Citizen | BJ2117-01E | Instruction manual | Citizen BJ2117-01E Instruction manual

Citizen BJ2117-01E Instruction manual
CITIZEN QUARTZ
Eco-Drive
AQUALAND
Model No. BJ2XXX
Cal. No. B74❈
Safety precautions
(Instructions to be followed at all times)
In order to prevent injury to yourself or other
persons or damage to property, this manual gives
instructions which you should strictly follow as
described below
■ Injury and/or damage which might be caused by
using the watch improperly or neglecting any of
the instructions or precautions in this manual are
classified using the following symbols.
Can cause serious injury or death.
Can or will cause minor or moderate injury or damage.
■ The instructions for safe operation are classified
using the following symbols.
(The following are just examples of symbols.)
Warning or caution symbol followed by instructions for safe operation and/or precautions that you should take.
Prohibition symbol followed by instructions on what you should not do
WARNING
• Diving is one of the sports involving many risks.
When using this watch for diving, carefully read
this manual and follow the instructions with good
understanding of the proper way to use it.
This watch is an analog solar powered diver's
watch into which an electronic depth meter function
and chronograph function are built. The solar power
generation function transforms solar energy to
electrical energy to run the watch.
• Since solar energy is used as the power source of
this watch, it has no need of regular replacement
of the battery unlike the general diver’s watches
using the mercury cell, etc. (Solar power function)
• The built-in depth meter function automatically
measures the depth in diving with the watch worn
on the wrist. (Depth meter function)
• The maximum depth in diving is automatically
memorised. (Maximum depth memorising
function)
• The chronograph function measures the time in
units of one second for 50 minutes at maximum.
Any repair of this product should be conducted at
a Citizen Service Centre. For repair and
inspection please contact the place of purchase
or contact a Citizen Service Centre directly.
• Before using this watch,
carefully read this instruction
manual for safe and correct use.
• After reading this manual, keep
it at hand for future reference.
Since the depth meter function of this watch is
not approved as an official depth gauge, be sure
to use this function as an auxiliary means to know
the approximate depth.
• Diving with this watch must be limited to
recreational diving (diving without decompression).
Don’t use this watch for decompression diving,
saturated diving or diving in a high altitude. The
depth meter function of this watch works normally
in seawater with temperatures of +10˚C to +40˚C
(50˚F to 104˚F), however, depth indication is
incorrect in water other than seawater (specific
gravity: 1.025).
• Rapid and sharp change of the atmosphere and/or
seawater temperature occasionally affects the
indication and performance of the watch.
Therefore, it is recommended that this watch be
used together with another depth gauge. Read the
indication of this watch as a rough guideline.
• Even recreational diving involves many risks.
Before using this watch as an auxiliary instrument
for diving, be sure you receive right training in
scuba diving by a qualified instructor in order to
acquire experience and technique necessary for
safe diving as well as to master the proper way to
handle and operate this watch.
1. BEFORE USING
“Battery” means a secondary battery (rechargeable
battery) in this manual. Before using, make sure
the watch is sufficiently charged by exposing it to
the light.
A secondary battery is used in this watch to store
electrical energy. If the battery is fully charged once,
the watch will continue running for about two months.
When the watch is used for diving (about two hours
a week), it will run for about one month (until NG is
indicated).
<How to use this watch properly>
It is recommended that you recharge the battery
every day. To ensure that this watch demonstrates
its depth meter function and chronograph function
besides the timekeeping function, always keep it
sufficiently charged.
If the battery is not sufficiently charged or the
battery power is very low, the depth meter function
and the chronograph function cannot be activated.
The battery of this watch is protected from
overcharge.
* For recharging the battery, expose the solar cell
(the face of the watch) to light.
2. BEFORE USING FOR DIVING
CAUTION Before using this watch for diving
• For using this watch as an auxiliary depth gauge,
the user must not only receive general training and
instructions in diving but also follow various rules.
• The user should not use this watch without a good
knowledge and understanding of the proper way
to handle and operate it and the precautions on it.
If this watch is improperly used, it may result in
malfunction or breakdown of the watch.
WARNING Regarding the depth meter function
• Since the depth meter function of this watch is not
approved as an official depth gauge, use this
function as an auxiliary means to measure a depth.
• Read the depth meter indication of this watch as a
rough guideline.
CAUTION For safe diving
1
• When diving, obey the rules of the buddy system
every time.
