Casio 3433 User manual

Operation Guide 3433
E-9
xWhen DST is turned on, the UTC offset setting range is –11.0 to +15.0, in
0.5-hour units.
xFor information about Flash Alert, see “Flash Alert” (page E-34).
4. Press Ato exit the setting screen.
xThe day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
E-8
3. When the setting you want to change is flashing, use Dand Bto change it as
described below.
Screen To do this: Do this:
Reset the seconds to Press D.
Toggle between Daylight Saving Time
( ) and Standard Time ( )
Press D.
Specify the UTC offset Use D(+) and B(–).
Change the hour or minutes Use D(+) and B(–).
Change the year
Change the month or day
xSee “Daylight Saving Time (DST)” on page E-9 for details about DST setting.
xFor details about the UTC offset, see the “City Code Table” at the back of this
manual.
xThe UTC offset setting range is –12.0 to +14.0, in 0.5-hour units.
E-7
To set the time and date
1. In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2. Press Cto move the flashing in the sequence shown
below to select other settings.
Seconds DST UTC Offset
YearDayFlash Alert
CC
CC
C
Hour
Minutes
C
C
C
Month
C
UTC Offset
E-6
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date.
Read This Before You Set the Time and Date !
The times displayed in the Timekeeping Mode and World
Time Mode are linked. Because of this, make sure you
select the UTC offset before you set the time and date.
Month – Day
PM indicator
Hour : Minutes Seconds
Day of week
E-5
CC
C
Stopwatch Mode Countdown Timer
Mode
Alarm Mode
E-4
General Guide
xPress Cto change from mode to mode.
xIn any mode (except when a setting screen is on the display), press Bto illuminate
the display.
C
Timekeeping Mode World Time Mode
C
E-3
To test the alarm.................................................................................................... E-27
To turn an alarm on and off .................................................................................. E-28
To turn the Hourly Time Signal on and off.......................................................... E-29
To illuminate the display....................................................................................... E-31
To specify the illumination duration.................................................................... E-31
To turn the auto light switch on and off .............................................................. E-33
To turn Flash Alert on and off .............................................................................. E-35
To turn the button operation tone on and off ..................................................... E-36
E-2
Procedure Lookup
The following is a handy reference list of all the operational procedures contained in
this manual.
To set the time and date ......................................................................................... E-7
To toggle the Timekeeping Mode time between DST and Standard Time ....... E-10
To toggle between 12-hour and 24-hour timekeeping ....................................... E-11
To view the time for another city code ................................................................ E-12
To toggle a city code time
between Standard Time and Daylight Saving Time........................................ E-13
To measure times with the stopwatch................................................................. E-15
To use Auto-Start .................................................................................................. E-16
To configure the countdown timer ...................................................................... E-20
To use the countdown timer................................................................................. E-22
To set an alarm time.............................................................................................. E-25
E-1
Contents
General Guide.......................................................................................................... E-4
Timekeeping............................................................................................................. E-6
World Time............................................................................................................. E-12
Stopwatch .............................................................................................................. E-14
Countdown Timer.................................................................................................. E-17
Alarms .................................................................................................................... E-23
Illumination ............................................................................................................ E-30
Reference ............................................................................................................... E-34
Specifications ........................................................................................................ E-42
Operating Precautions.......................................................................................... E-44
User Maintenance.................................................................................................. E-54
E
About This Manual
xDepending 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 sample displays
in this manual are shown using dark figures on a light
background.
xButton operations are indicated using the letters shown
in the illustration.
xEach section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
xTo ensure that this watch provides you with the years of
service for which it is designed, be sure to carefully read
and follow the instructions under “Operating Precautions”
and “User Maintenance”.
xBe sure to keep all user documentation handy for future
reference.
MA1401-EA © 2014 CASIO COMPUTER CO., LTD.

Operation Guide 3433
E-19
Countdown End Beeper
The countdown end beeper lets you know when the countdown reaches zero.
xWhen the progress beeper is turned off, the countdown end beeper sounds for
about 10 seconds, or until you press any button to stop it.
xWhen the progress beeper is turned on, the countdown end beeper sounds for
about one second.
