Citizen Eco-Drive b740 User manual

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When reading this instruction manual please keep the watch diagram at
left folded out and in view.
• Refer to “3. NAME OF PARTS” (p.18) for the symbols on the diagram.
• The design may differ according to the model.
Pendant la lecture de ce mode d'emploi, dépliez le dessin de la montre à
gauche de manière à pouvoir vous y référer.
• Pour les symboles du dessin de la montre, reportez-vous à “3. NOMEN-
CLATURE DES ORGANES” (p. 83).
• Le design de la montre peut varier selon le modèle.
Cuando lea este manual de instrucciones por favor tenga el esquema del
reloj de la izquierda desplegado y a la vista.
• Diríjase a “3. DENOMINACION DE LAS PARTES” (pág. 156) para los
símbolos que aparecen en el esquema.
• El diseño puede variar según el modelo.
Beim Lesen dieser Bedienungsanleitung beziehen Sie sich bitte auf die
Abbildung im linken Faltblatt.
• Für die in der Abbildung verwendeten Symbole sich auf das Kapitel “3.
BEZEICHNUNG DER TEILE” (S. 226) beziehen.
• Das Design kann je nach Modell verschieden sein.
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b

Before using
When the watch does not operate according to the
instruction manual, it is insufficiently charged.
Charge the secondary battery of the watch for more than
4 hours, approximately 20cm (8in.) away from the
fluorescent or incandescent lamp (30W) as light sources.
When charging the secondary battery, do not put it too
close to the light source.
* When charging the watch under direct rays of the sun,
charge for more than an hour.
IMPORTANT

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 into 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 memorized. (Maximum depth
memorizing function)
•The chronograph function measures the time in units of one second for 50
minutes at maximum.
32
Any repair of this product should be conducted at a Citizen Service
Center. For repair and inspection please contact the place of purchase or
contact a Citizen Service Center directly.
English

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.
■The instructions for safe operation are classified using the following symbols.
(The following are just examples of symbols.)
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.
5
•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.
WARNING Can cause serious injury or death.
CAUTION Can or will cause minor or moderate injury or damage.
4
CAUTION

•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.
7
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.
•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).
6
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

8 9
CONTENTS
WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1. BEFORE USING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2. BEFORE USING FOR DIVING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3. NAMES OF PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4. WARNING FUNCTIONS OF THIS SOLAR POWERED WATCH . . . . . .20
5. TIME REQUIRED FOR CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
6. SPECIAL CARE FOR THIS SOLAR POWERED WATCH . . . . . . . . . . .30
7. SWITCHING BETWEEN MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
8. ADJUSTING TIME AND DATE (Time mode) . . . . . . . . . . . . . . . . . . . . .34
9. DIVING MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
10. CHRONOGRAPH MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
11. MEASURES AGAINST POSSIBLE PROBLEMS . . . . . . . . . . . . . . . . . .44
12. SETTING FUNCTION HAND AT “0” POSITION . . . . . . . . . . . . . . . . . . .48
13. ALL RESET/ADJUSTING HAND POSITION . . . . . . . . . . . . . . . . . . . . . .50
14. NOTE ON SECONDARY BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
15. OTHER FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
16. PROPER CARE FOR LONG TERM USE . . . . . . . . . . . . . . . . . . . . . . . .56
17. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

1. BEFORE USING
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 everyday.
To insure 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 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.
11
This instruction manual gives explanations of the model that indicates the depth
in the metric system (m: meter) by way of example.
If your watch is a different model that indicates the depth in the foot system (ft:
foot), refer to the footage appearing together with the metric number
corresponding to it.
10
“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.

CAUTION For safe diving
•When diving, obey the rules of the buddy system*1every time.
•For safety, it is advised that you enjoy sports diving in the depths around
20 m (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 a 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.
13
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.
12

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 the 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. 15
PROHIBITION Circumstances that prohibit use of this watch in diving
Don’t use this watch 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 behavior 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.
14

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 of the watch.
Example: 20 m (65 ft) (indicated depth)×1.025 = 20.5 m (67 ft) (real depth)
17
<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
memorized 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 Center about the trouble.
16
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 (13,120 ft) or more above sea level for the reason that the watch gives
incorrect measurement of depth in such a place as mentioned previously.

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 meters
(125 feet) 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.
19
3. NAMES OF PARTS
Collate the following table with the watch diagram on the first page.
18
Name Time mode Diving mode Chronograph mode
A: Button ATo be pressed for selecting a mode
B: Button BTo be pressed for showing the 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 synchronized with the hour hand.
7:Calendar Always indicates the date.
8:Crown To be used for adjusting the time or date.

