Casio 5446 User manual

MO1503-EA © 2015 CASIO COMPUTER CO., LTD.
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ENGLISH
Congratulations upon your selection of this CASIO watch.
Warning!
•The measurement functions built into this watch are not intended for taking measurements that
require professional or industrial precision. Values produced by this watch should be considered
as reasonable representations only.
•Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss
suffered by you or any third party arising through the use of this product or its malfunction.
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About This Manual
•Depending on the model of your watch, display text appears either as
dark figures on a light background, or light figures on a dark
background. All examples in this manual are shown using dark figures
on a light background.
•Button operations are indicated using the letters shown in the
illustration.
•Note that the product illustrations in this manual are intended for
reference only, and so the actual product may appear somewhat
different than depicted by an illustration.
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Things to check before using the watch
1. Check the Home City and the daylight saving time (DST) setting.
Use the procedure under “To configure Home City settings” (page E-15) to configure your Home City and
daylight saving time settings.
Important!
Proper World Time Mode data depends on correct Home City, time, and date settings in the Timekeeping
Mode. Make sure you configure these settings correctly.
2. Set the current time.
See “Configuring Current Time and Date Settings” (page E-17).
The watch is now ready for use.
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Contents
About This Manual …………………………………………………………………………………………… E-2
Things to check before using the watch ………………………………………………………………… E-3
Mode Reference Guide ……………………………………………………………………………………… E-7
Timekeeping ………………………………………………………………………………………………… E-13
Configuring Home City Settings ………………………………………………………………………… E-15
To configure Home City settings …………………………………………………………………… E-15
To change the daylight saving time (summer time) setting……………………………………… E-16
Configuring Current Time and Date Settings ………………………………………………………… E-17
To change the current time and date settings …………………………………………………… E-17
Hand Home Position Adjustment ……………………………………………………………………… E-20
To adjust home positions …………………………………………………………………………… E-20
Taking Temperature Readings …………………………………………………………………………… E-22
To take temperature readings ……………………………………………………………………… E-22
To calibrate the temperature sensor ……………………………………………………………… E-24
Specifying Temperature Unit …………………………………………………………………………… E-25
To specify the temperature unit …………………………………………………………………… E-25
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Checking the Current Time in a Different Time Zone………………………………………………… E-26
To enter the World Time Mode …………………………………………………………………… E-26
To configure World Time City and summer time settings ……………………………………… E-27
To swap your Home Time and World Time Cities ……………………………………………… E-28
Using the Stopwatch ……………………………………………………………………………………… E-29
To enter the Stopwatch Mode ……………………………………………………………………… E-29
To perform an elapsed time operation …………………………………………………………… E-29
To pause at a split time……………………………………………………………………………… E-29
To measure two finishes …………………………………………………………………………… E-30
Using the Countdown Timer ……………………………………………………………………………… E-31
To enter the Countdown Timer Mode……………………………………………………………… E-31
To specify the countdown start time ……………………………………………………………… E-31
To perform a countdown timer operation ………………………………………………………… E-32
To stop the alarm …………………………………………………………………………………… E-32
Using the Alarm …………………………………………………………………………………………… E-33
To enter the Alarm Mode …………………………………………………………………………… E-33
To set an alarm time ………………………………………………………………………………… E-34
To test the alarm …………………………………………………………………………………… E-34
To turn an alarm and the Hourly Time Signal on and off………………………………………… E-35
To stop the alarm …………………………………………………………………………………… E-35
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Illumination ………………………………………………………………………………………………… E-36
To illuminate the display manually ………………………………………………………………… E-36
To change the illumination duration ……………………………………………………………… E-36
To enable or disable the auto light switch ………………………………………………………… E-38
Button Operation Tone …………………………………………………………………………………… E-40
To enable or disable the button operation tone ………………………………………………… E-40
Low Battery Indication …………………………………………………………………………………… E-41
Troubleshooting …………………………………………………………………………………………… E-42
Specifications ……………………………………………………………………………………………… E-45
E-7
Mode Reference Guide
The mode you should select depends on what you want to do.
