CASIO QW-3151 GPS Tracking Watch User Guide

Use D and B to navigate through settings: seconds, DST, UTC
differential, hour, minutes, day, month, year.
When the setting you want to change is flashing, use D and B to
adjust it accordingly.

Daylight Saving Time (DST) Setting:

In Timekeeping Mode, press and hold A until seconds flash.
Press C to access DST setting screen.

Toggle between DST (ON) and Standard Time (OFF) using D.
Press A twice to confirm and exit the setting.

Configuring Home Site Data:

In Timekeeping Mode, hold down A until longitude flashes.
Press C to set UTC differential.

Use A to set longitude value.
Navigate through settings using C for longitude value and
lunitidal interval.

Tide/Moon Data Mode:

In this mode, press A to switch between Tide Data screen and
Moon Data screen. It displays moon phase indicator and tide
graph.

Frequently Asked Questions (FAQ)

Q: Why is it important to configure Home Site data?

A: Proper configuration ensures accurate display of moon phase,
tide graph data, and Tide/Moon Data Mode data.

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MO0803-EA
Operation Guide 3151

Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to read this manual carefully.
Warning! · The measurement functions built into this watch are not intended for use in taking
measurements that require professional or industrial precision. Values produced by this watch should be considered as reasonably accurate representations only. · The longitude, lunitidal interval, Moon phase indicator and tide graph data that appear on the display of this watch are not intended for navigation purposes. Always use proper instruments and resources to obtain data for navigation purposes. · This watch is not an instrument for calculating low tide and high tide times. The tide graph of this watch is intended to provide a reasonable approximation of tidal movements only. · CASIO COMPUTER CO., LTD. assumes no responsibility for any loss, or any claims by third parties that may arise through the use of this watch.

General Guide
· Press C to change from mode to mode. · In any mode (except when a setting screen is on the display), press B to illuminate
the display.

Timekeeping Mode

Press C.

About This Manual

· Button operations are indicated using the letters shown in the illustration.
· Each 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.

Tide/Moon Data Mode

World Time Mode

Alarm Mode

Countdown Timer Mode

Stopwatch Mode

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Timekeeping

Moon phase indicator Day of week Tide graph

Use the Timekeeping Mode to set and view the current time and date. · The tide graph shows tidal movements for the current
date in accordance with the current time as kept in the Timekeeping Mode. · The Moon phase indicator shows the current Moon phase in accordance with the current date as kept in the Timekeeping Mode.

Important! · Be sure to configure the current time and date, and your PM indicator Month Day Home Site data (data for the site where you use the
watch) correctly before using the functions of this watch. Hour : Minutes Seconds See “Home Site Data” for more information.

Setting the Time and Date
This watch is preset with UTC differential values that represent each time zone around the globe. Before setting the time, be sure to set the UTC differential for your Home Site first, which is the location where you normally will be using the watch. · Note that World Time Mode times are all displayed based on the time and date
settings you configure in the Timekeeping Mode.

To set the time and date llll
Seconds

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1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen. · Be sure to configure the correct UTC differential for your Home Site before configuring any other Timekeeping Mode settings. · See the “UTC Differential/City Code List” for information about the UTC differential settings that are supported.

2. Press C to move the flashing in the sequence shown below to select other settings.

Seconds DST Flash Alert

UTC Differential

Hour

Minutes

Day

Month

Year

3. When the setting you want to change is flashing, use D and B to change it as described below.

Screen

To do this: Reset the seconds to 00

Do this: Press D.

Toggle between Daylight Saving Time (ON) and Standard Time (OFF)
Specify the UTC differential

Press D. Use D (+) and B ().

Change the hour or minutes

Use D (+) and B ().

Change the year, month or day Use D (+) and B ().

· See “Daylight Saving Time (DST) Setting” below for details about the DST setting. · The UTC differential setting range is 12.0 to +14.0, in 0.5-hour units. · When DST is turned on, the UTC differential setting range is 11.0 to +15.0, in
0.5-hour units. · For information about Flash Alert, see “Flash Alert”. 4. Press A twice to exit the setting screen. · The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.

To toggle between 12-hour and 24-hour timekeeping In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and 24hour timekeeping. · With 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. · With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator. · The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.

Daylight Saving Time (DST) Setting 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.

To toggle the Timekeeping Mode time between DST and Standard Time

1.In the Timekeeping Mode, hold down A until the

On/Off status

seconds start to flash, which indicates the setting

screen.

