1
0
2
0
3
0
4
0
5
0
A
3 1
4
2
6
A
7
5
B
M
This is a combination (analog and digital display) diver’s watch with a depth
meter installed.
When diving, various data related to diving (present depth/diving time/maximum depth) appears on the digital display. Apart from the log data memory
function which records the diving data from four dives, there is also a ascending speed alarm function which warns the diver with an alarm sound if the
ascending speed is too fast.
Highly Reliable “200m Diving Water-resistant Performance”
The highly reliable water-resistant performance conforms to ISO diver’s watch
standards.
* ISO diver’s watch standards have been set by the International Organization
for Standardization.
< ISO/6425, May 15th, 1984 >
All repairs on this product, including battery replacement, should be
done at a Citizen Service Center. Request repairs or an inspection by
Citizen at the place of purchase or send directly to a Citizen Service
Center.
3
2
English
4
5
Before using the watch, read this instruction
manual carefully for safe and correct use.
After reading this manual, keep it for your
further reference.
This symbol is followed by instructions the
negligence of which might result in death
or serious injury.
This symbol is followed by instructions the
negligence of which might result in injury or
damage to property.
Safety precautions - Instructions to be followed at all times.
In order to prevent injury to yourself or other persons and damage to
property, this manual describes the instructions which you should
strictly follow:
■ Injury and/or damage which might be caused by using the watch
improperly, neglecting any of the instructions or precautions in this
manual, are classified with the following symbols.
WARNING
CAUTION
CAUTION
■ The instructions for safe operation are classified with the following
symbols.
Warning (caution) symbol followed by instructions
for safe operation and/or precautions that you
should take
Prohibition symbol followed by "don'ts" (what you
should not do)
Recreational diving involves risks.Use this watch for diving after you have
undergone scuba diving training from a qualified instructor, obtained the
necessary experience and skills for safe diving, and fully understood the
watch’s handling operation.
WARNING
Diving is a fundamentally dangerous sport. When diving with this watch, make
sure you fully understand and follow the instructions on handling described in
this manual.
The depth measurement function of this watch is not approved as a measuring instrument for official organizations. Use it as an auxiliary or backup
instrument.
Diving with this watch is limited to recreational diving (non-decompression diving). Do not use it for decompression diving, saturation diving or diving at high
altitude. It can be used in seawater in a temperature range of 10˚C - 40˚C
(50˚F - 104˚F), but it does not indicate correct depths in water other than
seawater (specific gravity 1.025). The watch’s display and performance are also
affected by sudden changes in atmospheric pressure or changes in the water
temperature. It must be used in combination with other instruments.Always use
this watch’s display as an approximate guide.
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7
H. HOW TO USE THE LOG MODE .................................................................32
I. HOW T O USE THE DEPTH/DIVING TIME ALARM....................................36
1. HOW TO SET THE DEPTH ALARM.......................................................37
2. HOW TO SET THE DIVING TIME ALARM.............................................38
J. HOW T O USE THE DIVE MODE ................................................................39
1. DEPTH METER DISPLAY.......................................................................42
2. DIVING TIME MEASUREMENT..............................................................43
K. THIS WATCH’s W ARNING FUNCTIONS....................................................44
1. ASCENDING SPEED WARNING FUNCTION........................................44
2. ABNORMAL DEPTH WARNING FUNCTION .........................................45
L. IN CASE OF THE FOLLOWING.................................................................46
M. ALL RESET ................................................................................................49
N. BATTERY....................................................................................................50
O. OTHER FUNCTIONS..................................................................................52
1. REGISTER RING....................................................................................52
2. NO DECOMPRESSION LIMITS .............................................................53
P. CARE OF YOUR WATCH ............................................................................54
Q. SPECIFICATIONS.......................................................................................60
CONTENTS
WARNING..........................................................................................................6
A. DIVING WITH THIS W A TCH .......................................................................10
DIVING WITH THIS WATCH.......................................................................10
DEPTH METER FUNCTION.......................................................................10
FOR SAFE DIVING.....................................................................................11
PROHIBITION WHEN DIVING....................................................................12
PRECAUTIONS FOR DIVING ....................................................................13
DIVING AT HIGH ALTITUDE AND IN FRESHWATER................................15
B. NAMES AND FUNCTIONS OF PARTS......................................................16
C. SWITCHING MODES..................................................................................20
1.TIME MODES [\ DIVING MODES......................................................21
2. SWITCHING TIME MODES....................................................................22
3. SWITCHING DIVING MODES................................................................23
D. HOW TO SET THE DIGITAL TIME ..............................................................24
E. HOW TO SET THE ANALOG TIME............................................................26
F. HOW T O USE THE ALARM........................................................................27
G. HO W TO USE THE CHRONOGRAPH........................................................29
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9
CAUTION FOR SAFE DIVING
• Always use the ‘buddy system’ when diving.
• This product is recommended for sports diving to depths of about 15-20m
(50-65ft).
• Early batter y replacement is recommended. A new battery will last approximately 2 years.(This will vary according to the frequency of use of the depth
meter function.)
• Rest fully after diving as specified by safety rules. Riding in an airplane or
moving to a high altitude too soon after diving can bring about decompression sickness.
