Citizen | F910 | Specifications | Citizen F910 Specifications

Citizen F910 Specifications
Please Make Sure to Fully Charge the Watch Before Use
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English
English
Check to make sure that the second hand of the watch is moving in 1-second
intervals when worn on the wrist.
If it is moving in 2-second intervals, this means that the watch is not sufficiently charged.
Charge the watch by wearing the watch so that the back of the watch is in
direct contact with your wrist at all times until the second hand returns to 1second interval movement. This watch is provided with an overcharging prevention function that eliminates any worries that the watch may be overcharged
no matter how long it is charged.
When the second hand is moving in 2-second hitch movement, this indicates
that the watch has stopped running as a result of being insufficiently charged.
When this happens, fully charge the watch and reset the time before further
use.
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CONTENTS
1.
2.
Main Features ................................................................................. 3
For Proper Power Generation ......................................................... 4
• Power Generation Mechanism
• Distinguishing Between Power Generating and Non-Power
Generating Modes
• General Reference for Charging Times
• Hints for Effective Power Generation
• Precautions During Power Generation
• Don’t Open the Back Cover of the Watch Unnecessarily
3.
Setting the Time and Calendar ....................................................... 8
• Setting the Time
• Setting the Calendar
4.
5.
Characteristic Functions ................................................................ 12
Warning Functions ........................................................................ 14
• Insufficient Recharging Warning Function
• Time Setting Warning Function
6.
Secondary Battery ......................................................................... 16
• Handling of the Secondary Battery
• Only Use the Specified Battery
• When Not Using for a Long Period of Time
2
7.
8.
Precautions ................................................................................... 17
Specifications ................................................................................ 23
1. Main Features
This watch is an analog quartz watch equipped with a thermoelectric generation
function that drives the watch by converting body heat (heat energy), produced
when wearing the watch on the wrist, into electrical energy.
Power is generated when the watch is worn on the wrist and the second hand is
moving at 1-second intervals. When the watch is removed from the wrist, the
second hand moves at 10-second intervals, indicating that power is not being
generated.
When fully charged, the watch will run continuously for about six months without
charging. To fully charge the watch after it has stopped due to insufficient charge
requires about 15 days (continuous charging). To ensure optimal usefulness,
make sure that the watch is always sufficiently charged.
This watch uses a secondary battery for storing the electrical energy that is
generated. This secondary battery is completely free of mercury or other hazardous substances. It does not have to be replaced periodically in the manner of
conventional watch batteries since it is able to be charged and discharged repeatedly.
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2. For Proper Power Generation
[Power Generation Mechanism]
When this watch is worn on the wrist, body
heat from contact with the skin will heat
up the back cover of the watch. This heat
will be released into the air from the surface of the watch, and the temperature difference between the back cover and the
watch surface will drive a thermoelectric
generation device that generates electric
energy. Power generation performance
varies considerably depending on air temperature, individual differences in body
temperature and the manner in which the watch is worn. The standard usage
environment of this watch is defined as wearing the watch so that the back over
is in direct contact with the wrist at an air temperature of about 25˚C (77˚F) and
body temperature (surface temperature on the wrist) of 32˚C (89.6˚F).
Power generation performance increases as the temperature difference between
the back over and watch surface becomes larger, and decreases as the temperature difference becomes smaller. Power is no longer generated when the
Eco
4
-Do
rive
The
rmo
surface temperature of the watch and the temperature of the back cover are
equal or when the surface temperature exceeds that of the back cover. The watch
is unable to generate sufficient power if the surface of the watch is covered with
clothing or other objects. It is recommended to wear the watch so as to release
the heat of the watch surface as much as possible.
[Distinguishing Between Power Generating and Non-Power Generating
Modes]
When power generation has stopped as a result of removing the watch from the
wrist, the second hand moves at 10-second intervals indicating that power is not
being generated. When power generation is resumed by putting the watch on
your wrist or warming the back cover with your fingers, the second hand returns
to 1-second interval movement.
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[General Reference for Charging Times]
Wear the watch on the wrist for at least 5 hours per day to ensure one day’s
worth of charging at the time of 1-second interval movement. If the watch stops
due to insufficient charge, full charge using the 1-second interval movement will
take about 50 days provided that the watch is worn for 8 hours per day. However,
make sure to attach the watch to the wrist in the correct manner, as the way the
watch is attached will greatly affect the time required for charging. It is recommended to wear the watch daily to store an ample amount of electrical energy
and increase the amount of charge retained by the watch.