To do this: Enter this mode: See:
•View the current time in the Home City
•View the current time in the World Time City Any mode E-13
•View the current date in the Home City
•Configure Home City and daylight saving time (DST) settings
•Configure time and date settings
Timekeeping Mode E-13
Determine the temperature at your current location Thermometer Mode E-22
Configure World Time settings World Time Mode E-26
Use the stopwatch to measure elapsed time Stopwatch Mode E-29
Use the countdown timer Countdown Timer Mode E-31
Set an alarm time Alarm Mode E-33
Operation Guide 5446

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Selecting a Mode
•The illustration below shows which buttons you need to press to navigate between modes.
•To return to the Timekeeping Mode from any other mode, hold down Cfor about two seconds.
Thermometer Mode
Timekeeping Mode
Mode dial hand
Thermometer Mode
Timekeeping Mode
Mode dial hand
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•The mode dial hand indicates the watch’s current mode.
World Time Mode Stopwatch Mode
Countdown Timer Mode
Alarm Mode
World Time Mode Stopwatch Mode
Countdown Timer Mode
Alarm Mode
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General Functions (All Modes)
The functions and operations described in this section can be used in all of the modes.
Direct Timekeeping Mode Access
•To enter the Timekeeping Mode from any other mode, hold down Cfor about two seconds.
Auto Return Features
•The watch will automatically return to the Timekeeping Mode if you do not perform any button operation
for a particular amount of time in each mode.
Mode Name Approximate Elapsed Time
Thermometer 1 to 2 minutes
Alarm 2 to 3 minutes
Setting screen (digital setting flashing) 2 to 3 minutes
Initial Screens
When you enter the Alarm or World Time Mode, the data you were viewing when you last exited the mode
appear first.
Scrolling
The Dand Bbuttons are used on the setting screen to scroll through data on the display. In most
cases, holding down these buttons during a scroll operation scrolls through the data at high speed.
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Moving the Hands Out of the Way for Better Viewing
You can use the procedure below to temporarily move the hour and minute hands out of the way to better
view what is on the display.
•This operation can be performed in any mode. In the case of a setting mode (setting flashing on the
screen), the hands will move out of the way automatically, even if you do not perform the below
operation.
1. While holding down B, press C.
•This will cause the hour and minute hands to move to a location where they do not block your view
of the digital display.
Example: When the current time is 8:23
Flashes while the hands
are moved out of the way.
2. Holding down Bagain as you press Cwill cause the hands to return to their normal positions (normal
timekeeping).
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Note
•Watch button functions are the same regardless of whether the hands are moved out of the way or at
their normal positions.
•Changing to another mode will cause the hands to move back to their normal positions.
•The hands also will move back to their normal positions automatically if no operation is performed for
about one hour.
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Timekeeping
In addition to viewing the current time (Home Time), day, and day of the week at your location (Home
City), you can also use World Time to view the time at locations around the globe.
Configuring Home City Settings: page E-15
Configuring World Time Settings: page E-26
Hour hand
Second hand
World Time
minute hand
World Time
hour hand
Minute hand
Day
Day of week
World Time AM/PM
• Home Time AM/PM can be determined by viewing the
Hour:Minutes, Seconds digital display (shown below).
Date Screen
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Navigating between Display Screens
Each press of Atoggles cycles the display screens as shown below.
Day of week, Day Month Day, Seconds Hour : Minutes, Seconds
PM indicator
(Displayed when
12-hour timekeeping
is selected.)
E-15
Configuring Home City Settings
There are two Home City settings: actually selecting the Home City, and selecting either standard time or
daylight saving time (DST).
To configure Home City settings
1. In the Timekeeping Mode, hold down Auntil ADJ appears in the
upper display.
•When you release A(after ADJ appears), city code will be
flashing in the upper display. This is the setting mode.
•The watch will exit the setting mode automatically if you do not
perform any operation for about two or three minutes.
2. Use D(East) and B(West) to scroll through the available city codes.
•Keep scrolling until the city code you want to select as your Home
City is shown in the upper display.
•For details about city codes, see the “City Code Table” at the back
of this manual.
3. Press C.
•This will cause the DST indicator to appear in the upper display
and the DST setting of the currently selected Home City to appear
in the upper display.
4.
Press
D
to toggle the DST setting between daylight saving time (ON)
and standard time (OFF).
•Note that you cannot switch between standard time and daylight
saving time (DST) while UTC is selected as your Home City.