• For safety, it is advised that you enjoy sports diving
in the depths around 20m (60 ft).
• Before diving with this watch, fully charge the
battery without fail. When the battery is not
sufficiently charged (the function hand points at
“NG”), the depth meter function cannot be used.
If battery power declines considerably during
diving, the depth meter function to measure depth
is discontinued.
• After diving, take a good rest following safety rules.
If you take a plane or move to a high place without
sufficient rest after diving, you may suffer from
decompression sickness (caisson disease).
*1: Buddy system means that two divers pair with each
other for safe diving.
PROHIBITION Circumstances that prohibit
use of this watch in diving
Don’t use this for diving under the following
circumstances.
• When the function hand indicates “NG” on the
charging level index.
• When the function hand indicates “NG” on the
charging level, the watch will not measure the
depth. If the function hand points at “NG” on the
charging level during diving, immediately stop using
the depth meter function of the watch since the watch
discontinues depth measurement in this condition.
• When the watch stops running or malfunctions.
(Be careful not to knock the watch against hard
things such as diving apparatus, rocks, etc.)
• When the water temperature is out of the
guaranteed range for measuring depth.
The accuracy of the depth meter function is
guaranteed under the condition that water
temperature is between +10˚C and +40˚C (50˚F
and 104˚F).
• For the purpose of knowing a risk of a behaviour
or situation.
This watch is not designed to serve as a drowning
prevention instrument or an emergency instrument.
• In the environment filled with helium gas (saturated
diving, etc.).
Use of the watch in such conditions may cause
failure or breakdown of the watch.
CAUTION
Matters that require attention to the watch
before/during/after diving
<Before diving>
• Check to see if the watch is set to the time mode.
(When the watch is set to the chronograph mode,
it will not shift to the diving mode.)
• Check the indication of the function hand (on the
charging level index). When the function hand points
to “NG”, the watch will not shift to diving mode
because of insufficient battery power. If the function
hand points to “NG”, charge the battery sufficiently
so that the hand indicates “LV.2” or “LV.1”.
• Check to see if the function hand (serving as the
depth indicator) points to “0 m (0 ft)” position when
the water sensor is activated and the watch enters
the diving mode.
• Check to see if the crown is completely pressed in
and screwed down tightly.
• Check to see if the watchband and the watch are
tightly fastened to each other.
• Check to see that there are no cracked, damaged
or broken parts on the watchband and glass.
• Check to see if the rotating bezel rotates normally.
• Check to see if the time and date are set correctly.
<During diving>
• Avoid quick ascending, otherwise you may suffer
from submarine sickness or a functional disorder in
some way. Whenever you ascend in water, carefully
keep a safe speed.
• Don’t disturb any push buttons or the crown except
button B (for knowing the memorised maximum
depth) throughout the dive, otherwise the watch
may fail in water-resistance.
<After diving>
• After confirming that the crown is screwed down
tightly, wash out seawater, mud, sand, etc.
sticking to the watch, with fresh water. Then, wipe
off water and moisture with a dry soft cloth.
• Neither remove the sensor cover nor pick at it with
a sharp-point in order to remove particles of dust,
etc., collected in the sensor. If the sensor part is
packed with dust, etc., wash it out with fresh
water. In case it is difficult to wash out dust,
consult the nearest Citizen Service Centre about
the trouble.
CAUTION Regarding diving at high altitudes
or in fresh water
• If you intend to use this watch for diving in a high
place or in fresh water, be sure to have a special
education in safe diving beforehand.
• Don’t use the depth meter function of this watch in
a high place 4,000 m (13,120 ft) or more above
sea level, because the watch gives incorrect
measurement of depth in such a place.
• This watch indicates a depth based on the specific
gravity (1.025) of seawater. Therefore, if the
watch is used in fresh water, the real depth is
2.5% less than the indication on the watch.
Example: 20 m (65 ft) (indicated depth) x 1.025 =
20.5 m (67 ft) (real depth)
When the watch is shifted to the diving mode, the
pressure sensor regards the ambient pressure as
that on the sea level (0 m/0 ft in depth or
altitude). If the watch is shifted to the diving mode
in a high place, it regards the pressure on the
surface of the water as that on the sea level
(namely 0 m/0 ft in depth altitude). In short, the
watch always regards the surface of the water as
the sea level (0 m/0 ft) except in a place 4,000 m
(13,120 ft) or more above sea level. Therefore,
you are advised not to use the depth meter
function of this watch in a high place 4,000 m
(13,120ft) or more above sea level for the reason
that the watch gives incorrect measurement of
depth in such a place as mentioned previously.