A. DIVING WITH THIS WATCH
CAUTION DIVING WITH THIS WATCH
• Only use this diving watch after undergoing correct instruction and training in
diving and always obey the accompanying rules.
• Make sure you fully understand the handling of the watch and the caution
items in order to use it correctly. Please note that the watch may not function
correctly if you handle it other than as indicated in this instruction manual.
WARNING DEPTH METER FUNCTION
• This watch’s depth meter function is not approved as a depth meter for official organizations. Use it as an auxiliary or backup instrument.
• Only use this watch’s depth meter values as a guideline.
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11
CAUTION PRECAUTIONS FOR DIVING
< Before diving >
• Make sure that the crown is pushed firmly in and locked in place.
• Make sure that the band is firmly attached to the watch body.
• Make sure that there are no cracks, flaws or chips on the watch band or
glass.
• Make sure that the register ring will rotate correctly.
• Make sure that the time and calendar are set correctly.
• Make sure that the depth alarm and diving time alarm are set correctly.
• Make sure that the second hand is moving correctly.
* If the second hand is moving in 2 second increments, then the battery is
low. Request battery replacement by Citizen at the place of purchase or
send directly to a Citizen Service Center.
PROHIBITION PROHIBITION WHEN DIVING
Do not use this watch for diving in the following cases.
• When the low battery warning function is activated.
...When the life of the battery is near ing its end, the second hand moves in 2
second intervals.
• When the watch stops or exhibits any abnormal functioning.
• The depth measurement is outside the assured temperature range.
...The temperature range in which the accuracy of this watch’s depth meter
is guaranteed is +10˚C - +40˚C (50˚F - 104˚F).
• In potentially dangerous activities or conditions.
...This watch is not designed for use in maritime emergencies or to prevent
sea disasters, etc.
• When using a helium enriched environment.
...This might cause breakdown or damage.
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13
CAUTION DIVING AT HIGH ALTITUDE AND IN
FRESHWATER
• Be sure to complete special safety training before diving in fresh water or at
high altitude.
• Do not use this watch at altitudes over 4,000 meters (13,124ft), because
accurate measurement is not possible.
• This watch displays change in depth based on a standard of seawater (density 1.025), so the actual depth in fresh water will be 2.5% greater than the
depth displayed.
Example: 20m/66ft (indicated depth) X 1.025 = 20.5m/68ft (actual depth)
The pressure sensor is calibrated to the surrounding pressure at a depth of
0m (0ft) when the watch is switched to Diving Modes.Sealevel is also set to
0m (0ft) when the watch is switched to Diving Modes in a lake at high
altitude. However, do not use at an altitude of over 4,000m (13,124ft)
because accurate measurement is not possible.
< During diving >
•Avoid ascending very quickly to prevent your body from being affected by
the bends, etc. Surface at a safe speed of within 9m/30ft. per minute.
This ascending speed is in accordance with the U.S.Navy Diving Manual
(1993 edition).
•Never operate the crown or any buttons except button
A
when underwater.
Doing so may result in a fault such as poor water resistance.
• Be careful because the alarm may be hard to hear underwater because of
the sound of your breathing.
< After diving >
• After making sure that the crown is locked in place, wash the watch free of
seawater, mud and sand using fresh water, then wipe the water off with a
dry cloth.
•Do not attempt to remove the sensor cover and remove any dirt or debris
clogging the sensor with a sharp instrument. If there is any debris, flush it
out with fresh water.If you cannot do so, consult a Citizen Service Center.
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15
B. NAMES AND FUNCTIONS OF PARTS
- Read in conjunction with the watch diagram at the beginning of this
manual.
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17
Name
A
: Button
A
Press once
Press for 2 seconds or more
B
: Button
B
Press once
Press for 2 seconds or more
M
: Button
M
Press once
Press for 2 seconds or more
1: Digital display
2: Crown
3: Hour hand
4: Minute hand
5: Second hand
Time Modes
Time/Calendar
Switches between hours, minutes/seconds/date, day
—
—
To time/calendar adjustment status
To Alarm Mode
To Diving Modes
A/P, hours, minutes/seconds/date, day
Use to adjust the analog time
Normally shows “hours”
Normally shows “minutes”
Normally shows “seconds”
Time Modes
Alarm Chronograph
ON/OFF Start/Stop
——
— Split time/Reset
To alarm set time adjustment —
To Chronograph Mode To Time/Calendar Mode
To Diving Modes To Diving Modes
A/P, hours, minutes or OFF Minutes, seconds, 1/100 seconds
Use to adjust the analog time
Normally shows “hours”
Normally shows “minutes”
Normally shows “seconds”
6: Rotating bezel ...You can use this rotating bezel to approximately measure
the diving time and remaining time.
7: Pressure sensor ... Senses water pressure to measure the depth.