City code
DST indicator
City code
DST indicator
Operation Guide 5446

E-16
5. After all of the settings are the way you want, press Ato exit the setting screen.
•The DST indicator will be on the upper display while daylight saving time is turned on.
Note
•After you specify a city code, the watch will use UTC* offsets in the World Time Mode to calculate
the current time for other time zones based on the current time in your Home City.
* Coordinated Universal Time, the world-wide scientific standard of timekeeping.
The reference point for UTC is Greenwich, England.
To change the daylight saving time (summer time) setting
1. In the Timekeeping Mode, hold down Auntil ADJ appears in the
upper display.
•When you release A(after ADJ appears), city code will be
flashing in the upper display.
2. Press C.
•This will cause the DST indicator to appear in the upper display
and the DST setting of the currently selected Home City to appear
in the upper display.
3. Press Dto toggle the DST setting between daylight saving time (ON) and standard time (OFF).
4. After all of the settings are the way you want, press Ato exit the setting screen.
•The DST indicator will be on the upper display while daylight saving time is turned on.
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Configuring Current Time and Date Settings
You can use the procedure below to adjust the Timekeeping Mode time and date settings if they are off.
Changing the digital Home City data should cause the analog time setting to change accordingly. If the
analog time does not indicate the digital time, check the home positions of the hands and make
adjustments if necessary (page E-20).
To change the current time and date settings
1. In the Timekeeping Mode, hold down Auntil ADJ appears in the
upper display.
•When you release A(after ADJ appears), city code will be flashing
in the upper display.
City codeCity code
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2. Press Cto move the flashing in the sequence shown below to select the other settings.
City Code DST
Illumination
Duration
Button Operation
Tone On/Off Day Month
12/24-Hour
Format Seconds Hour
Year
Minutes
•The following steps explain how to configure timekeeping settings only.
3. When the timekeeping setting you want to change is flashing, use Dand/or Bto change it as
described below.
Screen To do this: Do this:
Change the city code Use D(East) and B(West).
Toggle between daylight saving time (ON) and
standard time (OFF). Press D.
Toggle between 12-hour (12H) and 24-hour (24H)
timekeeping. Press D.
Reset the seconds to 00
(If the current seconds count is between 30 and 59,
one is added to the minute count).
Press D.
Change the hour or minutes
Use D(+) and B(–).
Change the year, month, or day
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4. After all of the settings are the way you want, press Ato exit the setting screen.
Note
•For information about selecting a Home City and configuring the DST setting, see “Configuring
Home City Settings” (page E-15).
•While the 12-hour format is selected for timekeeping, a P(PM) indicator will appear for times from
noon to 11:59 p.m. No indicator appears for times from midnight to 11:59 a.m. With 24-hour format,
time is displayed from 0:00 to 23:59, without any P(PM) indicator.
•The watch’s built-in full automatic calendar makes allowances for different month lengths and leap
years. Once you set the date, there should be no reason to change it except after you have the
watch’s battery replaced.
•The day of the week changes automatically as the date and/or year changes. Make sure that your
date and year settings are correct.
•Refer to the pages shown below for more information on Timekeeping Mode settings.
- Button operation tone on/off: “To enable or disable the button operation tone” (page E-40)
- Illumination duration setting: “To change the illumination duration” (page E-36)
E-20
Hand Home Position Adjustment
Strong magnetism or impact can cause the hands of the watch to be off.
•Home position adjustment is not necessary when the analog time and digital time are the same time in
the Timekeeping Mode.
To adjust home positions
1. In the Timekeeping Mode, hold down Aand keep it depressed for
about five seconds until H.SET appears on the upper display.
•When you release Aafter H.SET appears, the second hand will
move to 12 o’clock. This indicates the second hand home position
adjustment mode.
•Though ADJ will appear in the upper display about two seconds
after you hold down A, do not release the button yet. Keep it
depressed until H.SET appears.
•Home position adjustment is performed in the following sequence:
second hand, current time hour and minute hand, World Time hour
and minute hand, mode hand.
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2. Use Cto select the hand (s) you want to adjust.
•The selected hand (s) will move to 12 o’clock, and the upper display and lower display will show
the information below.
Upper display Lower display Selected hand
H.SET Flashing 00 Second hand
Flashing 0:00 Not displayed Hour and minute hands
Flashing SUB Flashing 1World Time hour and minute hands
Flashing SUB Flashing 2Mode dial hand
•If the selected hand does not move exactly to 12 o’clock, perform step 3 below to adjust it.