3. NAMES OF PARTS
Collate the following table with the watch diagram
on the first page.
Name
Time mode
Diving mode
Chronograph mode
A : Button A
To be pressed for selecting a mode
B : Button B
To be pressed for showing maximum depth left in the memory or for actuating
the chronograph.
1: Function hand
Indicates charging level
Indicates depth
Indicates second(s)
2: Mode hand
Stops at DV position
Stops at DV position
Indicates minute(s)
3: Hour hand
Always indicates the time (hour)
4: Minute hand
Always indicates the time (minute)
5: Second hand
Always indicates the time (second)
6: 24 hour hand
Always indicates the time in the 24 hour system synchronised with the hour hand.
7: Calender
Always indicates the date.
8: Crown
To be used for adjusting the date and time.
a: Charge levels
Charge level of the battery
(battery power) is indicated
as follows (LV.1, LV.2, NG) by
the function hand. These
guidelines indicate whether
the depth meter function is
usable or not.
b: Overzone mark
When the diving depth
exceeds 50 m (125 ft) or
there is something abnormal
in the depth meter function,
the function hand points to
the overzone mark.
c: Depth meter scale The diving depth is indicated
by the function hand on this
depth meter scale.
d: Pressure sensor
Measures the depth by
sensing the water pressure.
e: Water sensor
When the water sensor gets
wet, the watch is
automatically shifted to the
diving mode.
f: Rotating bezel
The diver can know the
elapsed time of diving by
using this rotating bezel.
g: Solar cell
Electric energy necessary for
running the watch is
generated by this solar cell
when it is exposed to enough
light for charging the battery.
4. WARNING FUNCTIONS OF THIS SOLAR
POWERED WATCH
With decline of the battery power of this watch, its
warning function is activated to change the indication.
Charge level indication
The function hand indicates the charge level as
follows (LV.1, LV.2, and NG) to let the user know
whether the watch can be used for diving or not.In
the diving mode, consumption of battery power is
considerably increased because the pressure
sensor and water sensor are actuated. Before using
this watch for diving, charge the battery sufficiently
and confirm the charging level which is indicated by
the function hand.
<When the function hand points at
LV.1 (at 56-seconds)>
The watch is securing battery power
enough for sports diving at the depth
of 20 m (66 ft) or so for about an hour.
* However, when the function hand points at LV.1
as a result of charging the battery after it was
once depleted (after the status that the function
hand indicated NG), be sure to charge the battery
with a lighting of 3000 lux (20 cm under a
fluorescent lamp) for at least 10 minutes before
diving.
* If diving continues for more than one hour, pay
careful attention to the indication of the function
hand, because the indication may change to NG
from LV.1 during the diving and the watch may
discontinue measuring the depth.
<When the function hand points
at “LV.2” (54-seconds)>
The battery is almost fully charged.
Accordingly, the watch can be used
reliably for diving.
<When the function hand points
at “NG” (58-seconds)>
The watch will not switch to the diving
mode because of insufficient charging.
When the watch is in this status, it
cannot be used for diving because its
depth meter function cannot be
activated.
If the function hand points to “NG” during a dive,
immediately stop using relying on the watch for
depth measurement.
CAUTION
• Use the indication of the charge level as a
reference only.
• If the watch is exposed to strong light for charging
the battery, the function hand may temporarily
indicate “LV.1” or “LV.2” despite insufficient charging.
If the function hand goes to “LV.1” or “LV.2” from
“NG” position in a short time, you need to pay
careful attention to charging conditions.
It is recommended that you keep the battery
sufficiently charged all the time but especially
before using the watch for diving. Always check
the indication of charge level carefully just before
diving. (For details of charging time, refer to
“5. TIME REQUIRED FOR CHARGING”.)
Insufficient charge warning function
Insufficient charge warning indication
– Mode hand: DV position,
Function hand: NG position.
Whenever the battery power
becomes insufficient for operation,
the watch is automatically shifted to
Time mode regardless of the
currently set mode and the second
hand goes for 2 second interval
movement.
(Insufficient charge warning indication)
If the watch is left in this condition without recharging
for another two days, the watch will stop.
* If the watch falls into such condition, the time
measurement will be discontinued in chronograph
mode.