2. Press C once and the DST setting screen appears.

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3. Press D to toggle between Daylight Saving Time (ON

displayed) and Standard Time (OFF displayed).

4. Press A twice to exit the setting screen.

· The DST indicator appears on the Timekeeping, and

Tide/Moon Data screens to indicate that Daylight Saving

DST indicator Time is turned on. In the case of the Tide/Moon Data

Mode, the DST indicator appears on the Tide Data

screen only.

Home Site Data
Moon phase, tide graph data, and Tide/Moon Data Mode data will not be displayed properly unless Home Site data (UTC differential, longitude and lunitidal interval) is configured correctly.
· The UTC differential indicates the time differential with Greenwich, England. · The 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. · The lunitidal interval is the time elapsing between the Moon’s transit over a meridian and the next high tide at that meridian. See “Lunitidal Interval” for more information. · This watch displays lunitidal intervals in terms of hours and minutes. · The “Site/Lunitidal Interval Data List” provides UTC differential and longitude information around the world. · The following is the initial factory default Home Site data (Tokyo, Japan) when you first purchase the watch and whenever you have the battery replaced. Change these settings to match the area where you normally use the watch. UTC differential (+9.0); Longitude (East 140 degrees); Lunitidal interval (5 hours, 20 minutes)

To configure Home Site data

1. In the Timekeeping Mode, hold down A until the Longitude (East/West) seconds start to flash, which indicates the setting

screen.

2. Press C twice to display the UTC differential setting

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screen, and confirm that the setting is correct. · If the UTC differential setting is not correct, use D (+)

and B () to change it.

3. Press A to display the longitude value setting screen.

Longitude value

4. Press C to move the flashing in the sequence shown below to select other settings.

Longitude Value

Longitude (East/West)

Lunitidal Interval Lunitidal Interval

Hours

Minutes

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Operation Guide 3151

5. While the setting you want to change is flashing, use D and B to change it as described below.

Setting Longitude Value
Longitude (East/West)

Screen

Button Operations
Use D (+) and B () to change the setting. · You can specify a value from 0° to 180°, in 1-
degree units.
Use D to switch between east longitude ( ) and west longitude ( ).

Lunitidal Interval Hours, Minutes

Use D (+) and B () to change the setting.

6. Press A to exit the setting screen.

Tide/Moon Data
Moon phase indicator Tide graph
Month Day Time

Tide/Moon data lets you view the Moon age and the Moon phase for a particular date, and tidal movements for a particular date and time for your Home Site. · When you enter the Tide/Moon Data Mode, the data for
6:00 a.m. on the current date appears first. · If you suspect that the Tide/Moon data is not correct for
some reason, check the Timekeeping Mode data (current time, date, and Home Site settings), and make changes as required. · See “Moon Phase Indicator” for information about the Moon phase indicator and “Tide Graph” for information about the tide graph. · All of the operations in this section are performed in the Tide/Moon Data Mode, which you enter by pressing C.

Tide/Moon Data Screens In the Tide/Moon Data Mode, press A to toggle between the Tide Data screen and the Moon Data screen.

Tide Data Screen Month Day
Tide graph

Moon Data Screen Moon phase indicator

Press A.

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Time

Moon age

· While the Tide Data screen is displayed, press D to advance to the next hour. · While the Moon Data screen is displayed, press D to advance to the next day. · You also can specify a particular date (year, month, day) to view its tide data and
Moon data. See “To specify a date” for more information. · When you enter the Tide/Moon Data Mode, the screen (tide data or Moon data) that
was displayed the last time you exited the mode appears first.

To specify a date Year Month Day
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1. In the Tide/Moon Data Mode, hold down A until the year setting starts to flash, which indicates the setting screen.
2. Press C to move the flashing in the sequence shown below to select the other settings.

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Year

Month

Day

3. While a setting is flashing, use D (+) or B () to change it.
· You can specify a date in the range of January 1, 2000 to December 31, 2099. 4. Press A to exit the setting screen. 5. Use A to display either the Tide Data screen or the Moon Data screen.

World Time

City code
Current time in selected city

World Time shows the current time in 48 cities (29 time zones) around the world. · The times kept in the World Time Mode are
synchronized with the time being kept in the Timekeeping Mode. If you feel that there is an error in any World Time Mode time, check the UTC differential of your Home Site Data (Home City) and the current setting of the Timekeeping Mode time. · Select a city code in the World Time Mode to display the current time in any particular time zone around the globe. See the “UTC Differential/City Code List” for information about the UTC differential settings that are supported. · All of the operations in this section are performed in the World Time Mode, which you enter by pressing C.