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19
Name
A
: ButtonAPress once
Press for 2 seconds or more
B
: ButtonBPress once
Press for 2 seconds or more
M
: ButtonMPress once
Press for 2 seconds or more
1: Digital display
2: Crown
3: Hour hand
4: Minute hand
5: Second hand
Diving Modes
Log Mode
Memo (logged) recall
—
To Dive Mode
—
Shows the following log No. *1
To Time Modes
*2
Use to adjust the analog time
Normally shows “hours”
Normally shows “minutes”
Normally shows “seconds”
Diving Modes
Depth Alarm Mode Dive Time Alarm Mode Dive Mode
Depth Alarm correction Dive time alarm correction Dive time/max. depth recall
Depth Alarm quick correction Dive time alarm quick correction
—
To Dive Mode To Dive Mode —
——To Log Mode *3
To Dive Time Alar m Mode To Log Mode —
To Time Modes To Time Modes To Time Modes *3
Set depth Set dive time (minutes)
Current depth/Dive time/max.depth
Use to adjust the analog time
Normally shows “hours”
Normally shows “minutes”
Normally shows “seconds”
*1 To Depth Alarm Mode when log no. 4 is shown
*2 Log No./Dive date/Dive start time/Max. depth/Diving time
*3 Pushing the button does not switch the mode during diving (when a depth of
1m/4ft or more is shown).
1. TIME MODES [\ DIVING MODES
In any mode (except the Dive Mode), pressing button Mfor 2 seconds or more
sounds the confirmation beep and switches between the Time Modes and the
Diving Modes.
• When the Dive Mode depth meter display reads 0 (within 1m/4ft), depth
measurement ends and the watch switches to Time Modes display.
• When the Dive Mode depth meter display reads 1.0m (4ft) or more, the
mode cannot be switched by button operation.
• If the low battery warning function is activated or if there is something wrong
with the pressure sensor (ER is displayed), normal depth measurement cannot be carried out so the watch cannot be switched to the Dive Mode of the
Diving Modes.
C. SWITCHING MODES
On this watch’s digital display function, the modes are broadly classified into 2
types.
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21
Time Modes
Time/Calendar Mode
Alarm Mode
Chronograph Mode
Diving Modes
Log Mode (Log No. 1 - No. 4)
Depth Alarm Mode
Depth Time Alarm Mode
Dive Mode
* The signs for buttons used in each explanation’s illustration have the follow-
ing meanings.
}
: Press the button for 2 seconds or more
}
: Press the button once
Time Modes Diving Modes
M
3. SWITCHING DIVING MODES
Each time button Mis pressed, the mode is switched between Log No. 1 ➡ Log
No.2 ➡ Log No.3 ➡ Log No. 4 ➡ Depth Alarm ➡ Diving Time Alarm.
Pressing button
B
in Log Mode, Depth Alarm Mode or Diving Time Alarm
Mode switches to Dive Mode.
2. SWITCHING TIME MODES
The mode is switched each time button Mis pressed.
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23
A
A
AL
• Each time button Ais pressed in
Time/Calendar Mode, the display switches
between [Hours and Minutes] ➡ [Seconds] ➡
[Date and Day].
• If the watch is left alone for about 3 minutes
while in the Alarm Mode or Reset state in
Chronograph Mode, it returns automatically to
the Time/Calendar Mode (Auto-Return).
< Time/Calendar >
< Alarm > < Chronograph >
Hour and
Minute
Display
Seconds
Display
Date and
Day
Display
A
A
A
A
MM
M
LOG
DIVE
DIVEALDIVE
AL
DIVE
< Log No. 1 - 4) > < Depth Alarm > < Diving Time Alarm >
< Dive Mode >
M
M
M
B
DIVE
Within
1m (4ft)
Deeper
than 1m
(4ft)
M
B
(4) Each time button Bis pressed, the part of the display which flashes
changes from Seconds ➡ Minutes ➡ Hours ➡ 12H/24H ➡ Month ➡
Date ➡ Year. Select the one you want to change.
(5) Press button
A
to correct the flashing figures.
• You can adjust quickly by holding button
A
down.
• Each time you press button
A
when 12H/24H is shown, the display
changes.
(6) Press button
M
to finalize setting.
• The year can be set from 1996 - 2099.
• When 12H is displayed, be careful whether the time is morning (A) or
afternoon (P).
• If the watch is left alone for 3 minutes in the correction state with the display flashing, that correction state is automatically cancelled and the watch
returns to the normal Time/Calendar Mode.
• If you press button
M
in the correction state with the display flashing, the
watch returns to the normal Time/Calendar Mode.
• The calendar is an auto-calendar which automatically changes from the
last day of one month to the 1st day of the next month.
• If the watch is left alone for about 1 hour in Log Mode, Depth Alarm Mode or
Diving Time Alarm Mode, it automatically returns to the Time Modes.
• If the watch is left alone for about 1 hour when the Dive Mode reads ‘0’, it
automatically returns to the Time Modes.
D. HOW TO SET THE DIGITAL TIME
[How to set the digital time]
(1) Press button
M
to set Time/Calendar
Mode.
(2) If you press button
B
down for 2 seconds
or more, the seconds display flashes and
you get the Time/Calendar Mode correction
state.
(3) Press and release button
A
to reset
seconds to 0 and restart.
• When the seconds show from 30 thru 59,
the minute display is increased by 1.
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25
A
“Hour and Minutes” or
“Seconds” or “Date and Day”
BA
M
F. HOW TO USE THE ALARM
Once the alarm has been set, it will sound every day at the set time for 15 seconds. However, it will not sound in Diving Modes.
The alarm sound can be stopped by pressing any button.