* While the watch is falling into insufficient charge
warning indication, all button operations are
ineffective except the max. depth operation.
Since the watch continues accurate indication of
the date and time even in the insufficient charge
warning indication, the watch will recover normal
operation if it is exposed to light for sufficiently
charging the battery. or using the watch for diving,
sufficiently charge the battery until the function
hand indicates “LV.1” or “LV.2” on the charge level.
Stop warning function
Stop warning indication
– Mode hand: “0” position,
Function hand: “0” position
If the watch is left in the insufficient charge warning
indication for two days, both the mode hand and
function hand will move to “0” position respectively.
If the watch falls into this condition, it indicates that
the watch has stopped operation completely. (Stop
warning indication)
* All functions of the watch are inactivated in this
indication.
When the battery is charged in this condition, the
watch restarts operation as it is switched to the
time reset warning indication.
Time reset warning function
Time reset warning indication
– Mode hand: DV position,
Function hand: NG position
With progress in charging the
battery as the watch is exposed to
light, the watch starts running but
shows incorrect time. In this condition the second
hand moves irregularly every two seconds to show
that the time is incorrect. (Time reset warning
indication)
To change the watch to the time mode, reset the
watch correctly after sufficiently charging the
battery.
* In the case the battery is sufficiently charged
but the watch has not been reset to the correct
time, the second hand continues to go
irregularly every two seconds.
Overcharge prevention function
This watch has an overcharge prevention function.
When the secondary battery is fully charged, this
function is activated to protect the battery from
overcharge by cutting of power supply. This function
relieves you from worry about overcharge.
5. TIME REQUIRED FOR CHARGING
Since time required for recharging the battery
varies according to a model (depending on the dial
colour, etc.), refer to the following table as a rough
guideline for charging the battery.
Illuminance
(LUX)
Time required for charging
Environment
Charging time
for one-day
operation
Charging time required
to make the second
hand move normally
from the watch stop
status.
Charging time
required for fully
charging
500
Under indoor lighting
2 hrs
16 hrs
134 hrs
1,000
60-70 cm (24-28 in.) under a
fluorescent lamp (30 W)
50 mins
6 hrs 30 mins
57 hrs
3,000
20 cm (8 in.) under a
fluorescent lamp (30 W)
16 mins
2 hrs 30 mins
18 hrs
Cloudy outdoor
4 mins
1 hr
5 hrs
Under bright sunlight in summer
2 mins
45 mins
2 hrs 30 mins
10,000
100,000
* Each time required for charging means a duration
in which the watch is continuously exposed to the
light indicated.
Charge time required for fully charging:
Time required for fully charging the battery, starting
from the state that the watch has stopped operation
(in the stop warning indication).
Charging time for one-day operation:
Time required for charging the battery enough for
running the watch for one day, starting from the state
that the second hand normally goes every second.
(Note) For using the watch for diving (one hour
diving a day), time required for charging must be
extended 1.5 times as long as the time appearing in
the table.
6. SPECIAL CARE FOR THIS SOLAR POWERED
WATCH
<Always take care to charge the battery of the
watch>
• Mind that the battery power is apt to decline if you
wear a jacket or a long sleeved shirt, because the
watch is usually shaded by such clothes and the
battery is insufficiently charged as a result.
• Try to put the watch in a well lit place, as far as
circumstances permit, when you take it off. If you
do, the watch will continue normal running.
CAUTION – Notes on charging
• Avoid charging in a hot place where the ambient
temperature is +60˚C/140˚F or more, because an
extreme rise in temperature may cause a
breakdown of the watch.
Examples: Charging near a hot light source such
as an incandescent lamp, halogen lamp, etc.
Charging in a place that can easily become hot
such as on a car dashboard, etc.
• When the watch is exposed to an incandescent
lamp for charging, carefully keep the watch 50 cm
(20 in.) or more apart from it so as not to get the
watch hot.
WARNING – Note on handling the secondary
battery
• The user should not remove the secondary battery
from the watch. If you remove the battery from the
watch for unavoidable reasons, be sure to keep it
outside the reach of a child to prevent him/her
from swallowing it.
• If a child swallows the secondary battery by
mistake, immediately consult a doctor for treatment.