To view the time in another city While in the World Time Mode, press D to scroll eastwardly through the city codes
(time zones).

To toggle a city code time between Standard Time and Daylight Saving Time

1. In the World Time Mode, use D to display the city code

(time zone) whose Standard Time/Daylight Saving Time

setting you want to change.

2. Hold down A to toggle between Daylight Saving Time

(DST indicator displayed) and Standard Time (DST

indicator not displayed).

· The DST indicator is shown on the World Time Mode

DST indicator

screen while Daylight Saving Time is turned on.

· Note that changing the Daylight Saving Time for any city

code causes the setting to be applied to all city codes.

Stopwatch

1/100 second
Hours Seconds Minutes

The stopwatch lets you measure elapsed time, split times, and two finishes. It also includes Auto-Start. · The display range of the stopwatch is 23 hours, 59
minutes, 59.99 seconds. · The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it. · The stopwatch measurement operation continues even
if you exit the Stopwatch Mode. · Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to elapsed time measurement. · All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C.

To measure times with the stopwatch

Elapsed Time

D Start

D Stop

D Re-start

D Stop

A Clear

Split Time D Start
Two Finishes D Start

A Split (SPL displayed)
A Split First runner finishes. Display time of first runner.

A Split release
D Stop Second runner finishes.

D Stop
A Split release Display time of second runner.

A Clear
A Clear

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.
· This displays a 5-second countdown screen. · To return to the all zeros screen, press A again. 2. Press D to start the countdown.
· When the countdown reaches zero, a tone sounds and a stopwatch timing operation starts automatically.
· Pressing D while the Auto-Start countdown is in progress will start the stopwatch immediately.

Countdown Timer

You can set the countdown timer 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. · All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing C.

Hours Seconds Minutes

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 · See “To configure the countdown timer” for information
about setting up the timer.

Auto-repeat
When auto-repeat is turned on, the countdown restarts automatically from the countdown start time when it reaches zero. If left running, the countdown is repeated a total of eight times, after which it stops automatically. When auto-repeat is turned off, the countdown stops when it reaches zero and the display shows the original countdown start time. · Pressing D while 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 A to 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.

Countdown End Beeper
The countdown end beeper lets you know when the countdown reaches zero. · When the progress beeper is turned off, the countdown end beeper sounds for
about 10 seconds, or until you press any button to stop it. · When 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. · Starting from five minutes before the end of the countdown, the watch emits four
short beeps at the top of each countdown minute. · 30 seconds before the end of the countdown, the watch emits four short beeps. · The watch emits a short beep for each of the last 10 seconds of the countdown. · If 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.

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Operation Guide 3151

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To configure the countdown timer

1. While the countdown start time is on the display in the

Countdown Timer Mode, hold down A until the current

countdown start time starts to flash, which indicates the

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setting screen. · If the countdown start time is not displayed, use the

procedure under “To use the countdown timer” to

display it.

2. Press C to move the flashing in the sequence shown

below to select other settings.

Hours

Minutes

Progress Beeper

Auto-repeat

3. When the setting you want to change is flashing, use B and D to change it as described below.

Setting Hours, Minutes

Screen

Button Operation Use D (+) and B () to change the setting.

Auto-repeat Progress Beeper

Press D to toggle auto-repeat on (

displayed) and off (

displayed).

Press D to toggle the progress beeper on ( ) and off ( ).

· To specify a countdown start time of 24 hours, set . 4. Press A to exit the setting screen. · You also can perform steps 1 and 2 of the above procedure whenever you need to
view the current auto-repeat and progress beeper settings.
To use the countdown timer Press D while in the Countdown Timer Mode to start the countdown timer. · The countdown timer operation continues even if you exit the Countdown Timer Mode. · Press D while a countdown operation is in progress to pause it. Press D again to resume the countdown. · To stop a countdown operation completely, first pause it (by pressing D), and then press A. This returns the countdown time to its starting value.

Alarms

Alarm number

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, while the

other two are one-time alarms.

You also can turn on an Hourly Time Signal that causes

the watch to beep twice every hour on the hour.

· There are three alarm screens numbered AL1and

AL2 for the one-time alarm, a snooze alarm screen

Alarm date

indicated by SNZ. The Hourly Time Signal screen is

(Month Day) indicated by SIG.

Alarm time (Hour : Minutes)

· All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.

Alarm Types The alarm type is determined by the settings you make, as described below.