•The watch will return to regular timekeeping automatically if you do not perform any operation for
about two or three minutes. Any changes you have made to settings up to that point will be saved.
3. Use D(+) and B(–) to adjust the position of the currently selected hand.
•Holding down either button will cause the hand to move at high speed. Once started, high-speed
hand movement will continue even if you release the button. To stop high-speed hand movement,
press any button.
•The second hand and mode dial hand will automatically stop high-speed movement after they
complete one revolution. The minute hand will stop automatically after 12 revolutions.
4. Press Ato exit home position correction and return to regular timekeeping.
Note
After performing home position adjustment, check to make sure that the analog hands and the upper
display indicate the same time. If they do not, perform home position adjustment again.
E-22
Taking Temperature Readings
This watch uses a temperature sensor to measure temperature.
To take temperature readings
While in the Timekeeping Mode, press D.
•TEMP will appear in the upper display and temperature measurement
will start. After about one second, the measurement reading will
appear in the upper display.
•The watch will continue to take temperature readings every five
seconds for about two minutes.
•The watch will return to the Timekeeping Mode after the reading
operation is complete (about two minutes).
•Press Dto restart temperature readings.
•Pressing Cwhile a reading operation is in progress will stop the
operation and enter the Timekeeping Mode.
Temperature
•Temperature is displayed in units of 0.1°C (or 0.2°F).
•The displayed temperature value changes to - - - °C (or °F) if a measured temperature falls outside the
range of –10.0°C to 60.0°C (14.0°F to 140.0°F). The temperature value will reappear as soon as the
measured temperature is within the allowable range.
TemperatureTemperature
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Display Units
You can select either Celsius (°C) or Fahrenheit (°F) for the displayed temperature value. See “To specify
the temperature unit” (page E-25).
Temperature Sensor Calibration
The temperature sensor built into the watch is calibrated at the factory and normally requires no further
adjustment. If you notice serious errors in the temperature readings produced by the watch, you can
calibrate the sensor to correct the errors.
Important!
•Incorrectly calibrating the temperature sensor can result in incorrect readings.
Carefully read the following before doing anything.
–
Compare the readings produced by the watch with those of another reliable and accurate thermometer.
– If adjustment is required, remove the watch from your wrist and wait for 20 or 30 minutes to give the
temperature of the watch time to stabilize.
Operation Guide 5446

E-24
To calibrate the temperature sensor
1. Take a reading with another measurement device to determine the
exact current temperature.
2. With the watch in the Timekeeping Mode, press Dto enter the
Thermometer Mode.
3. Hold down Afor about two seconds until the temperature reading
disappears from the upper display. Release Aat this time, which will
cause the temperature reading to flash, which indicates the setting
mode.
4. Use D(+) and B(−) to calibrate the temperature value with the reading of another instrument.
•Each press of a button changes the temperature value in units of 0.1°C (0.2°F).
•To return the temperature to its uncalibrated value (OFF setting), press Dand Bat the same
time.
5. Press Ato complete calibration and restart the temperature reading operation.
Thermometer Precautions
Temperature measurements are affected by your body temperature (while you are wearing the watch),
direct sunlight, and moisture. To achieve a more accurate temperature measurement, remove the watch
from your wrist, place it in a well ventilated location out of direct sunlight, and wipe all moisture from the
case. It takes approximately 20 to 30 minutes for the case of the watch to reach the actual surrounding
temperature.
E-25
Specifying Temperature Unit
Use the procedure below to specify the temperature unit to be used in the Thermometer Mode.
Important!
When TOKYO is selected as the Home City, the temperature unit is set automatically to Celsius (°C). This
setting cannot be changed.
To specify the temperature unit
1. In the Timekeeping Mode, press Dto enter the Thermometer Mode.
2. Hold down Afor about two seconds until the temperature reading
disappears from the upper display.
3. Press Cto display the current temperature unit in the lower display.
4. Press Dto toggle the temperature unit between °C (Celsius) and °F
(Fahrenheit).
5. After the setting is the way you want, press Ato exit the setting
screen.