WARNING – Use the specified secondary
battery only
• Never use any battery other than the specified
secondary battery. This watch is so designed that
it does not run with any battery other than the
specified secondary battery. However, if another
battery such as a mercury battery for example, is
forcibly set in the watch and it is charged, the
battery will not only be overcharged and burst, but
if worst comes to worst, it will result in damage to
the watch and injure the user and other people.
To repeat the warning, use the specified
secondary battery only without fail whenever the
secondary battery needs replacement.
7. SWITCHING BETWEEN MODES
• Each time button A is pressed for two seconds,
the mode is switched from the time mode to the
chronograph mode and vice versa.
• If the water sensor gets wet while the water is in
time mode, the mode is switched over to the
diving mode. However, this mode shift is not
performed when the function hand indicates “NG”
on the charge level index.
When the water sensor gets wet:
When Button A is pressed for 2
seconds as function hand indicates
“0 m” (0 ft) in depth, or function
hand continuously points at “0 m” (0
ft) in depth for 10 seconds after
depth measurement is complete:
8. ADJUSTING TIME AND DATE (Time Mode)
The watch shows time and date in the Time mode.
Besides time and date, the function hand indicates
the battery power at three different levels.
Time (shown by hour, minute, second and 24 hour
hands) and date can be checked any time
regardless of the mode.
Manner to adjust time
Time can be adjusted in the Time mode.
(1) After turning the crown counterclockwise to
unscrew it, pull the crown out to the time
adjustment position (the second click stop
position), the second hand will stop running.
(2) Set the watch for the correct time by turning the
crown.
(3) Press the crown in to the normal position and
the watch (second hand) starts running.
(4) Turn the crown clockwise to screw it tightly
against the case.
* When the crown is pulled to the time adjustment
position, the function hand points at the “0”
second position.
If the function hand does not point at the “0”
second position, correct the hand position
referring to “12. SETTING FUNCTION HAND AT
“0” POSITION”.
How to adjust date
(1) After turning the crown counterclockwise to
unscrew it, pull the crown out to the date
adjustment position (the first click stop position).
(2) Set the watch for the correct date by turning the
crown.
(3) Press the crown in to the normal position.
(4) Turn the crown clockwise to screw it tightly
against the case.
Note: If date is adjusted when the watch shows a
time between 9:00 pm and 1:00 am, the watch may
not advance the date indication the next morning.
<Note on operation of the crown>
The crown of this watch is designed to be screwed
down to secure the water-resistance of the watch.
• For pulling out the crown for adjustment, unscrew
it to get it loose first.
• After adjustment with the crown, press it in to the
normal position and then screw it down without fail.
• Do not operate any button while the crown is
being pulled out.
If a button is operated in such the status, it may
cause some change in the indication or disorder
of some hand(s).
• Do not pull out or turn the crown when the watch
gets wet or is in the water. Otherwise, the watch
may lose water-resistance and the inside of the
watch gets wet.
9. DIVING MODE
When the watch is immersed in the water, while it is
set in the Time mode and the battery is charged
enough for diving, the water sensor senses the
water and switches the watch to Diving mode to
measure the depth. In the Diving mode, the watch
automatically memorises the maximum depth of the
last dive and the user can recall it after the dive.
<Diving mode (Standby status)>
* If the function
hand and mode
hand don’t point to
their respectively
specified positions
(mode hand: “DV”
positions, function
hand: “0” position)
when the watch
enters the Diving mode (standby status), adjust the
hand positions referring to “11. MEASURES
AGAINST POSSIBLE PROBLEMS”.
<Depth indication>
Indication range: 0 to 50 m (0 to 125 ft) deep
(measured every second)
Indication unit: 1 m/5 ft (Decimals of five and above
in the first decimal place are rounded up and anything
under five in the first decimal place is rounded down.
Depth less than 1 m/5 ft is indicated as 0 m/0 ft.)
<Manner to read depth indication>
When the watch reaches the depth of 1 m/5 ft or
more in diving, it starts measuring the depth. In
diving, the indication by the function hand
represents the depth.
• When the depth is less than 1 m/5 ft, the function
hand indicates 0 m/0 ft.
• When the depth exceeds 50 m (125 ft), the function
and stops at the overzone mark (52-seconds position) to show that the depth is out of the indication
range. As the diver ascends in the water and the
depth is less than 50 m (125 ft), the watch again
indicates the depth.
<How to cancel the diving mode>
(1) Press button A for 2 seconds after diving or in
the water where it is less than 1 m (5 ft) deep
(depth indication: 0 m/0 ft). The diving mode is
cancelled and the watch returns to the Time
mode.