< Setting the alarm time >
(1) Press button
M
to set the Alarm Mode.
(2) If you press button
B
for 2 seconds or more,
the hour display flashes on and off and the
watch is in the alarm time adjustment state.
(3) Press button
A
to adjust the hour display.
(The flashing figures can be adjusted.)
(4) If you press button
B
, the figures which are
flashing change to the minute display.
(5) Press button
A
to adjust the minute display.
Keep the button
A
pressed down to adjust
quickly.
(6) Press button
B
or button Mto return to the
normal display. Alarm time setting is now
completed.
E. HOW TO SET THE ANALOG TIME
[Setting the analog time]
(1) Loosen the screw of the crown and pull it
out so that the second hand stops in the
“0” position.
(2) Turn the crown to set the time.
(3) When the seconds on the digital time dis-
play read “0”, push the crown in to start
the hands.
(4) After setting the time, always lock the
crown.
Screw Lock Crown
• When operating the crown, loosen the crown’s screw first.
• Return the crown to its normal position after operation, and always lock it.
• Do not operate any button when the crown is pulled out.
• Do not operate the crown when there are drops of water on the watch or
when it is underwater.Water can get inside the watch and result in malfunction and damage.
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27
Time adjusting
position
A
“Alarm Set
Time” or “OFF”
Alarm ON Mark
B
M
A
AL
G. HOW TO USE THE CHRONOGRAPH
The chronograph can measure up to a maximum of 99 minutes 59 seconds in
units of 1/100 second.
When it gets to 100 minutes, it returns to the reset display (0 seconds) and
stops.
Display during measurement
• Within 1 minute ...“Seconds and 1/100 Second”
are displayed.
• 1 minute or more ...“Minutes and Seconds” are
displayed during measurement.
...When measurement is
stopped, or when the split
time is shown, the display
alternates every second
between “Minutes and
Seconds” and “1/100
Second”.
< Alarm ON/OFF >
Switch the alarm on or off by pressing button
A
.
• Alarm ON ...The alarm set time and the alarm ON mar k
(
(
(•)
))appear on the
digital display.
• Alarm OFF ...OFF appears on the digital display.
< Alarm monitor >
When the alarm display is normal, press button
A
to check the alarm sound.
* If the watch is left alone for about 3 minutes in the alarm time correction
state (flashing display), the alarm time correction state is automatically
cancelled and the watch returns to the alarm’s normal display.
* If the watch is left alone for about 3 minutes in the alarm’s normal display, it
automatically returns to the Time/Calendar Mode.
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29
“Seconds and 1/100
Seconds” or
“Minutes and
Seconds”
BA
M
< Switching modes during chronograph measurement >
Measurement continues even if you press button
M
during chronograph measurement and switch to another mode.It is therefore possible to return to the
chronograph again to show the continued measurement.However, if you switch
to the Dive Mode of the Diving Modes, chronograph measurement is cancelled
and the watch returns to the reset display.
Split time:The time elapsed from the start.
< Accumulated time measurement >
(1) Press button
A
to start or stop.
(2) When stopped, press button
B
to reset.
• There is a confirmation beep upon
start, stop or reset operations.
< Split time measurement >
(1) Press button
A
to start or stop.
(2) Pressing button
B
during measurement displays a split time for about 10
seconds *1. (SP flashes on the display when a split time is being shown.)
You can make repeated split time measurements.
(3) When stopped, press button
B
to reset.
• There is a confirmation beep upon start, stop, split time or reset operations.
*1:The watch automatically returns
to the measuring display after
10 seconds.
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31
RESET MEASURE STOP
RESET MEASURE
SPLIT TIME
STOP
A
A
B
A
A
A
B
B
* If the watch is left for about 3 minutes in Chronograph Mode in the reset
state, it automatically returns to the Time/Calendar Mode.
Start Goal
Split time
Split time
*1
A
< Recalling log data >
Each time you press button
A
when the log no.is displayed, the following log
data appears in this order.
H. HOW TO USE THE LOG MODE
When you switch to Dive Mode and start diving, this watch automatically
records the log data (log no., date, dive start time, maximum depth and dive
time) for the 4 most recent dives. You can recall this log data after the dive.
< Switching the Log No. >
(1) In any of the Time Modes, press button
M
for 2 seconds or more to set the
Log Mode.
(2) Each time button
M
is pressed, you can recall the log data of the last 4
dives in reverse order starting from the most recent dive.
• If you press button
M
again when Log No.4 is
displayed, the watch will change to Depth
Alarm Mode.
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33
DIVE
Log No.
Last dive
Log Mode
Log No. 1 Log No. 2 Log No. 3 Log No. 4
Next to last
Second from last
Third from last
MMM
M
Depth Alarm Mode
Dive Time Alarm
Mode
M
M
Log No.
Dive Date
Dive Start Time Maximum Depth
Dive Time
BA
M
A
A
A
A
A
LOG
DIVE
LOG
LOG
DIVE
LOG
DIVE
LOG
DIVE
4. Maximum Depth: The greatest depth reached during that dive.
5. Dive Time: The total time spent at a depth of 1m (4ft) or more during
that dive.