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Checking the Current Time in a Different Time Zone
You can use the World Time Mode to view the current time in one of 31 time zones (48 cities) around the
globe. The city that is currently selected in the World Time Mode is called the “World Time City”.
•You also can swap the current World Time City and Home Time City in the World Time Mode (page
E-28).
To enter the World Time Mode
Use Cto select the World Time Mode as shown on page E-8.
•The mode dial hand will point to WT.
•The city code of the currently selected World Time City will appear in
the upper display.
•Pressing Adisplays the current time (hour, minute second) of the
World Time City in the upper display.
Enter the Timekeeping Mode to check whether the indicated World Time is AM or PM (page E-13).
Currently selected
World Time City
World Time
hour hand
World Time
minute hand
Currently selected
World Time City
World Time
hour hand
World Time
minute hand
E-27
To configure World Time City and summer time settings
1. In the World Time Mode, use D(East) to scroll through city codes.
•For details about city codes, see the “City Code Table” at the back of this manual.
•Holding down Dwill scroll at high speed.
•Pressing down Band Dat the same time will jump to the UTC city code.
2. To toggle between summer time (DST in the upper display) and standard time (DST not displayed),
hold down A.
DST indicator
Hold down A
•Using the World Time Mode to change the DST setting of the city code that is selected as your
Home City also will change the Timekeeping Mode time DST setting.
•Note that you cannot switch between standard time/daylight saving time (DST) while UTC is
selected as the World Time City.
•Note that the standard time/daylight saving time (DST) setting affects only the currently selected
city code. Other city codes are not affected.
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Swapping the Home City and World Time City
You can use the procedure below to swap your Home Time City with your World Time City.
This function comes in handy for those who often travel between two different time zones.
•You need to configure starting Home City and World Time City settings before performing the
procedure below.
To configure Home City settings (page E-15)
To configure World Time City and summer time settings (page E-27)
To swap your Home Time and World Time Cities
Press Aand Bat the same time.
•The Home City time (indicated by the main hour and minute hands) and the World Time City time
(indicated by the dial hands) will be swapped with each other.
$and %
Current Time in
World City (TYO)
Home City [NYC] Time
Current time in
World City (NYC)
Home City [TYO] Time
E-29
Using the Stopwatch
The stopwatch measures elapsed time, split times, and two finishes.
To enter the Stopwatch Mode
Use Cto select the Stopwatch Mode as shown on page E-8.
The mode dial hand will move to STW.
To perform an elapsed time operation
DDDDA
Start Stop (Resume) (Stop) Reset
To pause at a split time
DAADA
Start Split
(SPL appears in
the upper display.)
Split release Stop Reset
Seconds
Minutes
1/100 second
Seconds
Minutes
1/100 second
E-30
To measure two finishes
DAD A A
Start Split
First runner finishes.
(SPL appears in the
upper display.)
Display time of first
runner
Stop
Second runner
finishes.
Split release
Display time of
second runner
Reset
Note
•The Stopwatch Mode can indicate elapsed time up to 59 minutes, 59.99 seconds.
•Once started, stopwatch timing continues until you press Dto stop it, even if you exit the Stopwatch
Mode to another mode and even if timing reaches the stopwatch limit defined above.
•Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time.
E-31
Using the Countdown Timer
The countdown timer can be configured to start at a preset time and sound an alarm when the end of the
countdown is reached.
To enter the Countdown Timer Mode
Use Cto select the Countdown Timer Mode as shown on page E-8.
•The mode dial hand will move to TMR and the upper display will show the current countdown time.
To specify the countdown start time
1. Enter the Countdown Timer Mode.
•If a countdown is in progress (indicated by the seconds counting
down), press Dto stop it and then press Ato reset to the current
countdown start time.
•If a countdown is paused, press Ato reset to the current
countdown start time.
2. Hold down Auntil the minute setting of the current countdown start
time starts to flash. This is the setting screen.
3. Use D(+) and B(–) to change the minute.
•To set the starting value of the countdown time to 60 minutes, set
60'00.
4. Press Ato exit the setting screen.
Countdown time
(Minutes, seconds)
Countdown time
(Minutes, seconds)
Operation Guide 5446

E-32
To perform a countdown timer operation
DDD D A
Start Stop (Resume) (Stop) Reset
•Before starting a countdown timer operation, check to make sure that a countdown operation is not
already in progress (indicated by the seconds counting down). If it is, press Dto stop it and then A
to reset to the countdown start time.