· Daily 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.
· Date 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.

· 1-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.

· Monthly 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.

To set an alarm time

1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.

· To set a one-time alarm, display an alarm screen AL1or AL2. To set the snooze alarm, display the SNZ screen.
· The snooze alarm repeats every five minutes. 2. After you select an alarm, hold down A until the hour setting of the alarm time
starts to flash, which indicates the setting screen. · This operation turns on the alarm automatically. 3. Press C to move the flashing in the sequence shown below to select other settings.

Hour

Minutes

Month

Day

4. While a setting is flashing, use D and B to change it as described below.

Screen

To do this:

Do this:

Change the hour Use D (+) and B ().

and minutes

·With the 12-hour format, set the time correctly as

a.m. or p.m. (P indicator).

Change the month and day

·To set an alarm that does not include a month and/ or day, set for each setting.

5. Press A to exit the setting screen.

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. · Alarm and Hourly Time Signal operations are performed in accordance with the
Timekeeping Mode time. · To stop the alarm tone after it starts to sound, press any button. · Performing 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 Displaying the SNZ setting screen

To test the alarm In the Alarm Mode, hold down D to sound the alarm.

To turn an alarm on and off

1. In the Alarm Mode, use D to select an alarm.

2. Press A to toggle it on and off.

· Turning on a alarm (AL1, AL2, or SNZ) displays the

alarm on indicator on its Alarm Mode screen.

· In all modes, the alarm on indicator is shown for any

alarm that is currently turned on.

· The alarm on indicator flashes while the alarm is

sounding.

Snooze alarm · The snooze alarm indicator flashes while the snooze

indicator

alarm is sounding and during the 5-minute intervals

Alarm on indicator

between alarms.

To turn the Hourly Time Signal on and off 1. In the Alarm Mode, use D to select the Hourly Time
Signal (SIG). 2. Press A to toggle it on and off.
· The Hourly Time Signal on indicator is shown on the display in all modes while this function is turned on.

Hourly time signal on indicator

Illumination

Auto light switch indicator

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 towards your face. · The auto light switch must be turned on (indicated by
the auto light switch indicator) for it to operate. · See “Illumination Precautions” for other important
information about using illumination.
To illuminate the display manually In any mode, press B to turn on illumination. · The above operation turns on illumination regardless of
the current auto light switch setting.

· You 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 A until the

seconds start to flash, which indicates the setting

screen.

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2. While the seconds are flashing, press B to toggle the

setting between 1.5 seconds ( ) and 3 seconds ( ).

3. Press A twice to exit the setting screen.

About the Auto Light Switch Turning on the auto light switch causes illumination to 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. · Wear the watch on the outside of your wrist.

Parallel to ground

More than 40°

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 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 B for about three seconds to toggle the auto light switch on (auto light switch indicator displayed) and off (auto light switch indicator not displayed). · The auto light switch indicator remains in all modes while the auto light switch is
turned on. · In order to protect against running down the battery, the auto light switch will turn off
automatically approximately six hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want.
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Operation Guide 3151

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.
Moon Phase Indicator The Moon phase indicator of this watch indicates the current phase of the Moon as shown below.
Moon phase indicator

(part you cannot see)

Moon phase (part you can see)

Moon Phase Indicator Moon Age
Moon Phase

0.0 27.7

–

1.8 29.5

1.9

–

5.5

5.6 – 9.2

9.3 – 12.9

13.0-16.6 16.7-20.2

20.3 – 23.9 24.0 – 27.6

New Moon

First Quarter (Waxing)

Full Moon

Last Quarter (Waning)

· The Moon phase indicator shows the Moon as viewed at noon from a position in the Northern Hemisphere looking south. Note that at times the image shown by the Moon phase indicator may differ from that of the actual Moon in your area.
· The left-right orientation of the Moon phase is reversed when viewing from the Southern Hemisphere or from a point near the equator.
Moon Phases and Moon Age The Moon goes through a regular 29.53-day cycle. During each cycle, the Moon appears to wax and wane as the relative positioning of the Earth, Moon, and Sun changes. The greater the angular distance between the Moon and the Sun,* the more we see illuminated. * The angle to the Moon in relation to the direction at which the Sun is visible from the Earth. This watch performs a rough calculation of the current Moon age starting from day 0 of the moon age cycle. Since this watch performs calculations using integer values only (no fractions), the margin for error of the displayed Moon age is ± 1 day.
Tide Graph The Tide Graph has six graphic segments, each of which indicates a different tide level. The current tide level is indicated by the displayed graphic segment.