Progress Beeper
When the progress beeper is turned on, the watch uses beeps to signal countdown
progress as described below.
xStarting from five minutes before the end of the countdown, the watch emits four
short beeps at the top of each countdown minute.
x30 seconds before the end of the countdown, the watch emits four short beeps.
xThe watch emits a short beep for each of the last 10 seconds of the countdown.
xIf the countdown start time is six minutes or greater, the watch emits a short beep
for each second of the final 10 seconds before the five-minute point is reached. Four
short beeps are emitted to signal when the five-minute point is reached.
E-18
Auto-repeat
When auto-repeat is turned on, the countdown restarts automatically from the
countdown start time when it reaches zero.
When auto-repeat is turned off, the countdown stops when it reaches zero and the
display shows the original countdown start time.
xPressing Dwhile an auto-repeat countdown is in progress pauses the current
countdown. You can resume the auto-repeat countdown by pressing D, or you can
press Ato reset to the countdown time starting value.
Countdown Timer Beeper Operations
The watch beeps at various times during a countdown so you can keep informed
about the countdown status without looking at the display. The following describes the
types of beeper operations the watch performs during a countdown.
E-17
Countdown Timer
The countdown timer can be set within a range of one
minute to 24 hours. An alarm sounds when the countdown
reaches zero. The countdown timer also has an auto-
repeat feature and a progress beeper that signals the
progress of the countdown.
xAll of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C(page E-5).
Configuring the Countdown Timer
The following are the settings you should configure before
actually using the countdown timer.
Countdown start time; Auto-repeat on/off; Progress beeper
on/off
xSee “To configure the countdown timer” (page E-20) for
information about setting up the timer.
Hours
Minutes
Seconds
E-16
About Auto-Start
With Auto-Start, the watch performs a 5-second countdown, and stopwatch operation
starts automatically when the countdown reaches zero.
During the final three seconds of the countdown, a beeper sounds with each second.
To use Auto-Start
1. While the stopwatch screen is showing all zeros in the
Stopwatch Mode, press A.
xThis displays a 5-second countdown screen.
xTo return to the all zeros screen, press Aagain.
2. Press Dto start the countdown.
xWhen the countdown reaches zero, a tone sounds and a
stopwatch timing operation starts automatically.
xPressing Dwhile the Auto-Start countdown is in
progress starts the stopwatch immediately.
E-15
To measure times with the stopwatch
Elapsed time
DDDDA
Start Stop Resume Stop Clear
Split time
DAADA
Start Split
(SPL displayed)
Split release Stop Clear
Two Finishes
DADAA
Start Split
First runner
finishes.
Display time of
first runner.
Stop
Second runner
finishes.
Split release
Display time of
second runner.
Clear
E-14
Stopwatch
The stopwatch lets you measure elapsed time, split times,
and two finishes. It also includes Auto-Start.
xThe display range of the stopwatch is 23 hours,
59 minutes, 59.99 seconds.
xThe stopwatch continues to run, restarting from zero after
it reaches its limit, until you stop it.
xThe stopwatch measurement operation continues even if
you exit the Stopwatch Mode.
xExiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to elapsed
time measurement.
xAll of the operations in this section are performed in
the Stopwatch Mode, which you enter by pressing C
(page E-5).
1/100 second
Hours
Minutes
Seconds
E-13
To toggle a city code time between Standard Time and Daylight Saving Time
1. In the World Time Mode, use Dto display the city code
whose Standard Time/Daylight Saving Time setting you
want to change.
2. Hold down Afor about one second to toggle Daylight
Saving Time (DST displayed) and Standard Time (DST
not displayed).
xThe DST indicator is on the display whenever you display
a city code for which Daylight Saving Time is turned on.
xNote that the DST/Standard Time setting affects only
the currently displayed city code. Other city codes are
not affected.
DST indicator
E-12
World Time
World Time shows the current time in 48 cities (29 time
zones) around the world.
xAll of the operations in this section are performed in
the World Time Mode, which you enter by pressing C
(page E-4).
To view the time for another city code
In the World Time Mode, press Dto scroll eastwardly
through city codes.
xFor full information about city codes, see the “City Code
Table” at the back of this manual.
xIf the current time for a city is wrong, check your
Timekeeping Mode time and the UTC offset settings and
make necessary changes.
City code
Current time and date in
selected city
E-11
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press Dto toggle between 12-hour timekeeping and
24-hour timekeeping.
xWith the 12-hour format, the P(PM) indicator appears to the left of the hour digits for
times in the range of noon to 11:59 p.m. and no indicator appears to the left of the
hour digits for times in the range of midnight to 11:59 a.m.
xWith the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
xThe 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
E-10
To toggle the Timekeeping Mode time between DST and Standard Time
1. In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2. Press Cto display the DST setting screen.
3. Press Dto toggle between Daylight Saving Time
(displayed) and Standard Time ( displayed).