•An alarm sounds for ten seconds when the end of the countdown is reached. This alarm will sound in
all modes. The countdown time is reset to its starting value automatically after the alarm sounds.
To stop the alarm
Press any button.
E-33
Using the Alarm
You can set five independent daily alarms.
When an alarm is turned on, an alarm will sound for about 10 seconds each day when the time in the
Timekeeping Mode reaches the preset alarm time. This is true even if the watch is not in the Timekeeping
Mode.
You can also turn on an Hourly Time Signal, which will cause the watch to beep twice every hour on the
hour.
To enter the Alarm Mode
Use Cto select the Alarm Mode as shown on page E-8.
•The mode dial hand will move to ALM.
•The upper display will initially show the currently selected alarm
number indicator (AL1 to AL5) or the hourly time signal indicator (SIG).
Next, the indicator will alternate with the alarm time setting (in the case
of an alarm) or :00 (in the case of the hourly time signal).
Alarm number or SIG
Alarm time
(Hour : Minutes)
Alarm number or SIG
Alarm time
(Hour : Minutes)
E-34
To set an alarm time
1. In the Alarm Mode, use Dto scroll through the alarm screens in the upper display until the one you
want to change is shown.
AL1 AL2 AL3
SIG AL5 AL4
2. Hold down Auntil the hour digits of the alarm setting start to flash in the upper display.
•This is the setting screen.
3. Press Cto move the flashing between the hour and minute settings.
4. While a setting is flashing, use D(+) and B(–) to change it.
•When setting the alarm time using the 12-hour format, take care to
set the time correctly as a.m. (no indicator) or p.m. (Pindicator).
5. Press Ato exit the setting screen.
To test the alarm
In the Alarm Mode, hold down Dto sound the alarm.
E-35
To turn an alarm and the Hourly Time Signal on and off
1. In the Alarm Mode, use Dto select an alarm or the Hourly Time
Signal.
2. When the alarm or the Hourly Time Signal you want is selected, press
Ato turn it on
(
on
)
and off
(- -)
.
• The alarm on indicator (when any alarm is on), and the Hourly Time
Signal on indicator (when the Hourly Time Signal is on) are shown on
the upper display in all modes.
To stop the alarm
Press any button.
Alarm on indicator
Hourly time signal
on indicator
Alarm on indicator
Hourly time signal
on indicator
E-36
Illumination
The display of the watch is illuminated for easy reading in the dark. The watch’s auto light switch turns on
illumination automatically when you angle the watch towards your face.
•The auto light switch must be enabled (page E-38) for it to operate.
To illuminate the display manually
Press Bin any mode (except when a flashing setting screen is
displayed) to illuminate the display.
•You can use the procedure below to select either 1.5 seconds or 3
seconds as the illumination duration. When you press B, the display
will remain illuminated for about 1.5 seconds or 3 seconds, depending
on the current illumination duration setting.
•The above operation illuminates the display regardless of whether the
auto light switch is enabled or disabled.
To change the illumination duration
1. In the Timekeeping Mode, hold down Auntil ADJ appears in the upper display.
•When you release A(after ADJ appears), city code will be flashing in the upper display. This is
the setting mode.
2. Use Cto cycle through the settings on the upper display until the current illumination duration (LT1 or
LT3) is shown.
•See the sequence in step 2 of the procedure under “To change the current time and date
settings” (page E-17) for information about how to scroll through setting screens.
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E-37
3. Press Dto toggle the illumination duration between three seconds (LT3 displayed) and 1.5 seconds
(LT1 displayed).
4. After all of the settings are the way you want, press Ato exit the setting screen.
About the Auto Light Switch
While the Auto Light Switch is enabled, illumination will turn on
whenever you position your wrist as described below in any mode.
Moving the watch to a position that is parallel to the ground and
then tilting it towards you more than 40 degrees causes
illumination to turn on.
Warning!
•Always make sure you are in a safe place whenever you are reading the display of the watch
using the auto light switch. Be especially careful when running or engaged in any other activity
that can result in accident or injury. Also take care that sudden illumination by the auto light
switch does not startle or distract others around you.
