates time (hours)
7: Minute hand Always indicates time (minutes)
8: Second hand Always indicates time (seconds)
9: Thermosensor
Measures temperature,
shown on the digital display
Mode mark
(blinking)
M
*1: Zone Set mode
This mode ables to set, for each of 30 world cities and the UTC (Coordinated
Universal Time), a display (SET)/non-display (OFF) setting and a summer time
setting.
* If the watch is left in the Zone Set mode, Alarm 1 or Alarm 2 mode for
approximately 2 minutes, it will automatically return to Time/Calendar mode.
SET
CHR
TMR
AL-1
AL-2
4. TIME/CALENDAR MODE
9
3. SETTING THE HANDS
(1) Pull the crown out to stop the
hands.
(2) Turn the crown to set the correct
time.
(3) Press the crown back in to restart.
8
Second hand
Normal position
Setting position
MODE
TME
MODE
MODE
A. Changing the display
• The “time display” changes to “calendar, temperature display” when button B
is pressed.
• The “calendar, temperature display” changes to “city selection display” when
button B is pressed.
B
BB
A
M
[Time display]
[Calendar, temperature
display]
[City selection
display]
City
Second Second
Temperature
Temperature
City (blinks)
Temperature
Month, day Day of the week
Hour, minute
Hour, minute
SET
CHR
TMR
AL-1
AL-2
AM
60
0
5
0
4
30
20
10
0
-10
TME
SET
CHR
TMR
AL-1
AL-2
C
SAT
U
H
T
E
TU
N
U
S
TME
SET
CHR
TMR
AL-1
AL-2
AM
60
0
5
0
4
30
20
10
0
-10
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