[Hints for Effective Power Generation]
• Wear the watch so that the back cover is firmly against your wrist.
• Wear the watch so that heat is released from the watch surface.
• Do not allow the watch to be covered up with clothing (sleeves, gloves, winter
gear, etc.).
• Try to wear the watch for long periods of time.
• Allowing air to blow over the upper surface of the watch while wearing it to
lower the surface temperature makes it easier for the watch to generate power.
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CAUTION
[Precautions During Power Generation]
Warming the entire watch dissipates the temperature difference between the
back cover and watch surface, thereby preventing power from being generated.
• Do not warm the surface of the watch by touching with your hand.
• Do not warm the watch with a heating or cooking appliance.
• Do not attempt to warm the watch with an open flame from a gas range, lighter
or other heating device.
• Do not attempt to warm the watch with hot air from a hair dryer or other appliance.
• Do not warm the watch surface with direct sunlight.
• Leaving the watch in locations of high temperature may cause deterioration of
the thermoelectric generation function.
• Do not leave the watch where it becomes high temperature [60˚C (140˚F) or
higher] like on an automobile dashboard.
CAUTION
[Don’t Open the Back Cover of the Watch Unnecessarily]
Never open the back cover of the watch. This may prevent the watch from charging, cause it to stop running or result in defective water resistance.
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3. Setting the Time and Calendar
If the watch has stopped running due to insufficient charging or the second hand
is moving at 2-second intervals when setting the time, first return the watch to 1second interval movement before setting the time by charging with reference to
the section entitled, “For Proper Power Generation”. If the crown is a screw lock
type, the screw should be loosened before the operation. Make sure to tighten
the screw again after the settings are made.
[Setting the Time]
<When the second hand is moving at
1-second intervals (generating electric power display) / 2-second intervals (insufficient recharging warning
display) / 2-second hitch movement
(time setting warning display)>
1. Pull the crown twice to the time correction position when the second
hand reaches the 0 seconds position.
2. Turn the crown to set the time.
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Normal position
Crown
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• The date changes at AM 0. Make sure not to mistake AM for PM and vice
versa when setting the time.
• The date indication starts changing from around 9 PM and is completed
around 1 AM.
• A more precise setting of the time can be accomplished by advancing the
minute hand 4 to 5 minutes from the correct time and then moving it back to
the correct setting.
3. Return the crown to its normal position in synchronization with the telephone
time tone. The second hand will start to move and the watch will start ticking
away from the correct time.
<When the second hand is moving at 10-second intervals (indicating that
power is not being generated)>
1. Pull the crown twice to the time correcton position when the second hand
reaches the 0 seconds position.
2. Turn the crown to set the time.
3. Return the crown to its original position in synchronization with the telephone
time tone. The second hand will start to move and the watch will start ticking
away from the correct time.
Time correction position
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Caution
<If the stop position of the second hand shifts, and it does not stop at the
0 seconds position>
If the crown is pulled out to the time correction position when the second hand is
at another position than the 0-second, 10-second, 20-second, 30-second, 40second or 50-second position, or if the second hand does not stop at the 10second interval movement stop positions due to the influence of static electricity
or physical impacts, perform the following procedure to set the correct time again.
1. Pull the crown twice to the time correction position when the second hand is
between 51 and 59 seconds.
2. Push the crown in a normal position. The second hand moves at 1-second
intervals for 10 seconds only.
• In the 10-second interval movement condition (non-power generating condition) only, 1-second interval movement will take place for 10 seconds after
the crown is pressed in.
3. Pull the crown twice again to the time correction position when the second
hand reaches the 0 seconds position.
• Refer to <When the second hand is moving at 1-second intervals (generating electric power display) / 2-second intervals (insufficient recharging warning
display) / 2-second hitch movement (time setting warning display)>, and
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reset the time.
<Setting the Calendar>
1. Pull the crown once to the calendar correction position.
2. While turning the crown to the left, match with the date of the day.
• Idle motion will result if the crown is turned to the right.
• If the date is adjusted while the time indication is between 9 PM and 1 AM,
the date may not change even on the following day.
• This watch employs a 31-day dating system. For months with only 30 days
and February, the crown must be operated to correct the date on the first of
the following month.