•When you are wearing the watch, make sure that its auto light switch is turned off before riding
on a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended
operation of the auto light switch can create a distraction, which can result in a traffic accident
and serious personal injury.
More than
40°
Wear the watch on the
outside of your wrist
More than
40°
Wear the watch on the
outside of your wrist
E-38
Note
•The auto light switch is always disabled, regardless of its enabled/disabled setting, when any one of
the following conditions exists.
While an alarm is sounding
While a hand shift operation is in progress
•If you have Auto Light enabled, display illumination may be delayed if you angle the watch towards
your face while a temperature reading operation is being performed.
To enable or disable the auto light switch
In the Timekeeping Mode, hold down Bfor about three seconds to
toggle the auto light switch between enabled (LT shown in the upper
display) and disabled (LT not displayed).
•The auto light switch enabled indicator (LT) is on the upper display in
all modes while the auto light switch is turned enabled.
•The auto light switch remains enabled for about six hours. After that
disables automatically.
Illumination Precautions
•Illumination may be hard to see when viewed under direct sunlight.
•Illumination turns off automatically whenever an alarm sounds.
•Frequent use of illumination runs down the battery.
Auto light switch
enabled indicator
Auto light switch
enabled indicator
E-39
Auto light switch precautions
•Illumination may not turn on if the face of the watch is more than 15 degrees above
or below parallel. Make sure that the back of your hand is parallel to the ground.
•Illumination turns off after the preset illumination duration (page E-36), even if you
keep the watch pointed towards your face.
•Static electricity or magnetic force can interfere with proper operation of the auto
light switch. If illumination does not turn on, try moving the watch back to the
starting position (parallel with the ground) and then tilt it back towards your face
again. If this does not work, drop your arm all the way down so it hangs at your
side, and then bring it back up again.
•You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
Operation Guide 5446

E-40
Button Operation Tone
When enabled, the button operation tone sounds any time you press one of the watch’s buttons. You can
enable or disable the button operation tone as desired.
•Even if you disable the button operation tone, the alarm, Hourly Time Signal, and Countdown Timer
Mode alarm all operate normally.
To enable or disable the button operation tone
1. In the Timekeeping Mode, hold down Auntil ADJ appears in the upper display.
•When you release A(after ADJ appears), city code will be flashing in the upper display.
2. Use Cto cycle through settings on the upper display until the current
button operation tone setting (MUTE or KEY ) is shown.
•See the sequence in step 2 of the procedure under “To change the
current time and date settings” (page E-17) for information about
how to scroll through setting screens.
3. Press Dto toggle the button operation tone setting between enabled (KEY ) and disabled (MUTE).
4. After the setting is the way you want, press Ato exit the setting screen.
E-41
Low Battery Indication
A low battery indicator appears on the display when battery power is low. Have the batteries replaced as
soon as possible.
Note
•For information about battery life guidelines and supported battery types, see the product
specifications.
See “Specifications” (page E-45).
The conditions below are in effect while the low battery indicator is flashing.
•All hands are stopped.
•Except for the low battery indicator, all other display functions are
disabled.
•Watch tones are disabled.
•Display illumination is disabled.
•Watch operations are disabled.
Note
•Sequentially or repeatedly performing sensor, light, alarm, and other power intensive operations
over a short period can cause a sudden drop in battery power, which will make the low battery
indicator flash. Even though the low battery indicator may disappear and watch functions may
become re-enabled, battery replacement is recommended.
Low battery indicatorLow battery indicator
E-42
Troubleshooting
Time Setting
■ The current time setting is off by a couple of hours.
Your Home City setting may be wrong (page E-15). Check your Home City setting and correct it, if
necessary.
■ The current time setting is off by one hour.
You may need to change your Home City’s standard time/daylight saving time (DST) setting. Use the
procedure under “To change the current time and date settings” (page E-17) to change the standard time/
daylight saving time (DST) setting.
World Time Mode
■The time for my World Time City is off in the World Time Mode.
This could be due to incorrect switching between standard time and daylight saving time.
See “To configure World Time City and summer time settings” (page E-27) for more information.
E-43
Batteries
■The low battery indicator is flashing on the digital display.
The watch’s battery power is low. Have the batteries replaced as soon as
possible.
See “Low Battery Indication” (page E-41).
Low battery indicatorLow battery indicator
E-44
Temperature Readings
■ The temperature unit setting won’t change.
