Citizen F50 User manual

32
1. Features
This watch is an analog quartz watch equipped with features including a 24 hour
display and chronograph function.
8
Hour hand
Chronograph
minute hand
Second hand
Date
Button (B) 24 hour hand
Crown
Minute hand
Button (A)
Chronograph second hand
2. Displays and Buttons
* The design varies depending on the model.
English
CONTENTS
1. Features ........................................................................................................... 3
2. Displays and Buttons ...................................................................................... 3
3. Setting the Time .............................................................................................. 4
4. Setting the Date ............................................................................................... 6
5. Using the Chronograph .................................................................................. 8
6. Zero Positioning of Chronograph Hands (After Replacing the Battery) ................ 10
7. Precautions .................................................................................................... 12
8. Specifications ................................................................................................ 19

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1. Pull the crown out to the time correction position when the second hand has
reached the 0 seconds position.
2. Turn the crown to set the time.
* The 24 hour hand moves in conjunction with the hour hand. Pay attention to
AM and PM when setting the time.
3. Securely return the crown to the normal position in synchronization with a tele-
phone or other time service.
[Hint for Accurately Setting the Time]
After stopping the second hand at the 0 seconds position, turn the minute hand 4-5
minutes past the correct time and then turn it back to the correct time. The time on
the watch can then be set to the correct time by pushing in the crown in synchroni-
zation with a time service tone.
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3. Setting the Time
In the case the crown is of the screw-lock type, loosen the screw by turning the
crown to the left before operating the crown, and after having returned the crown
to the normal position following operation, turn the crown to the right while push-
ing it in to securely retighten it.
Minute hand
Hour hand
Second hand Time correction position

76
1. Pull the crown out to the date correction position.
2. Turn the crown to the right to set the date.
* The crown turns freely and the date does not change if the crown is turned to
the left.
* If the date is set while the time on the watch is between the hours of about 9:00
PM and 1:00 AM, the date may not change on the following day. If this
happens, set the date after temporarily moving the hands to a time other than
between the above times.
* The date is based on a 31-day calendar. The date must be changed from the
last day of the month to the first day of the following month for those months
not having 31 days (months having 30 days and February).
3. Once the date has finished being set, return the crown to the normal position.
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4. Setting the Date
Date correction position
Date

98
(A) (A)
(B) (B)
Reset Time
Measurement Stop
[Chronograph Timing]
1. Start timing by pressing button (A).
* The chronograph is repeatedly started and stopped by pressing button (A).
2. Pressing button (B) resets the chronograph to 0 seconds.
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5. Using the Chronograph
The chronograph function of this watch is able to measure and display elapsed
time up to 59 minutes 59 seconds in 1 second units. After the chronograph dis-
plays elapsed time for 59 minutes 59 seconds, it resumes timing from 0 seconds.
The chronograph minute hand continues to move until the chronograph is stopped
by pressing button (A) even after 59 minutes 59 seconds have elapsed.
Chronograph
second hand
Chronograph
minute hand Button (A)
Button (B)

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[Chronograph Hand Zero Positioning]
1. Pull the crown out to the time correction position.
2. Press button (A) to position the chronograph second at the 0 position.
* The chronograph second hand can be advanced rapidly by depressing button
(A) continuously.
3. Once the chronograph second hand has been positioned at the 0 position, reset
the time and return the crown to the normal position.
4. Press button (B) to check that each of the chronograph hands has been reset to
the 0 position.
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(After Replacing the Battery)
6. Zero Positioning of Chronograph Hands
Chronograph second hand
Chronograph minute hand
Button (A)
Time correction
position
Button (B)
When resetting the chronograph after replacing the battery, if the chronograph
second hand does not return to the 0 seconds position or if the chronograph second
hand has shifted out of position due to a strong impact, perform zero positioning of
the chronograph hands according to the procedure described below.

1312
Examples of use
Moderate exposure
to water (washing,
kitchen work,
swimming, etc.)
Marine sports
(skin diving)
Scuba diving
(with air tank)
Operation of the
crown or button with
moisture visible
OK
NO
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.
OK
NO NO
OK
NO
NO NO
NO
NO
NO
Minor exposure to
water (washing face,
rain, etc.)
OK
7. Precautions
There are several types of water-resistant
watches, as shown in the following table.
The unit "bar" is roughly equal to 1 atmosphere.
* WATER RESIST(ANT) xx bar may also be
indicated as W.R. xx bar.
CAUTION: Water-resistance performance
Indication
Dial Case (Case back) Specification
WATER RESIST
or no indication
WR 50 or WATER
RESIST 50
WR 100/200 or
WATER RESIST
100/200
WATER
RESIST(ANT)
WATER
RESIST(ANT) 5 bar or
WATER RESIST(ANT)
WATER RESIST(ANT)
10bar/20 bar or
WATER RESIST(ANT)
Water-resistant to
3 atmospheres
Water-resistant to
5 atmospheres
Water-resistant to
10 / 20 atmospheres
OK
OK

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• If seawater enters the watch, place the watch in a box or plastic bag and immedi-
ately take it in for repair. Otherwise, pressure inside the watch will increase, and
parts (crystal, crown, buttons, etc.) may come off.
CAUTION: Keep your watch clean.
• Leaving dust and dirt deposited between the case and crown may result in diffi-
culty 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.
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.
• Water-resistance for daily use (to 3 atmospheres): This type of watch is water-
resistant 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.
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 or button 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.

1716
• 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.
• 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 refrigera-
tor door or handbag clasp or the earphone of a mobile phone. If this has oc-
curred, move the watch away from the magnet and reset the time.
• Do NOT place the watch close to household appliances that generate static elec-
tricity.
Timekeeping may become inaccurate if the watch is exposed to strong static elec-
tricity, 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.
WARNING: Handling of the battery
• Keep the battery out of the reach of small children. If a child swallows the bat-
tery, contact a physician immediately.
CAUTION: Replacing the battery
• For replacement of the battery, take your watch to your dealer or Citizen Service
Center.
• Replace the battery as soon as possible if the service life of the battery has ex-
pired. Leaving a depleted battery in the watch may result in leakage, which can
damage the watch severely.
CAUTION: Operating environment
• Use the watch within the operating-temperature range specified in the instruc-
tion manual.
Using the watch where temperatures are outside the specified range, may result
in deterioration of functions or even stoppage of the watch.

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8. Specifications
1. Caliber. No: F50*
2. Type: Analog quartz watch
3. Timekeeping accuracy: Within ±20 seconds per month on average (when
worn at normal temperatures of +5°C to +35°C /
41°F to 95°F)
4. Crystal oscillator: 32,768 Hz
5. Operating temperature range: –10°C to +60°C /14°F to 140°F
6. Display functions:
* Time: 24 hours, hours, minutes, seconds
* Calendar: Date
* Chronograph: Measurement and display up to 59 minutes 59 seconds in
1 second units
7. Battery: Miniature silver battery, 1
Battery part no.: 280–39 (SR626SW)
Battery life: Approx. 2 years (when using the chronograph for 1 hour/day)
* Specifications are subject to change without notice.
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.
Periodical inspections
Your watch needs inspection once in every two or three years for safety and long
use.
To keep your watch water-resistant, the packing needs to be replaced regularly.
Other parts need to be inspected and replaced if necessary.
Ask for Citizen geuine parts upon replacement.