(2) When the watch is left for 10 minutes after diving
or in the water where it is less than 1 m (5 ft)
deep (depth indication: 0 m/0 ft), the watch
automatically returns to the time mode with
cancellation of diving mode. If the watch is again
immersed in water 1 m (5 ft) or more deep within
10 minutes after the last dive, the new dive is
regarded as a continuation of the last dive and
the watch continues to measure the depth.
* Wet detection error indication
If the diving standby mode (water sensor in
action) continues for 1 hour or more, the function
hand points at the overzone mark.
If the watch remains in this status for a long time,
refer to “11. MEASURES AGAINST POSSIBLE
PROBLEMS.”
>How to recall the memorised maximum depth>
(1) Press button B in the Time
mode or Diving mode (when
depth indication is 0 m/0 ft).
The function hand indicates the
memorised maximum depth.
(2) To cancel the maximum depth
indication, press button B again.
* Indication of the memorised
maximum depth continues for 30 seconds and is
automatically cancelled after that.
* The memory of the maximum depth of the last dive
is held until the watch is used in the next dive is
held until the watch is used in the next dive.
* If the maximum depth in diving is less than 1 m (5 ft),
it is not memorised. On the other hand, if the
maximum depth exceeds 50 m (125 ft), it is
memorised as an overzone depth.
* When the watch is used in diving for the first time,
it occasionally shows data stored during inspection
prior to shipment.
10. CHRONOGRAPH MODE
The chronograph function enables this watch to
measure time in units of 1 second for a maximum of
49 minutes 59 seconds. When it has reached 50
minutes, since a time measurement was started, the
chronograph stops measuring time and the hands
move to the reset position.
<Chronograph indication - Reset position ->
* If the watch is left in reset status in the chronograph
mode for 3 minutes, it automatically switches to
the Time mode.
<How to measure time>
(1) In the Time mode, press and hold button A for
2 seconds or more to switch the watch to
Chronograph mode. As a result, both the
function hand and mode hand quickly go to their
respective “0” positions and then stop.
(2) Each time button B is pressed, both the hands
start and stop alternately.
(3) If button A is pressed while both the hands are
stopped, the chronograph is switched to the
reset status.
A : Press the button A
B : Press the button B
12. SETTING FUNCTION HAND AT “0” POSITION
(1) Set the watch to the
Time mode or
Chronograph mode.
(2) Press button A or B to
set the function hand to
the “0” position.
(3) Press the crown into the
normal position and turn
it until it is tightly
screwed against the
case.
* The aforementioned procedure is effectual only
when the hand is located within 15 graduations
before/after the “0” point. When the hand is
located outside the adjustable range, correct the
“0” position of the hand referring to “13. ALL
RESET/ ADJUSTING HAND POSITION”.
* If the watch has been left without any operation
for 3 minutes or longer as the crown is pulled to
the second click stop position, the function hand
does not move regardless of button operation. If
the watch falls into such condition, press the
crown into the normal position and make a fresh
start to adjust the hand position.
* Before unscrewing and pulling out the crown,
make sure that the crown is not wet.
Automatic time correction function
If it takes 4 minutes or less to adjust the position
of the function hand in the Chronograph mode,
the watch automatically sets the hour, minute and
second hands for the correct time immediately
after the adjustment by the automatic time
correction function. Therefore, if adjustment is
finished within 4 minutes, the watch has no need
of manual time correction. However, if the crown
is turned during adjustment, the watch will not
indicate a correct time. adjustment is not
complete within 4 minutes, you will need to not
only adjust the “0” position of the second indicator
(function hand) in the Chronograph mode but also
to set the correct time.
13. ALL RESET/ADJUSTING HAND POSITION
(1) Unscrew the crown and
pull it out to the second
click stop position.
(2) Press button A or B
simultaneously. If the
function hand moves
slightly, the watch is
reset in whole
(3) Press button A or B to
set the function hand
and mode hand to their
respective “0” positions.
Button A : For adjustment counter clockwise
Button B : For adjustment clockwise.
* The function hand and the mode hand move
interlocking with each other.
(4) Correct the time indication by turning the crown.
(Refer to “8. ADJUSTING TIME AND DATE
(Time mode)”.)
(5) Press the crown into the normal position and
screw it down tightly against the case. As the
crown is pressed into the normal position, the
watch returns to the Time mode and starts
running.