If you come up to a depth within 1m (4ft) but dive back
down to a depth of 1m (4ft) or more within 10 minutes,
the dive time is continued from the moment it stopped.
•
The measurement displayed is up to a maximum of 399
minutes. (Measurement is displayed in units of 1 second
up to 99 minutes 59 seconds, then in units of 1 minute).
It then starts over again from 0 seconds.
* If you dive at a depth within 1m (4ft) for more than 10 minutes and then dive back
down to a depth of 1m (4ft) or more, the watch will consider this as a second dive
and record the log data of two separate dives.
< Cancelling log data - when you want to cancel all
recorded log data >
If you press button
B
for 2 seconds or more while
pressing button
A
, all log data (of 4 dives) is cancelled.
There is a confirmation beep when this happens.
* You cannot cancel data items separately.
• If there is no log data recorded, “----” appears on the Log No.display when
you press button
A
.
• When the abnormal depth alar m (“ER” is displayed) is activated during a
dive, the maximum depth data flashes on the display.
• If something goes wrong with the pressure sensor, “Log No.” and “ER” are
alternately displayed when you recall the log data.
• When you start a new dive, the log data of the oldest of the 4 dives recorded is automatically erased.You should record any data you may need in a
log book before it is erased.
• If the watch is left for about 1 hour in Log Mode, it automatically returns to
the Time Modes.
< Explanation of log data terms >
1. Log No.: The number which shows the sequence in which log
data was taken.
The most recent log data is No.1, and the log no. of the
oldest dive is No.4.
2. Dive Date: The date the dive took place.
3. Dive Start Time: The time at which diving at a depth of 1m (4ft) or more
began.
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35
LOG
B
A
M
DIVE
* In addition, this watch has a ascending speed warning function which alarm
sounds for 10 seconds to warn you if the ascending speed exceeds 1.5m
(5ft) in 10 seconds.
* Be careful when using the various kinds of alarms because their sound
might be difficult to hear depending on the surrounding circumstances (such
as the sound of bubbles) or the way the watch is carried.
1. HOW TO SET THE DEPTH ALARM
(1)
Press button Mto switch to the Depth Alarm Mode.
The depth display flashes on and off.
(2) Press button
A
to display the depth at which
you want the alarm to sound. Depth alarm
setting is now completed.
Each time you press button
A
, you can adjust
the depth in increments of +1m (5ft) from 1 ➡ 2
➡ 3 ... 79 ➡ 80 ➡ -- ➡ 1 ... .(5 ➡ 10 ➡ 15 ...
255 ➡ 260 ➡ ... 5)
You can adjust quickly by keeping button
A
pressed down.
* Display “--”for the depth alarm not to sound.
I. HOW TO USE THE DEPTH/DIVING TIME ALARM
There are the following 2 alarm functions in this watch’s Diving Modes.
1 Depth alarm function: • Set range: 1m-80m/5ft-260ft (1m/5ft units)
• The alarm sounds for 15 seconds when you
reach the set depth while diving.
After the alarm sounds once, if you continue
diving deeper than the set depth then the alarm
repeatedly sounds for 15 seconds every 1
minute.
If you return to a shallower point than the set
depth, the alarm stops.
2 Diving time alarm function: • Set range: 5-310 minutes (5 minute units)
• The alarm sounds for 30 seconds when you
exceed the set time after the dive starts.
* This alarm only sounds once.
✩ You can stop both the depth alar m and the diving time alar m by pressing
button
A
.
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37
DIVE
Depth (m)
BA
M
AL
J. HOW TO USE THE DIVE MODE
Pressing button Bwhen in any of the Diving Modes (Log Mode, Depth Alarm
Mode and Diving Time Mode) switches the watch to Dive Mode.
If you switch to this mode before diving, the depth measurement is always displayed during the dive.You can also check the diving time and the maximum
depth by button operation during the dive.
The surrounding pressure when this watch is switched from Time Modes to
Diving Modes is set to 0m (0ft) as the depth measurement standard.
Therefore, if there is an extreme change in atmospheric pressure after selecting Diving Modes and before actually diving, the display may be different
from the actual depth. In order to carry out correct depth measurement,
switch to Diving Modes just before diving.
2. HOW TO SET THE DIVING TIME ALARM
(1) Press button Mto switch to the Diving Time
Alarm Mode.
The diving time display flashes on and off.
(2) Press button
A
to display the time when you
want the alarm to sound.The diving time alar m
setting is now completed.
Each time you press button
A
, you can adjust
the diving time in increments of 5 minutes from 5
➡ 10 ... 305 ➡ 310 ➡ -- ➡ 5 ... .
You can adjust quickly by keeping button
A
pressed down.
* Display “--”for the diving time alarm not to sound.
[Diving alarm monitor]
In Depth Alarm Mode or Diving Time Alarm Mode, if you keep button
B
pressed down while pressing button A, you can make the different alarms
sound repeatedly for 4 seconds each in this sequence: depth alarm ➡ diving
time alarm ➡ ascending speed warning alar m.
38
39
DIVE
Diving time (minutes)
BA
M
AL
< Dive Mode end >
• When the depth display is 0.0m/0ft (within 1m/4ft), pressing button
B
for 2
seconds or more switches the watch to Log Mode.