High Tide

Low Tide

(Rising

(Falling

(Rising

Tide)

Tidal Movements Tides are the periodic rise and fall of the water of oceans, seas, bays, and other bodies of water caused mainly by the gravitational interactions between the Earth, Moon and Sun. Tides rise and fall about every six hours. The tide graph of this watch indicates tidal movement based on the Moon’s transit over a meridian and the lunitidal interval. The lunitidal interval differs according to your current location, so you must specify a lunitidal interval in order to obtain the correct tide graph readings. The tide graph displayed by this watch is based on the current Moon age. Remember that the margin for error of the Moon age displayed by this watch is ± 1 day. The greater the error in a particular Moon age, the greater the error in the resulting tide graph.
Lunitidal Interval Theoretically, high tide is at the Moon’s transit over the meridian and low tide is about six hours later. Actual high tide occurs somewhat later, due to factors such as viscosity, friction, and underwater topography. Both the time differential between the Moon’s transit over the meridian until high tide and the time differential between the Moon’s transit over the meridian until low tide are known as the “lunitidal interval”. When setting the lunitidal interval for this watch, use the time differential between the Moon’s transit over the meridian until high tide.
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.

To turn Flash Alert on and off

1. In the Timekeeping Mode, hold down A for about two

seconds until the current time flashes on the display.

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This is the setting screen. 2. Press C eight times to display the Flash Alert setting

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screen.

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3. Press D to toggle Flash Alert on (

displayed) and

off (

displayed).

4. Press A twice to exit the setting screen.

· The Flash Alert setting you select with the above

procedure is applied in all modes.

· When Flash Alert is on,

appears on the

timekeeping screen for about one second whenever you

enter the Stopwatch, Countdown Timer, or Alarm Mode.

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. · Even if you turn off the button operation tone, the
alarms, the Hourly Time Signal, the countdown alarm, and stopwatch auto start all operate normally.

Mute indicator

To turn the button operation tone on and off In any mode (except when a setting screen is on the display), hold down C to toggle the button operation tone on (mute indicator not displayed) and off (mute indicator displayed).

· Holding down C to turn the button operation tone on or off also causes the watch’s current mode to change.
· The mute indicator is displayed in all modes when the button operation tone is turned off.

Auto Return Features
· If you leave the watch in the Alarm Mode or Tide/Moon Data Mode for two or three minutes without performing any operation, it changes to the Timekeeping Mode automatically.
· If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch exits the setting screen automatically.

Scrolling The B and D buttons 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.

Timekeeping
· Resetting the seconds to 00 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 00 without changing the minutes.
· The year can be set in the range of 2000 to 2099. · 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.

World Time
· The seconds count of the World Time is synchronized with the seconds count of the Timekeeping Mode.
· All World Time Mode times are calculated from the current time in the Timekeeping Mode using UTC time differential values.
· The UTC differential is a value that indicates the time difference between a reference point in Greenwich, England and the time zone where a city is located.
· The 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
· The electro-luminescent panel that provides illumination loses power after very long use.
· Illumination may be hard to see when viewed under direct sunlight. · The 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. · Illumination turns off automatically whenever an alarm sounds. · Frequent use of illumination runs down the battery.

Auto light switch precautions · Avoid 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.

More than 15 degrees too high

· 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 in about 1.5 seconds or 3 seconds, 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 toward 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.
· Under 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.
· 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.

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Operation Guide 3151

UTC Differential/City Code List

City Code PPG HNL ANC YVR SFO LAX DEN MEX CHI MIA NYC CCS YYT RIO
RAI LIS LON
BCN PAR MIL ROM BER ATH JNB IST CAI JRS MOW JED THR DXB KBL KHI MLE DEL

City
Pago Pago Honolulu Anchorage Vancouver San Francisco Los Angeles Denver Mexico City Chicago
Miami New York Caracas St. Johns Rio De Janeiro
Praia Lisbon London
Barcelona Paris Milan Rome Berlin Athens
Johannesburg Istanbul Cairo
Jerusalem Moscow Jeddah Tehran
Dubai Kabul Karachi Male Delhi

UTC Differential
11.0
10.0 09.0

Other major cities in same time zone
Papeete Nome

08.0 Las Vegas, Seattle/Tacoma, Dawson City

07.0
06.0
05.0 04.0 03.5 03.0 01.0
+00.0

Edmonton, El Paso Houston, Dallas/Fort Worth, New Orleans, Winnipeg Montreal, Detroit, Boston, Panama City, Havana, Lima, Bogota La Paz, Santiago, Port Of Spain
Sao Paulo, Buenos Aires, Brasilia, Montevideo
Dublin, Casablanca, Dakar, Abidjan