The temperature unit setting is always Celsius (°C) whenever TOKYO is selected as the Home City. In
this case, the setting cannot be changed.
■“ERR” appears while a sensor operation is in progress.
Subjecting the watch to strong impact can cause sensor malfunction or improper contact of internal
circuitry. When this happens, ERR (error) will appear on the upper display and sensor operations will be
disabled.
•If ERR appears while a measurement operation is being performed in a sensor mode, restart the
measurement. If ERR appears on the upper display again, it can mean there is something wrong with
the sensor.
•If ERR keeps appearing during measurement, it could mean there is a problem with the applicable
sensor.
E-45
Specifications
Accuracy at normal temperature: ±15 seconds a month
Digital Timekeeping:
Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Three display formats (day of week, day; month, day, seconds; hour, minutes, seconds);
Home City code (can be assigned one of 48 city codes); standard time / daylight saving time
(summer time)
Analog Timekeeping: Hour, minutes (hand moves every 10 seconds), seconds, World Time timekeeping
(Hands move every 20 seconds.)
Thermometer:
Measurement and display range: –10.0°C to 60.0°C (or 14.0°F to 140.0°F)
Display unit: 0.1°C (or 0.2°F)
Measurement timing: Every five seconds in the Thermometer Mode
Other: Calibration; Selectable measurement unit
Temperature Sensor Precision:
±2°C (±3.6°F) in range of –10°C to 60°C (14.0°F to 140.0°F)
World Time: 48 cities (31 time zones)+ UTC; Home City/World Time City swapping
Other: daylight saving time/standard time
Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 59' 59.99"
Measuring modes: Elapsed time, split time, two finishes
E-46
Countdown Timer:
Measuring unit: 1 second
Countdown range: 60 minutes
Setting ranges: Countdown start time (1 to 60 minutes, 1-minute increments)
Alarms: 5 daily alarms; Hourly Time Signal
Illumination: LED light; Selectable illumination duration (approximately 1.5 seconds or 3 seconds);
Auto Light Switch
Other: Button operation tone on/off, Low battery alert; Moving the Hands to View the Digital Display
Battery: Two silver oxide batteries (Type: SR927W)
Approximate battery operating time: 2 years under the following conditions:
•1 illumination operation (1.5 seconds) per day
•Alarm: 10 seconds/day
•Temperature readings: Once/week
Frequent use of illumination runs down the battery. Particular care is required when using the auto
light switch (page E-37).
L-1
Operation Guide 5446

L-2
City Code Table
City
Code City name UTC Offset/ GMT Differential
PPG PAGO PAGO –11
HNL HONOLULU –10
ANC ANCHORAGE –9
YVR VANCOUVER –8
LAX LOS ANGELES
YEA EDMONTON –7
DEN DENVER
MEX MEXICO CITY –6
CHI CHICAGO
NYC NEW YORK –5
SCL SANTIAGO –4
YHZ HALIFAX
YYT ST. JOHN’S –3.5
RIO RIO DE JANEIRO –3
FEN F. DE NORONHA –2
RAI PRAIA –1
City
Code City name UTC Offset/ GMT Differential
UTC
0LIS LISBON
LON LONDON
MAD MADRID
+1
PAR PARIS
ROM ROME
BER BERLIN
STO STOCKHOLM
ATH ATHENS
+2CAI CAIRO
JRS JERUSALEM
MOW MOSCOW +3
JED JEDDAH
THR TEHRAN +3.5
DXB DUBAI +4
KBL KABUL +4.5
KHI KARACHI +5
L-3
City
Code City name UTC Offset/ GMT Differential
DEL DELHI +5.5
KTM KATHMANDU +5.75
DAC DHAKA +6
RGN YANGON +6.5
BKK BANGKOK +7
SIN SINGAPORE
+8
HKG HONG KONG
BJS BEIJING
TPE TAIPEI
SEL SEOUL +9
TYO TOKYO
ADL ADELAIDE +9.5
GUM GUAM +10
SYD SYDNEY
NOU NOUMEA +11
WLG WELLINGTON +12
•This table shows the city codes of this watch.
(As of December 2014)
•The rules governing global times (UTC offset
and GMT differential) and summer time are
determined by each individual country.
Operation Guide 5446