• When the depth display is 0.0m/0ft (within 1m/4ft), pressing button
M
for 2
seconds or more switches the watch to Time Modes.
• If the watch is left for about 1 hour with the depth display at 0.0m/0ft (within
1m/4ft), it automatically switches to Log Mode.
✩ If you press button Awhile diving, the diving time is displayed for 2-3
seconds. If you press button
A
again while the diving time is displayed, the
maximum depth is displayed for 2-3 seconds.
* Never operate the crown or any push button except button
A
during a dive.
This will impair the water-resistance of the watch.
40
41
DIVE DIVE
[Display within 1m] [Display deeper than 1m]
eg. 12.5m
Depth display
Crown
AB
MM
BA
Crown
2. DIVING TIME MEASUREMENT
Diving time measurement automatically starts
when the depth measurement is 1.0m (4ft) or
deeper, and stops when the depth measurement is within 1.0m (4ft).
However, if the depth returns to 1.0m (4ft) or
deeper within 10 minutes, measurement of the
diving time continues to be displayed from the
point when it was stopped.
Diving time measurement:
within 100 minutes: minutes and seconds
100 minutes or more: minutes
Diving time display range:
0 minutes 00 seconds - 399 minutes
Diving time measurement range:
0 minutes 00 seconds - 400 minutes (repeated)
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1. DEPTH METER DISPLAY
The first water depth measurement is taken at
1.0m (4ft.) and displayed;measurement is
done every second and is displayed.
Unit of water depth measurement ... 0.1m (1ft)
Measurement range ... 1.0m - 80.0m (4ft -
260ft)
When water depth is within 1.0m (4ft):
display reads 0.0m (0ft)
When water depth is over 80.0m (260ft):
display reads ---
When ER and the depth are alternately
displayed during a dive...
This indicates that there is something wrong
with the depth measurement.
ER and the depth are alternately displayed
until Dive Mode is ended.
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DIVE DIVE
Depth
Depth
Within
10 minutes
Stop
Start
[up to 99 minutes 59 seconds]
[100 minutes or more]
Start
DIVE
DIVE
0m
DIVE
0m
1m
25.5m
80.0m
DIVE
DIVE
DIVE
DIVE
DIVE
1m
2. ABNORMAL DEPTH WARNING
FUNCTION
During water depth measurement, the watch recognizes a sudden change in depth of 4m (15ft) in 1
second as abnormal, and ER and the current depth
alternately appear on the digital display.
ER and the current depth are alternately displayed
until Dive Mode ends.
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K. THIS WATCH’s WARNING FUNCTIONS
This watch has the following 2 warning functions.
Please use them as a guide for safe diving.
1. ASCENDING SPEED WARNING
FUNCTION
If the ascending speed during a dive exceeds
1.5m (5ft) per 10 seconds, this alarm sounds
for 10 seconds as a ascending speed warning.
When the ascending speed warning alarm is
sounding, the digital display alternately
shows SLW and the current depth.
The alarm continues
to sound until the
ascending speed
becomes normal.
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15.0m
25.0m
DIVE
0m
DIVE
DIVE
DIVE
[When ER (error) is displayed during use]
• When ER is displayed during use on land or when the watch is switched to
Diving Modes.
• When the ER display is not cancelled even a long time after a dive is finished.
In the above cases, there might be something wrong with the pressure sensor.
In such a case, stop using the watch and consult someone at the place of pur-
chase or your nearest Citizen Service Center.
[You cannot switch to another mode from Dive Mode]
If there is a pressure change of 1m/4ft or more while in Dive Mode in an environment where pressure changes occur for short periods of time (high altitude,
in the airplane), the water depth measurement display does not return to 0.0m
(0ft) even when you land, and you might be unable to cancel Dive Mode.
If this happens, pull out the crown and Dive Mode will be cancelled.
If you cancel Dive Mode in this way, the log data will not be recorded.
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L. IN CASE OF THE FOLLOWING
[The second hand moves at 2-second intervals]
The battery is nearing the end of its life, and the low battery warning device is
working.
When this happens, replace the battery as soon as possible.
(Even when this happens, the watch still keeps the correct time.)
Note that the following cannot be done when the watch is in this state.
1.The alar ms do not sound.
2.You can switch to Diving Modes, but not to Dive Mode.
3. If this function is activated with the depth measurement display, the diving
alarm will not sound. If this happens, stop diving.
Request battery replacement by Citizen at the place of purchase or
send directly to a Citizen Service Center.
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M. ALL RESET
All Reset cancels all stored data, so please record any necessary
data in a logbook beforehand.
(1) Pull the crown out.
(2) Press all three buttons simultaneously, then
release them.
(3) Push the crown in to its normal position.
There will be a confirmation beep.
All data is erased after All Reset, so set
each mode again correctly before use.
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[If the watch’s display or operation is abnormal]
If a strong impact or strong static electricity is applied to the watch, abnormal
display or operation (such as the digital display malfunction or the alarm
continuing to sound) might occur on a rare occasion.
If this happens, carry out “M. ALL RESET”.
[After battery replacement]
After replacing the battery, always carry out procedures in “M. ALL RESET”.
If you do not, the watch may not work correctly.