4. Press Ato exit the setting screen.
xThe DST indicator appears on the display to indicate that
Daylight Saving Time is turned on.
DST indicator

Operation Guide 3433
E-29
To turn the Hourly Time Signal on and off
1. In the Alarm Mode, use Dto select the Hourly Time
Signal (SIG).
2. Press Ato toggle it on and off.
xThe Hourly Time Signal on indicator is shown on the
display in all modes while this function is turned on.
Hourly Time Signal on
indicator
E-28
To turn an alarm on and off
1. In the Alarm Mode, use Dto select an alarm.
2. Press Ato toggle it on and off.
xTurning on a alarm (AL1 or AL2) displays the alarm
on indicator on its Alarm Mode screen.
xTurning on the snooze alarm (SNZ) displays the alarm
on indicator and snooze alarm indicator on the Alarm
Mode snooze alarm screen.
xIn all modes, the alarm on indicator is shown for any
alarm that is currently turned on.
xThe alarm on indicator flashes while the alarm is
sounding.
xThe snooze alarm indicator flashes while the snooze
alarm is sounding and during the 5-minute intervals
between alarms.
Snooze alarm
indicator
Alarm on indicator
E-27
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, until you turn the alarm off (page E-28).
xAlarm and Hourly Time Signal operations are performed in accordance with the
Timekeeping Mode time.
xTo stop the alarm tone after it starts to sound, press any button.
xPerforming any one of the following operations during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
Displaying the Timekeeping Mode setting screen (page E-7)
Displaying the SNZ setting screen (page E-25)
To test the alarm
In the Alarm Mode, hold down Dto sound the alarm.
E-26
3. Press Cto move the flashing in the sequence shown below to select other
settings.
CCC
Hour Minutes Month Day
C
4. While a setting is flashing, use Dand Bto change it as described below.
Screen To do this: Do this:
Change the hour and
minutes
Use D(+) and B(–).
xWith the 12-hour format, set the time correctly
as a.m. or p.m. (Pindicator).
xTo set an alarm that does not include a month
and/or day, set for each setting.
Change the month and day
5. Press Ato exit the setting screen.
E-25
To set an alarm time
1. In the Alarm Mode, use Dto scroll through the alarm
screens until the one whose time you want to set is
displayed.
D
DD
D
xTo set an alarm time, display the applicable alarm screen (AL1, AL2 or SNZ).
xThe snooze alarm repeats every five minutes.
2. After you select an alarm, hold down Auntil the hour setting of the alarm time
starts to flash, which indicates the setting screen.
xThis operation turns on the alarm automatically.
E-24
Alarm Types
The alarm type is determined by the settings you make, as described below.
xDaily alarm
Set the hour and minutes for the alarm time. This type of setting causes the alarm to
sound everyday at the time you set.
xDate alarm
Set the month, day, hour and minutes for the alarm time. This type of setting causes
the alarm to sound at the specific time, on the specific date you set.
x1-Month alarm
Set the month, hour and minutes for the alarm time. This type of setting causes the
alarm to sound everyday at the time you set, only during the month you set.
xMonthly alarm
Set the day, hour and minutes for the alarm time. This type of setting causes the
alarm to sound every month at the time you set, on the day you set.
E-23
Alarms
You can set up to three independent multi-function alarms
with hour, minutes, month, and day. When an alarm is
turned on, the alarm tone sounds when the alarm time is
reached. One of the alarms is a snooze alarm.
You can also turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
xThe snooze alarm screen is indicated by SNZ, while the
other alarm screens are numbered AL1 and AL2. The
Hourly Time Signal screen is indicated by SIG.
xAll of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C(page E-5).
Alarm number
Alarm date
(Month – Day)
Alarm time
(Hour : Minutes)
E-22
To use the countdown timer
Press Dwhile in the Countdown Timer Mode to start the
countdown timer.
xThe countdown timer operation continues even if you exit
the Countdown Timer Mode.
xPress Dwhile a countdown operation is in progress to
pause it. Press Dagain to resume the countdown.
xTo stop a countdown operation completely, first pause
it (by pressing D), and then press A. This returns the
countdown time to its starting value.
