Citizen JQ7XXX User Manual

CITIZEN QUARTZ

COMBO MINI

Model No. JQ7XXX

Cal. No. C450, C451

• INSTRUCTION MANUAL

CTZ-B6806

The contents of this manual are edited to be used
commonly for Cal. C440 and C450.

• Several types with different design are also available.

When reading this instruction manual please keep
the watch diagram in view. Symbols used in the
sections on operating instructions refer to the
symbols indicated in this diagram.

Some functions and operating
methods are different if model
number (Cal. No.) differs. Please
check Cal. on the back of your
watch, and read Instruction
Manual.

1. Main Features

This is an analog and digital combination watch
equipped with Race Timer for marine sports (Cal.
C440), Chronograph for timing race events, Timer
and other functions.
EL (electro-luminescence) Light illuminates display
in the dark.

2. Parts Name and Functions (When reading this
instruction manual, please keep the diagram
in view.)

3. Setting Analog Time Display

1) Pull out crown and second
hand stops.

2) Turn crown and set hands to
the correct time.

3) Push crown back in to restart
the watch.

To set the watch to the correct time:

Stop seconds hand at “0”. Move minutes hand a
few minutes ahead of the time you want to set, then
move it back to the correct time and push crown
back synchronizing with the time tone or time
casting.

*Analog and digital displays can be set to

different times to use as a dual time watch.

4. Mode Selection
Cal. C440

In addition to Time display, Cal. C440 has 6
functions of Calendar, Alarm-1, Alarm-2,
Chronograph, Race Timer and Timer. Mode of
watch changes each time

嘷M button is pressed. See

Mode Indicator to check the present mode.

Auto-Return:

Display will return automatically to normal Time
display mode if left in Alarm-1 or Alarm-2 mode for
more than 2 minutes without any operation.

Cal. C450

In addition to the Time display, Cal. C450 has 4
functions of Calendar, Alarm-1, Chronograph and
Timer. Mode of watch changes each time

嘷M button

is pressed.
See Mode Indicator to check the present mode.

Auto-Return:

Display will return automatically to normal Time
display mode if left in Alarm mode for more than 2
minutes without any operation.

5. Using Digital Function

A Setting Digital Time Display

• EL Light is illuminated when

嘷A

button is pressed in normal
Time display mode.

To set for Summertime

1) Press

嘷B button for more than

2 seconds in normal Time
display mode. “Summer,
ON/OF” flashes.

2) Press

嘷A button to set for

summertime. Indicator
changes to On or Off each
time this button is pressed.

• “SUMMER” is on display when set to summertime.

The watch shows the time one hour earlier than
the regular time when it is set to summertime.

To adjust Seconds

1) Press

嘷B button in adjustment mode (“SUMMER”

is flashing). Seconds flash.

2) Press

嘷A button while Seconds are flashing.

Digits return to “00,” and restart.

To adjust Time display

1) Press

嘷B button in adjustment mode (Seconds

are flashing). Flashing digits change in order as
shown in diagram each time button is pressed.

2) Press

嘷A button to adjust flashing digits. Press

and hold

嘷A button for rapid advancement.

• Summertime On/Off is changed each time

嘷A

button is pressed.

• 12/24-hour display is changed each time

嘷A

button is pressed.

• Be sure to set AM/PM mark correctly when using

12-hour display system.

• Auto-Return to normal Time display will activate

when the watch is left in adjustment mode for
more than 2 minutes.

• If

嘷M button is pressed in adjustment mode,

display will return directly to normal Time.

Linkage with Summertime:

Setting of Alarms 1 & 2 (Cal. C440) or Alarm (Cal.
C450) does not change when Summertime is set in
Time display Mode.

Analog Time

Setting Position

Button Operation:

嘷B Press for 2 seconds or longer. 嘷B Press once.

B Setting Calendar

• Calendar shows Month, Date and
Day.

• EL Light is illuminated while

嘷A

button is pressed and held in
Calendar display mode.

To set Calendar

1) Press

嘷B button in Calendar mode

for more than 2 seconds. Month
flashes.

2) Flashing digits change in order as
shown in the diagram each time

嘷B

button is pressed.

3) Press

嘷A button to adjust flashing

digits. Press and hold

嘷A button for

rapid advancement.

• Year can be set from 1996 to 2099.

• Auto-Return to normal Calendar display will

activate when the watch is left in adjustment
mode for more than 2 minutes.

• Day of the week is automatically set with

adjustment of Month, Date and Year.

• When calendar is set to non-existent date (e.g.,

February 30) display will show automatically first
day of next month when returned to normal mode.

• Month-end adjustments are not necessary as

Calendar is programmed to be set automatically.
If

嘷M button is pressed in adjustment mode,

display will return directly to normal Calendar
display mode.

C Setting Alarm-1 (Cal.
C440)/Alarm (Cal. C450)
To set Alarm-1 (Cal. C440)/Alarm
(Cal.450)

1) Press

嘷B button in alarm mode for

more than
2 seconds. Hours flash.

2) Press

嘷B button as necessary to

select digits to be adjusted. Press

嘷A button to set Alarm.

• If Time display is set to 12-hour

display system, it is linked to
Alarm. Make sure that AM/PM is
set correctly.

• Alarm setting does not change when Summertime

is set in Time display mode.

To switch Alarm On/Off

• Press

嘷A button in Alarm mode to switch alarm

On/Off.

Alarm Sound

• Alarm buzzer will sound for about 20 seconds.
Press any button to stop Alarm sound.

• Alarm Monitor

• Alarm will sound while

嘷A button is pressed in

Alarm mode

Auto-Return

• Display will return automatically to normal Alarm
display mode if left in Alarm adjustment mode for
more than 2 minutes without any operation.

• Display will return automatically to Time display
mode when 2 minutes have elapsed in normal
Alarm display mode.

Instant Manual Return

• Press

嘷M button in Alarm adjustment mode to

return instantly to normal Alarm display.

D Setting Alarm-2 (Cal. C440)

• Alarm-2 can be set and operated in the same
way as Alarm-1. Alarm-2 has a different sound.

E Using Chronograph

Chronograph measures up to 23 hours 59 minutes
59 seconds in 1/100 second. It will stop at next
second when it reaches exactly 24 hours and reset
to 00 minute 00 second 00. Chronograph also has a
split time measurement function.

[Display of Time Measurement]

• Chronograph shows minutes, Seconds and 1/100
Second up to 60 minutes and will change to
Hours, Minutes and Seconds after 60 minutes.

To Measure Total Elapsed Time

1) Press

嘷A button to start/stop Chronograph.

• Start/stop can be repeated for any number of
times by pressing

嘷A button.

• EL Light will turn ON for 4 seconds when
counting is stopped by pressing

嘷A button.

2) Press

嘷B button when counting is stopped to

reset Chronograph.

Minutes
(Change to Hours
after 60 min.)