48
A
All Reset operation position
Normal position
3 Battery replacement
(1) All battery replacement comes under Citizen Service Center repairs, so
request it at the place of purchase or send directly to a Citizen Service
Center.
(2) Checks such as a water-resistance inspection and any necessary packing
replacement are carried out during battery replacement.
(3) All the log memo, from the maximum depth memo onwards, is erased by
battery replacement, so record it beforehand in a logbook.
(4) If a battery that has reached the end of its life is left in the watch, it will
cause damage by leaking.You are advised to replace the battery
immediately.
(5) If you use the watch abroad for a long time, you may not be able to receive
after-sales service, depending on the location, so you are advised to
replace the battery before you leave.
(6) You are charged for battery replacement and the accompanying inspection
and parts replacement even within the warranty period.
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N. BATTERY
1 Battery life
The life of the battery is about 2 years after installation.
< Approximate conditions of use >
Time alarms: 15 seconds/day
No.of dives: 50 dives/year (time of 1 dive:1 hour)
• Depth alarm ... 45 seconds/dive
• Diving time alarm ...30 seconds/dive
The life of the battery may be shorter depending on how much the alarms,
chronograph, etc. are used and depending on the number of dives and the time
of each dive.
2 The first battery
The battery already installed in the watch when you purchase it is a monitor
battery for looking at the functions and performance.
This battery might run out within 2 years of purchase.
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2. NO DECOMPRESSION LIMITS
The range of time when it is unnecessary to stop to decompress while
surfacing from a dive is determined by the depth and time of the dive.
These values are referred to as “No Decompression Limits.”Use these as
estimates when diving.
No Decompression Limits, based on the U.S. Navy Diving Manual (1993), are
printed on the band of this watch. (Some models may not have this chart.)
<Reading the chart>
DEPTH. m - -N.D. TIME
12 m (40ft) - -200 Min.
15 m (50ft) - -100 Min.
18 m (60ft) - - -60 Min.
21 m (70ft) - - -50 Min.
24 m (80ft) - - -40 Min.
27 m (90ft) - - -30 Min.
30 m (100ft) - - -25 Min.
33 m (110ft) - - -20 Min.
36 m (120ft) - - -15 Min.
39 m (130ft) - - -10 Min.
42 m (140ft) - - -10 Min.
45 m (150ft) - - - -5 Min.
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O. OTHER FUNCTIONS
1. REGISTER RING
The register ring means the rotating bezel fitted around the watch body.
• This is used when measuring elapsed time or time
remaining.
< Using the register ring >
Before starting a dive, rotate the register ring to the
left so that the • mark is lined up with the minute
hand.You can know the elapsed time from that point
by reading what the minute hand indicates on the
scale on the register ring.
Example: In the diagram on the left, the register ring
indicates that 10 minutes have elapsed from the start
of the dive (from the • mark position).
CAUTION
• The register ring can only be rotated in a counterclockwise direction in order
to prevent operation error. Trying to force the register ring to rotate in a
clockwise direction will damage it.
• When you use the register ring, allow some leeway in the set time and
always use it as an approximate guide.
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1
0
2
0
3
0
4
0
5
0
Time elapsed: 10 minutes
Caution: The no decompression limit
is different depending on body condition or personal differences. Please
use the no decompression limits on
this watch as a guideline.
When a dive requires no decompression limits, make sure you follow a
specialized divers manual.
Example: If the diver is at 21m (70ft.)
for 50 minutes or less, then it is OK to
surface without stopping to decompress.
* This No Decompression Limits table
is for 1 dive.
30
N.D.LIMITS
DEPTH.M N.D.TIME
12
15
18
21
24
27
200
100
60
50
40
30
30
33
36
39
42
45
25
20
15
10
10
5
No
Decompression
Limits
55
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water sports and skin diving (without air tank)
scuba diving (with air tank)
saturated diving (helium
gas)
pulling the crown out when
the watch is wet
OK OK NO NO
Indication
WATER-RESIST
200 m
WATER-RESIST (ANT)
washing face or getting wet
in the rain, when splashed
over it and no water pressure is applied to it
OK OK
Dial Case back
P. CARE OF YOUR WATCH
Water-resistance
swimming and general
washing work (kitchen
work/car washing, etc)
Water-related use
1. Notes on Water-Resistance
a.This diver’s watch has the water-resistant construction for diving up to 200m
and withstands water pressure up to 200m deep.The crown is screw-lock
type.Tighten the screw completely before use.
b. All maintenance services including battery replacement must be carried out
by a Citizen Ser vice Center.
c. Subject the watch to a water-resistance check at the time of battery replace-
ment or every one or two years to maintain the water-resistance of the watch
2. Pressure Sensor
•Never disassemble the sensor cover which protects the pressure sensor.
• Be careful that foreign objects such as sand, dust or other matter does not
enter into the sensor.If such objects have entered into the sensor, wash it
away with fresh water. Do not use alcohol, gasoline, thinner or other chemical substances.
• If you cannot clean the sensor, take the watch to a Citizen Service Center.
5.Temperature
Avoid exposing the watch to direct sunlight or leaving it in extremely hot or cold
locations for a long period 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.
6. Shock
• This watch will withstand the bumps and jars normally incurred in daily use
and while playing such non-contact sports as golf and catchball.