E-21
3. When the setting you want to change is flashing, use Band Dto change it as
described below.
Setting Screen Button Operation
Hours, Minutes Use D(+) and B(–) to change the setting.
Auto-repeat Press Dto toggle auto-repeat on ( displayed)
and off ( displayed).
Progress Beeper Press Dto toggle the progress beeper on ( ) and
off ( ).
xTo specify a countdown start time of 24 hours, set .
4. Press Ato exit the setting screen.
xYou can also perform steps 1 and 2 of the above procedure whenever you need to
view the current auto-repeat and progress beeper settings.
E-20
To configure the countdown timer
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down Auntil the current
countdown start time starts to flash, which indicates the
setting screen.
xIf the countdown start time is not displayed, use the
procedure under “To use the countdown timer” (page
E-22) to display it.
2. Press Cto move the flashing in the sequence shown
below to select other settings.
Hours Minutes
Auto-repeatProgress Beeper
C
C
C C

Operation Guide 3433
E-39
xThe letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the
world-wide scientific standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s
rotation.
Illumination Precautions
xThe electro-luminescent panel that provides illumination loses power after very long
use.
xIllumination may be hard to see when viewed under direct sunlight.
xThe watch may emit an audible sound whenever the display is illuminated. This
is due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
xIllumination turns off automatically whenever an alarm sounds.
xFrequent use of illumination runs down the battery.
E-38
Timekeeping
xResetting the seconds to while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to without changing the minutes.
xThe year can be set in the range of 2000 to 2099.
xThe 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.
World Time
All World Time Mode times are calculated from the current time in the Timekeeping
Mode using UTC offset values.
xThe seconds count of the World Time is synchronized with the seconds count of the
Timekeeping Mode.
xThe UTC offset is a value that indicates the time difference between a reference
point in Greenwich, England and the time zone where a city is located.
E-37
Auto Return Features
xIf you leave the watch in the Alarm Mode for two or three minutes without performing
any operation, it automatically changes to the Timekeeping Mode.
xIf you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch automatically exits the setting screen.
Scrolling
The Band Dbuttons are used in various modes and setting screens to scroll
through data on the display. In most cases, holding down these buttons during a scroll
operation scrolls at high speed.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you
last exited the mode appears first.
E-36
Button Operation Tone
The button operation tone sounds any time you press one of the watch’s buttons. You
can turn the button operation tone on or off as desired.
xEven if you turn off the button operation tone, the alarms, the Hourly Time Signal,
the countdown alarm, and stopwatch auto start all operate normally.
To turn the button operation tone on and off
In any mode (except when a setting screen is on the
display), hold down Cto toggle the button operation tone
on (MUTE indicator not displayed) and off (MUTE indicator
displayed).
xHolding down Cto turn the button operation tone on or
off also causes the watch’s current mode to change.
xThe MUTE indicator is displayed in all modes when the
button operation tone is turned off.
MUTE indicator
E-35
To turn Flash Alert on and off
1. In the Timekeeping Mode, hold down Afor about two
seconds until the current time flashes on the display.
This is the setting screen.
2. Press Ceight times to display the Flash Alert setting
screen.
3. Press Dto toggle Flash Alert on ( displayed) and
off ( displayed).
4. Press Ato exit the setting screen.
xThe Flash Alert setting you select with the above
procedure is applied in all modes.
xWhen Flash Alert is on, appears on the
timekeeping screen for about one second whenever you
enter the Stopwatch, Countdown Timer, or Alarm Mode.
E-34
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Flash Alert
When Flash Alert is turned on, the illumination flashes for the alarms, the Hourly Time
Signal, the countdown alarm, and stopwatch auto start.
E-33
Warning!
xAlways make sure you are in a safe place whenever you are reading 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.
xWhen 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.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down Bfor about three seconds to toggle the auto
light switch on (auto light switch indicator displayed) or off (auto light switch indicator
not displayed).
xThe auto light switch indicator is on the display in all modes while the auto light
switch is turned on.
xIn order to protect against running down the battery, the auto light switch turns off
automatically approximately six hours after you turn it on.
E-32
About the Auto Light Switch
While the auto light switch is enabled, illumination turns 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 at more than 40 degrees causes illumination to turn on.
• Wear the watch on the outside of your wrist.