3. Return the crown to the normal position.
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4. Characteristic Functions
The display of this watch changes following the activation of the warning functions described below when the watch is insufficiently charged.
[Insufficient Recharging
Warning Display]
[Normal Time Display]
1-second interval movement or
10-second interval movement
[Time Setting Warning Function]
If insufficient charging further continues
When charging becomes
insufficient
7
7
When the watch is
charged
2-second interval movement
12
When the time is set when the watch is fully charged
7
When the time is set
while charging is still
insufficient
Stop
When the watch is charged by
wearing on the wrist, the watch
hands begin to move.
2-second hitch movement
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5. Warning Functions
The display of this watch changes when the warning functions described below
are activated as a result of the watch being insufficiently charged. The watch
does not change to 10-second interval movement even if power is not generated
while any of these functions are activated.
[Insufficient Recharging Warning Function]
When the second hand is moving at 2-second intervals (moves two gradations
at a time every 2 seconds), this indicates that the watch is insufficiently charged.
Although the watch continues to run normally at
this time, if roughly 11 days elapse after 2-second
interval movement has begun, the watch stops running. When this happens, charge the watch by
wearing it on your wrist until it returns to normal 1second interval movement.
If charging is discontinued soon after the watch
returns to 1-second interval movement, it will again
return to 2-second interval movement several min2-second interval movement
utes later.
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[Time Setting Warning Function]
Although the watch hands begin to move when the watch has been recharged
after it has stopped as a result of being insufficiently charged, since the time is
incorrect, the second hand moves in a 2-second
hitch movement (moves irregularly once every 2
seconds) indicating that the time is incorrect.
When this happens, charge the watch by wearing
it on your wrist after resetting it to the correct time.
When the time is set, 2-second hitch movement is
canceled, and the watch returns to the normal time
display or the insufficient recharging warning function. In the case of 2-second hitch movement,
2-second hitch movement
change the watch until it returns to 1-second interval movements.
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6. Secondary Battery
WARNING Handling of the Secondary Battery
current consumption and extend the duration of watch usage without charging.
When using the watch after storing, make sure to first reset the time after fully
charging and returning to 1-second interval movement.
Never attempt to remove the secondary battery from the watch. When the secondary battery must unavoidably be removed, store in a location out of the reach
of small children to prevent accidental swallowing. If the secondary battery should
happen to be swallowed, please consult a physician immediately and seek medical assistance.
7. Precautions
CAUTION Water-Resistance Performance
WARNING Only Use the Specified Battery
Never use a battery other than the secondary battery specified for use in this
watch. Although the watch is constructed so as not to operate when a different
type of battery is installed in the watch, if another type of battery such as a silver
battery is forcibly used and the watch should happen to be charged using that
battery, there is the risk of the battery rupturing resulting in damage to the watch
and personal injury. Always make sure to only use the specified battery when
replacing the secondary battery of this watch.
[When Not Using for a Long Period of Time]
It is recommended to store the watch with the crown pulled out to the time cor16 rection position to save on electrical power. This makes it possible to suppress
There are several types of water-resistant watches, as shown in the following
table. For correct use within the design limits of the watch, confirm the level of
water-resistance of your watch, as indicated on the dial and case, and consult
the table.
• Water-resistance for daily use (to 3 atmospheres): This type of watch is waterresistant to minor exposure to water. For example, you may wear the watch
while washing your face; however, it is not designed for use underwater.
• Upgraded water-resistance for daily use (to 5 atmospheres): This type of watch
is water-resistant to moderate exposure to water. You may wear the watch while
swimming; however, it is not designed for use while skin diving.
• Upgraded water-resistance for daily use (to 10/20 atmospheres): This type of
watch may be used for skin diving; however, it is not designed for scuba or
saturated diving using helium gas.
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Examples of Use
(The unit “bar” is roughly equal to 1 atmosphere.)
Indication
Minor exposure to water
(washing face, rain, etc.)
Moderate exposure to Marine sports (skin
water (washing, kitchen diving)
work, swimming, etc.)