• Dropping the watch on the floor or otherwise imparting severe shock to it
may cause malfunctioning or damage.
7. Magnetic Fields
This watch is antimagnetic up to 60 gauss and not affected by the magnetic
fields produced by ordinary household electric appliances. If used in the
immediate vicinity of strong magnetism, however, the watch’s functions may
temporarily be affected.
8. 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.
57
3.Watch Band
• If the watchband shows cracks, replace it with a new band.
• When replacing the watchband also replace the spring bars connecting the
watch and the band.
4.Water resistance
• This diver’s watch is designed to resist water pressure to a maximum depth
of 200 meters. Before using this watch under water, push the crown in and
tighten the screw lock completely.
• All services after sale including batter y replacement are provided by the
Citizen Service Center.Never have the case back opened or the screws on
the sensor loosened at facilities other than the Citizen Service Center.
•In order to maintain water-resistance, we recommend that you have the watch
checked at the Citizen Service Center at the time of battery replacement
once every one or two years.
• The case back is marked “DO NOT OPEN. SERVICE
CENTER REPAIR ONLY.”
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C
E
E
C
N
I
T
V
E
R
R
E
S
!
N
E
P
O
T
O
N
O
D
R
E
P
A
A
I
R
O
N
L
Y
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9.Chemicals and Gases
Avoid wearing the watch in the presence of strong chemicals or gases. If the
watch comes in contact with such solvents as thinner and benzine or products
containing materials such as gasoline, nail polish, detergent or adhesive, its
components may discolor, dissolve or crack.Be especially careful to avoid
chemicals.The watchcase or band may discolor if they come in contact with
mercury from a broken thermometer or other equipment.
10. Luminous Display
In some watches, Luminous paint is applied to the hands of the watch for use
in dark areas.This does not cause any health problems since the amount of
luminous paint used in the watch is well within the limit allowed and is protected by the glass.Even if the amount used is extremely small, luminous paint is
a hazardous substance. If the glass is broken, avoid touching the paint and
bring it immediately to the Citizen Service Center for repair or replacement.
58
11. Safekeeping
If you do not use the watch for an extended period of time, wipe off perspiration, soil and moisture thoroughly and keep it in a place not exposed to
extremely high or low temperatures or high humidity. Don’t leave a dead battery
in the watch for a long time.Always be sure to replace it with new one. If battery fluid leaks out, it may damage movement components.
12. Keep Y our Watch Clean
Wipe off soil and moisture from the glass with a soft, absorbent cloth. If you
wear the watch when the back side of the case and watchband is soiled they
may cause a skin rash as they come in direct contact with your skin. Keep your
watch clean also to avoid staining your cuffs. How to clean the watchband:
• Metal band Wash soiled parts with a tooth brush in mild, soapy water.
• Rubber band Wash in water.
Do not use solvent.
Chronograph: minutes, seconds, 1/100 seconds, split
time, (100 minutes system)
Log Memo:
Log No.... 1 - 4
Dive date ... month, date
Dive start time ... hours, minutes
Maximum depth ... 1.0 - 80.0m (4ft - 260ft)
* 0.0m (0ft) displayed within 1.0m/4ft, ---m/---ft
displayed over 80.0m/260ft.
Diving time ... 00 minutes 00 seconds - 399 minutes
* Stored log data memos for the last 4 dives can be
recalled.
Dive Mode:
Depth measurement display ... 1m - 80m/4ft - 260ft
(0.1m/1ft units)
* ---m/---ft displayed over 80.0m/260ft.
Diving time measurement ... 400 minute measurement
(1 second units)
* From 100 minutes to 399 minute
s, display is in 1
minute units.
61
60
Q. SPECIFICATIONS
1. Model C520 (depth indication is in meters)
C526 (depth indication is in feet)
2. Accuracy of time measurement average ±20 seconds/month (at normal temperature
5˚C - 35˚C/41˚F - 95˚F)
3. Accuracy of depth measurement ± (3% of indicated value + 30cm/1ft)
when used at a constant temperature.
* Assured accuracy temperature range: 10˚C -
40˚C/50˚F - 104˚F
Accuracy of depth measurement is affected by
changes in the surrounding temperature.
4.Watch operation temperature range -10˚C - 60˚C/14˚F - 140˚F
5. Display functions 1) Analog display
Time: hours, minutes, seconds
2) Digital display
Time: [hours, minutes] and [seconds] (switch display)
Calendar: [Date, day of the week] (year and
month displayed only during adjustment)
Alarm: hours, minutes/OFF
63
Depth alarm ... 1m - 80m/5ft - 260ft (1m/5ft units)
Diving time alarm ... 5 minutes - 310 minutes (5
minute units)
6. Additional functions ● Ascending speed warning function
● Abnormal depth warning function
● Low battery warning device
● Diving alarm monitor
7. Battery to be used 1 lithium batter y
8. Battery life approximately 2 years (after installation of a new
battery)
< Approximate conditions of use >
Time alarms: 15 seconds/day
No.of dives: 50 dives/year (time of 1 dive: 1 hour)
• Depth alarm ... 45 seconds/dive
• Diving time alarm ... 30 seconds/dive
* Specifications are subject to change without notice.
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