Parallel to ground More than 40°
E-31
To illuminate the display
In any mode, press Bto turn on illumination.
xThe above operation turns on illumination regardless of the current auto light switch
setting.
xYou can use the procedure below to select either 1.5 seconds or 3 seconds as the
illumination duration. When you press B, the illumination will remain on for about
1.5 seconds or 3 seconds, depending on the current illumination duration setting.
To specify the illumination duration
1. In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2. While the seconds are flashing, press Bto toggle the
setting between 1.5 seconds ( ) and 3 seconds ( ).
3. Press Ato exit the setting screen.
E-30
Illumination
This watch has an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark. The watch’s auto light switch turns on illumination
automatically when you angle the watch for reading
towards your face.
xThe auto light switch must be turned on (indicated by the
auto light switch indicator) for it to operate.
xSee “Illumination Precautions” (page E-39) for more important
information about using illumination.
Auto light switch indicator

Operation Guide 3433
L-4
xThis table shows the city codes of this watch.
xThe rules governing global times (UTC offset and GMT differential) and summer
time are determined by each individual country.
L-3
City
Code City UTC Offset/ GMT Differential
DXB Dubai +4
KBL Kabul +4.5
KHI Karachi +5
MLE Male
DEL Delhi +5.5
DAC Dhaka +6
RGN Yangon +6.5
BKK Bangkok +7
SIN Singapore
+8HKG Hong Kong
BJS Beijing
SEL Seoul +9
TYO Tokyo
ADL Adelaide +9.5
GUM Guam +10
SYD Sydney
City
Code City UTC Offset/ GMT Differential
NOU Noumea +11
WLG Wellington +12
*1As of December 2013, the official
UTC offset for Caracas, Venezuela
(CCS) has been changed from –4
to –4.5, but this watch still uses an
offset of –4 (the old offset) for CCS.
*2As of December 2013, the official
UTC offset for Moscow, Russia
(MOW) has been changed from +3
to +4, but this watch still uses an
offset of +3 (the old offset) for MOW.
Because of this, you should leave the
summer time setting turned on (which
advances the time by one hour) for
the MOW time.
L-2
City
Code City UTC Offset/ GMT Differential
PPG Pago Pago –11
HNL Honolulu –10
ANC Anchorage –9
YVR Vancouver
–8SFO San Francisco
LAX Los Angeles
DEN Denver –7
MEX Mexico City –6
CHI Chicago
MIA Miami –5
NYC New York
CCS*1Caracas –4
YYT St John’s –3.5
RIO Rio De Janeiro –3
RAI Praia –1
City
Code City UTC Offset/ GMT Differential
LIS Lisbon 0
LON London
BCN Barcelona
+1
PAR Paris
MIL Milan
ROM Rome
BER Berlin
ATH Athens
+2
JNB Johannesburg
IST Istanbul
CAI Cairo
JRS Jerusalem
MOW*2Moscow +3
JED Jeddah
THR Tehran +3.5
City Code Table
L-1
City Code Table
E-43
Stopwatch
Measuring unit: 1/100 second
Measuring capacity: 23:59' 59.99"
Measuring modes: Elapsed time, split time, two finishes
Illumination: EL (electro-luminescent panel); Selectable illumination duration
Other: Button operation tone on/off, Flash Alert
Battery: One lithium battery (Type: CR2025)
Approximately 10 years on type CR2025 (Assuming 1.5 seconds of illumination per
day and 10 seconds of alarm operation per day)
Frequent use of the light shortens the battery life.
E-42
Specifications
Accuracy at normal temperature: ± 15 seconds a month
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: UTC Offset; Daylight Saving Time (summer time)/Standard Time
World Time: 48 cities (29 time zones)
Other: Daylight Saving Time/Standard Time
Alarms: 3 multi-function* alarms (with one snooze alarm); Hourly Time Signal
* Alarm type: Daily alarm, date alarm, 1-month alarm, monthly alarm
Countdown Timer
Measuring unit: 1 second
Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Other: Auto-repeat timing; Progress beeper
E-41
xUnder certain conditions, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
xYou 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.
E-40
Auto light switch precautions
xAvoid wearing the watch on the inside of your wrist. Doing so causes the auto light
switch to operate when it is not needed, which shortens battery life. If you want to
wear the watch on the inside of your wrist, turn off the auto light switch feature.
xIllumination 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.
xIllumination turns off after the preset illumination duration
(see “To specify the illumination duration” (page E-31)), even if
you keep the watch pointed towards your face.
xStatic 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 you
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.