* After the watch is reset, the function hand
points at “NG” position regardless of remaining
battery power. Approximately 1 hour after
resetting, the function hand will indicate the
charge level. (While the function hand is
indicating “NG”, the watch cannot be switched
to the Diving mode).
(5) * If the ALL RESET/ADJUSTING HAND
POSITION fails in clearing away the trouble,
consult with the store where you purchased the
watch or the nearest Citizen Service Centre
about the trouble.
Note that the maximum depth memorised during
the last dive is cleared simultaneously during ALL
RESET.
14. NOTE ON SECONDARY BATTERY
The secondary battery used in this watch is a clean
energy battery that incorporates no toxic
substances such as mercury inside. The secondary
battery has no need of periodical replacement
because it is capable of repeated charging and
discharging.
15. OTHER FUNCTIONS
[Rotating bezel]
The rotating bezel means the rotating ring set on
the rim of the watch case. An elapsed time can be
checked by this rotating bezel.
[How to use the rotating bezel]
On starting a dive, turn the rotating
bezel counterclockwise to set the
triangle mark (∆) to the position
where the minute hand is located.
After that, the minute hand serves
to indicate the elapsed time on the
rotating bezel.
(Example) In the figure on the
right, the minute hand indicates
that 10 minutes has passed since the dive was
started (since the ∆ mark was set at the starting
point).
CAUTION
• The rotating bezel can be turned counterclockwise
only, to avoid malfunction. Be careful not to turn
the rotating bezel clockwise by force, otherwise
the rotating bezel may be damaged.
• When using the rotating bezel, you are advised to
read its indication just as a guideline.
[No decompression limits]
The range within which the diver can rise to the
surface without rest for decompression is
determined by the depth and elapsed time of the
dive. The ranges are called “No Decompression
Limits”.
A table of “No Decompression Limits” compiled
according to the U.S. Navy Diving Manual (1993
edition) is printed on the watchband of this watch
(there are some models that have no print of the
table on the watchband).
CAUTION
• The table of no decompression limits is provided
for one-time diving.
• Since the no decompression limits differ
depending on divers physical condition and
difference among individuals, use this table as a
guideline only.
• In case of diving that requires the diver to take a
rest for decompression before rising to the
surface, perform diving following a manual
exclusively compiled for diving.
16. PROPER CARE FOR LONG TERM USE
WARNING - About water resistance • This watch is water-resistant against water
pressure at the depth of 200 m. Although the
watch can be used for scuba diving with an air
tank, it cannot be used for saturation diving using
helium gas.
Example: Read the table as follows.
In case the maximum diving depth is 21 m (70 ft)
and the elapsed time is 50 minutes or shorter, the
diver is not required to take a rest for
decompression when rising to the surface.
For maintaining the water resistance
For maintaining the water-resistance, ask the
nearest Citizen Service Centre directly or through
the store where you purchased the watch to inspect
the watch and to replace the packing, glass, crown,
etc. if needed once a year or every two years.
Example of use in wet
Indication
Dial
Case (Case back)
DIVER’S 200m
WATER
RESIST
(ANT)
Specifications
200m deepwater resistant
Water splashes on
Swimming, washing,
the watch (when
kitchen work
washing face, in rain)
OK
OK
Skin diving, marine
sports
Scuba diving with air
tank
Saturation diving
using helium gas
Operating the crown
or button when the
watch is wet
OK
OK
OK
OK
CAUTION
• Do not use this watch unless the crown is
screwed down into the normal position. Make sure
that the crown is tightly screwed down against the
case.
• When either the watch or your hand is wet, don’t
operate any button or the crown, except button B,
to prevent the watch from getting wet inside and
deteriorated in water-resistance.
• If the inside of the watch gets wet or the inside of
the glass gets fogged and the watch does not
recover from such a condition, immediately ask
the nearest Citizen Service Centre to overhaul it.
If the watch is left in such a condition, the inside
will get rusty.
• If seawater gets into the watch, put the watch in a
case or vinyl bag and immediately ask the nearest
Citizen Service Centre to overhaul it. If the watch
is left with seawater inside, there is danger that
the internal pressure of the watch will increase
and watch parts (glass, crown, buttons, etc.) will
be blown away by the pressure.
CAUTION – For repairing the watch
• This watch must be repaired by an authorised
Citizen Service Centre only.