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When the battery is sufficiently charged and the time is correctly set:
Function hand: Points at
LV.2, LV.1 or NG. Function hand: Points at NG.
[Time reset warning indication]
Function hand: Points at “0”.
[Stop warning indication]
Function hand: Points at “0”.
Mode hand: Points at “0”.
[Insufficient charge warning indication]
2 second interval
movement
1 second
interval
movement
As the battery is
recharged:
Irregular 2
second interval
movement
As the battery
power declines
furthermore:
[Normal indication (Time mode)]
As the battery power
declines:
As the battery is
recharged:
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.

2322
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
position)>
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 shift 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
won't be activated.
If the function hand points to “NG” during a dive, immediately
stop using relying on the watch for depth measurement.

2524
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 the
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 the chronograph mode.
* While the watch is falling into the 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. For
using the watch for diving, sufficiently charge the battery until the function
hand indicates “LV.1” or “LV.2” on the charge level.
2 second
interval
movement
2 seconds
2 seconds

27
Time reset warning function
Time reset warning indication
— Mode hand: “0” position,Function hand: “0” 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)
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.
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.
26
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When the battery is charged in this condition, the watch restarts operation
as it is switched to the time reset warning indication.
Irregular 2
second interval
movement
2 seconds
2 seconds
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.

5. TIME REQUIRED FOR CHARGING
Since time required for recharging the battery varies according to model
(depending on the dial color, etc.), refer to the following table as a rough
guideline for charging the battery.
2928
Illumi-
nance
(lux) Environment
Time required for charging
Charging time
required to make the
second hand move
normally from the
watch stop status.
Charging
time for
one-day
operation
Charging
time required
for fully
charging
* Each time required for charging means a duration in which the watch is
continuously exposed to the light indicated.
Charging 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.
500 Under indoor lighting 2 hrs 16 hrs 134 hrs
1,000 60-70 cm (24-28 in.) under 50 min 6 hrs 30 min 57 hrs
a fluorescent lamp (30 W)
3,000 20 cm (8 in.) under 16 min 2 hrs 30 min 18 hrs
a fluorescent lamp (30 W)
10,000 Cloudy outdoor 4 min 1 hr 5 hrs
100,000
Under bright sunlight in summer 2 min 45 min 2 hrs 30 min

3130
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-lighted 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 easily becomes 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 resultingly
damage 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.

3332
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(Indication in
standby status) (Depth indication)
When watch is at a
depth of 1 m (5 ft)
or more:
When watch is
at a depth of
less than 1 m
(5 ft):
<Chronograph mode> <Time mode>
Press button A
continuously for
2 seconds.
When the water
Function hand: “0” position
Mode hand: “0” position Function hand: “Charge level index” position
Mode hand: “DV” position
Function hand: “0” position
Mode hand: “DV” position Function hand: Depth indication
Mode hand: “DV” position
7. SWITCHING BETWEEN MODES
•Each time button Ais pressed for two seconds, the mode is switched from
the time mode to the chronograph mode and vice versa. <Diving mode>
A
•If the water sensor gets wet while the watch 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.
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
levels.
Time (shown by hour, minute, second and 24-hour hands) and date can be
checked any time regardless of the mode.
3534 Date
Minute hand
Hour hand
24-hour hand
Second hand
Crown
Normal position
Function hand (Charge
level index) Mode hand: DV position
Time adjustment position
Date adjustment position
0
m
3
0
4
0
2
0
3
6
9
1
2
1
5
5
0
L
V
.
2
L
V
.
1
N
G
50 10
30
60
30
1545
20
40
24
12
16
20
8
4
D
V
7
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.

3736
<Diving mode (Standby status)>
When the
crown is
unscrewed
(loosened).
When the
crown is
screwed
down
(fastened). Date
Minute
hand
B
A
Hour hand
24-hour
hand
Second
hand
* If the function hand and
mode hand don’t point to
their respectively specified
positions (mode hand: “DV”
position, function hand: “0”
position) when the watch
enters the Diving mode
(standby status), adjust the
hand positions referring to
“11. MEASURES AGAINST
POSSIBLE PROBLEMS”.
Function hand:
“0” position
0
m
3
0
4
0
2
0
3
6
9
1
2
1
5
5
0
L
V
.
2
L
V
.
1
N
G
50 10
30
60
30
1545
20
40
24
12
16
20
8
4
D
V
7
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 memorizes the maximum depth of the last dive and the
user can recall it after the dive.
Mode hand: “DV”
position
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 loses water-resistance and the inside of the watch gets
wet.