Scuba diving (with air Operation of the
tank)
crown with moisture
visible
Dial
Case (caseback)
WATER RESIST
or no indication
WATER
RESIST(ANT)
Waterresistant to 3
atmospheres
OK
NO
NO
NO
NO
WR 50 or
WATER RESIST 50
WATER RESIST(ANT)
5 bar or
WATER RESIST (ANT)
Waterresistant to 5
atmospheres
OK
OK
NO
NO
NO
WATER RESIST(ANT) Water-resistant
10/20 bar or
to 10/20
WATER RESIST (ANT) atmospheres
OK
OK
OK
NO
NO
WR 100/200 or
WATER RESIST
100/200
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Specification
* WATER RESIST(ANT) xx bar may also be indicated as W.R. xx bar.
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CAUTION
• Be sure to use the watch with the crown pressed in (normal position). If your
watch has a screw-type crown, be sure to tighten the crown completely.
• Do NOT operate the crown with wet fingers or when the watch is wet. Water
may enter the watch and compromise water-resistance.
• If the watch is used in seawater, rinse with fresh water afterward and wipe with
a dry cloth.
• If moisture has entered the watch, or if the inside of the crystal is fogged up
and does not become clear within a day, immediately take the watch to your
dealer or Citizen Service Center for repair. Leaving the watch in such a state
will allow corrosion to form inside.
• If seawater enters the watch, place the watch in a box or plastic bag and immediately take it in for repair. Otherwise, pressure inside the watch will increase,
and parts (crystal, crown, etc.) may come off.
CAUTION Keep Your Watch Clean
• Leaving dust and dirt deposited between the case and crown may result in
difficulty in pulling the crown out. Rotate the crown while in its normal position,
from time to time, to loosen dust and dirt and then brush it off.
• Dust and dirt tend to be deposited in gaps in the back of the case or band.
Deposited dust and dirt may cause corrosion and soil your clothing. Clean the
watch occasionally.
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Cleaning the Watch
• Use a soft cloth to wipe off dirt, perspiration and water from the case and
crystal.
• Use a soft, dry cloth to wipe off perspiration and dirt from the leather band.
• To clean a metal, plastic, or rubber watchband, wash away dirt with mild soap
and water. Use a soft brush to remove dust and dirt jammed in the gaps in the
metal band. If your watch is not water-resistant, take it to your dealer.
NOTE: Avoid using solvents (thinner, benzine, etc.), as they may mar the finish.
CAUTION
Operating Environment
• Use the watch within the operating-temperature range specified in the instruction manual.
Using the watch where temperatures are outside the specified range, may result in deterioration of functions or even stoppage of the watch.
• Do NOT use the watch in places where it is exposed to high temperature, such
as in a sauna.
Doing so may result in a skin burn.
• Do NOT leave the watch in a place where it is exposed to high temperature,
such as the glove compartment or dash-board of a car.
Doing so may result in deterioration of the watch, such as deformation of plastic parts.
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• Do NOT place the watch close to a magnet.
Timekeeping will become inaccurate if you place the watch close to magnetic
health equipment such as a magnetic necklace or a magnetic latch of a refrigerator door or handbag clasp or the earphone of a mobile phone. If this has
occurred, move the watch away from the magnet and reset the time.
• Do NOT place the watch close to household appliances that generate static
electricity.
Timekeeping may become inaccurate if the watch is exposed to strong static
electricity, such as is emitted from a TV screen.
• Do NOT subject the watch to a strong shock such as dropping it onto a hard
floor.
• Avoid using the watch in an environment where it may be exposed to chemicals or corrosive gases.
If solvents, such as thinner and benzine, or substances containing such solvents come in contact with the watch, discoloration, melting, cracking, etc. may
result. If the watch comes in contact with mercury used in thermometers, the
case, band or other parts may become discolored.
8. Specifications
1. Caliber No.: F910
2. Type: Thermoelectric power generation quartz watch
3. Accuracy: Within ±15 seconds per month on average
(When worn at normal temperatures of +5˚C to +35˚C/41˚F to 95˚F)
4. Operating Temperature Range : -10˚C to +60˚C/14˚F to 140˚F
5. Display Functions: Time (Hours, Minutes, Seconds)
Calendar
6. Additional Functions:
• Thermoelectric Generation Function
• Insufficient Recharging Warning Function
• Time Setting Warning Function
• Overcharging Prevention Function
7. Continuous Operating Time:
• Fully charged to stopping: Approx. 6 months
• 2-second interval movement to stopping: Approx. 11 days
8. Battery Used: Secondary battery, 1pc.
* Specifications are subject to change without notice.
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