CAUTION – Note on the luminous dial
• The luminous paint used for the dial of this watch
is mainly made from light accumulating materials,
which are harmless to the human body and the
environment since it contains no toxic substances
such as radioactive material.
This luminous paint accumulates light of the sun
and indoor lighting and emits light in a dark place.
(For example, if the luminous dial is exposed to
light of 500 lux or more for 10 minutes or longer, it
will emit light for 3 to 5 hours.)
However, its luminance gradually fades because it
discharges accumulated light. The duration that the
luminous paint emits light differs depending on the
illuminance and distance from the light source when
it accumulates light. If the luminous paint accumulates
insufficient light, it will not emit light in a dark place,
or even if it does emit light, its luminance rapidly
fades. Therefore, carefully expose the the luminous
dial to light so that the luminous paint accumulates
sufficient light especially before diving. It is
recommended that you use an underwater
flashlight to apply light to the watch during diving.
• The IC used in this quartz watch has a
characteristic that it can’t stand much static
electricity. If the watch is affected by static
electricity radiated from a TV set, etc., it may gain
or lose time.
• Be careful not to drop the watch on the floor, etc.
• Don’t use the watch in an environment where the
watch is exposed to chemicals or gases. If the
watch is cleaned using thinner, benzine or other
solvents (gasoline, nail-polish, creosol, bathroom
cleanser, adhesive, etc.), it may cause
discolouration, corrosion, dissolution or other
damage to the watch. If the watchband or case is
stained with mercury used in a clinical thermometer,
etc., the stained part may be discoloured. Pay
careful attention to chemicals when you are
wearing the watch near them.
CAUTION – Always keep the watch clean
• The case and the space between the skin and
watchband tend to get dirty and may get rusty.
This may cause corrosion of the metal, clothes
may be soiled by such dirt. To prevent this, try to
keep the watch clean at all times.
2. Model
B740/B745: Depth indication in meters
B741/B746: Depth indication in feet
<How to clean the watch>
• Wipe the case and glass with a soft dry cloth to
remove sweat and moisture from them.
• Wash the metal watchband, plastic watchband or
rubber watchband in water and remove dust and
soil accumulated in openings in the metal
watchband with a soft brush, etc.
• Don’t use thinner, benzine or other solvents for
cleaning since they may damage the watch.
CAUTION – Operating environment
• Be sure to use the watch under specified
temperatures described in this owners manual. If not,
it may stop or malfunction.
• Do not wear the watch in a hot place such as a
sauna, because the watch is easily heated in such
a place and you may burn your wrist and other
parts of your body.
• Do not leave the watch in extremely hot locations
such as the dashboard of a car. It may damage the
plastic parts and cause malfunction.
• Do not bring the watch close to a magnet or
magnetic material. If the watch is brought close to
a magnetic health appliance (magnetic necklace,
magnetic bellyband, etc.), the magnetic door of a
refrigerator, the magnetic latch of a bag, the
earphone of a cellular phone and so on, the watch
may fail in keeping good time. If the watch is out of
order for the said reason, keep the watch away from
such things and reset the watch to the correct time.
17. SPECIFICATIONS
1. Type
Solar powered analog watch with depth meter
function
3. Watch accuracy
±15 seconds per month (Average)
[at normal temperatures (+5°C to +35°C/+41°F to
+95°F)]
4. Depth gauge accuracy
At depth of 1 to 10 m (5.0 to 25 ft): within ±1 m
(±5.0 ft)
At depth of 1 to 50 m (27.5 to 125 ft): within ±2 m
(±7.5 ft)
(On the condition that the water temperature is
constant and error in reading is included.)
* Temperature range for guaranteed accuracy:
+10°C to +40°C (+50°F to +104°F)
Depth gauge accuracy is influenced by changes in
surrounding temperature.
5. Range or watch operating temperature
–10°C to +60°C (+14°F to +140°F)
6. Indications
• Time: Hour, minute, second, 24-hour, Charge
level
• Date
• Chronograph: Minute, second (50-minute
chronograph, reading in units of 1 second)
• Depth gauge: 1 m to 50 m (5 ft to 125 ft)
Reading in units of 1 m (2.5 ft)
Depth less than 1 m (5 ft) is indicated as 0 m (0 ft)
Depth more than 50 m (125 ft) is indicated as
overzone.
• Maximum depth to be memorised: 1 m to 50 m
(5 ft to 125 ft)
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