+01.0

Amsterdam, Algiers, Hamburg, Frankfurt, Vienna, Madrid, Stockholm

+02.0 Helsinki, Beirut, Damascus, Cape Town

+03.0
+03.5 +04.0 +04.5
+05.0
+05.5

Kuwait, Riyadh, Aden, Addis Ababa, Nairobi Shiraz Abu Dhabi, Muscat
Mumbai, Kolkata, Colombo

DAC RGN BKK SIN HKG BJS SEL TYO ADL GUM SYD NOU WLG

Dhaka Yangon Bangkok Singapore Hong Kong Beijing Seoul Tokyo Adelaide Guam Sydney Noumea Wellington

+06.0 +06.5 +07.0
+08.0
+09.0 +09.5 +10.0 +11.0 +12.0

Phnom Penh, Hanoi, Vientiane, Jakarta
Kuala Lumpur, Taipei, Manila, Perth, Ulaanbaatar
Pyongyang Darwin Melbourne, Rabaul Port Vila Christchurch, Nadi, Nauru Island

· Based on data as of June 2007.

Site/Lunitidal Interval Data List

Site
Anchorage Bahamas Baja, California Bangkok Boston Buenos Aires Casablanca Christmas Island Dakar Gold Coast Great Barrier Reef, Cairns Guam Hamburg Hong Kong Honolulu Jakarta Jeddah Karachi Kona, Hawaii Lima Lisbon London Los Angeles Maldives Manila Mauritius Melbourne Miami Noumea Pago Pago Palau Panama City Papeete Rio De Janeiro Seattle Shanghai Singapore Sydney Tokyo Vancouver Wellington
·Based on data as of 2003.

UTC Differential

Standard

DST/

Time

Summer Time

9.0

8.0

5.0 7.0

4.0 6.0

+7.0

+8.0

5.0

4.0

3.0

2.0

+0.0

+1.0

+14.0 +0.0

+15.0 +1.0

+10.0

+11.0

+10.0

+11.0

+10.0

+11.0

+1.0

+2.0

+8.0

+9.0

10.0

9.0

+7.0

+8.0

+3.0

+4.0

+5.0

+6.0

10.0

9.0

5.0 +0.0

4.0 +1.0

+0.0

+1.0

8.0

7.0

+5.0

+6.0

+8.0

+9.0

+4.0 +10.0

+5.0 +11.0

5.0

4.0

+11.0

+12.0

11.0

10.0

+9.0

+10.0

5.0 10.0

4.0 9.0

3.0

2.0

8.0

7.0

+8.0

+9.0

+8.0

+9.0

+10.0 +9.0

+11.0 +10.0

8.0

7.0

+12.0

+13.0

Longitude
149°W 77°W
110°W 101°E
71°W 58°W
8°W 158°W
17°W 154°E 146°E 145°E
10°E 114°E 158°W 107°E
39°E 67°E 156°W 77°W
9°W 0°E 118°W 74°E 121°E 57°E 145°E 80°W 166°E 171°W 135°E 80°W 150°W 43°W 122°W 121°E 104°E 151°E 140°E 123°W 175°E

Lunitidal Interval
5:40 7:30 8:40 4:40 11:20 6:00 1:30 4:00 7:40 8:30 9:40 7:40 4:50 9:10 3:40 0:00 6:30 10:10 4:00 5:20 2:00 1:10 9:20 0:10 10:30 0:50 2:10 7:30 8:30 6:40 7:30 3:00 0:10 3:10 4:20 1:20 10:20 8:40 5:20 5:10 4:50

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Documents / Resources

CASIO QW-3151 GPS Tracking Watch [pdf] User Guide
QW-3151, QW-3151 GPS Tracking Watch, GPS Tracking Watch, Tracking Watch

References

User Manual

CASIO QW-3151 GPS Tracking Watch User Guide

QW-3151 GPS Tracking Watch

Product Information

Specifications:

Product Usage Instructions

Getting Acquainted:

Timekeeping Mode:

Setting the Time and Date:

Daylight Saving Time (DST) Setting:

Configuring Home Site Data:

Tide/Moon Data Mode:

Frequently Asked Questions (FAQ)

Q: Why is it important to configure Home Site data?

Documents / Resources

References

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