Watch Operation Guide 5734

Contents

• Precautions: Operating Precautions, User Maintenance, Battery Replacement, Mobile Link Precautions
• Before Getting Started...: General Guide, Watch Face and Display Indicators, Navigating Between Modes, Cycling Between Timekeeping Mode Digital Display Contents, Shifting Hands to Read the Digital Display, Viewing the Face in the Dark, Useful Features, Linking with a Phone, Getting Ready
• Time Adjustment: Using Watch Operations to Adjust the Time Setting, Using the Watch in a Medical Facility or Aircraft
• World Time: Using CASIO WATCHES to Configure World Time City Settings, Checking World Time, Setting the World Time City, Swapping Your Home Time and World Time
• Alarm: Using CASIO WATCHES to Configure Alarm Settings, Configuring Alarm Settings, Enabling the Hourly Time Signal, Turning Off an Alarm or the Hourly Time Signal
• Moving to Another Time Zone
• Stopwatch: Measuring Elapsed Time, Measuring a Split Time, Timing the First and Second Place Finishers
• Timer: Using CASIO WATCHES to Configure Timer Settings, Setting the Countdown Start Time, Using the Timer
• Hand Alignment Adjustment: Using CASIO WATCHES to Adjust Hand Alignment, Adjusting Hand Alignment
• Other Settings: Specifying the Day of the Week Language, Enabling the Button Operation Tone, Resetting Watch Settings
• Other Information: City Table, Summer Time Table, Supported Phones, Specifications, Copyrights and Registered Copyrights
• Troubleshooting

Precautions

Operating Precautions

Water Resistance

Information applies to watches with WATER RESIST or WATER RESISTANT marked on the back cover.

Water Resistance Under Daily Use

Enhanced Water Resistance Under Daily Use (5 Atmospheres)

10 Atmospheres

20 Atmospheres

Do not use your watch for scuba diving or other types of diving that requires air tanks.

Watches without WATER RESIST or WATER RESISTANT markings are not protected against sweat. Avoid exposure to large amounts of sweat or moisture, or direct splashing.

Even if water-resistant, avoid operating the crown or buttons while wet. Do not wear the watch in a bath, heated swimming pool, sauna, or high temperature/humidity environments. Avoid wearing while washing hands/face, doing housework, or tasks involving soaps/detergents.

After submersion in seawater, rinse with plain water to remove salt and dirt.

To maintain water resistance, have gaskets replaced periodically (every 2-3 years). A technician will check water resistance during battery replacement. Use only specified battery types.

Some water-resistant watches have leather bands. Avoid swimming or washing with leather bands exposed to water.

The inside surface of the watch glass may fog due to sudden temperature drops. Fogging that clears quickly is normal. Sudden, extreme temperature changes can cause longer fogging. If fogging persists or moisture is visible inside, stop using the watch and take it to a service center.

Your water-resistant watch has been tested according to International Organization for Standardization regulations.

Band

Do not fasten the band too tightly to avoid skin irritation from sweat. Ensure enough room to insert a finger between the band and wrist.

Deterioration, rust, or other conditions can cause the band to break or come off, potentially leading to loss of the watch or personal injury. Take good care of your band and keep it clean.

Immediately stop using a band if you notice loss of flexibility, cracks, discoloration, looseness, or any abnormality. Seek inspection and repair from a retailer or CASIO service center.

Temperature

Never leave your watch in locations with very high or very low temperatures (e.g., car dashboard, near a heater). Temperature extremes can cause time loss/gain, stopping, or malfunction. LCD may become difficult to read at temperatures below 0°C (32°F) and above +40°C (104°F). Prolonged exposure to temperatures above +60°C (140°F) can cause LCD problems.

Impact

The watch is designed for normal daily use and light activity. Strong impacts (dropping) can cause malfunction. Shock-resistant models (G-SHOCK, BABY-G, G-MS) are suitable for activities like operating a chain saw or strenuous sports.

Magnetism

Magnetic force moves analog and combination watch hands. Proximity to strong magnetic sources (speakers, necklaces, cell phones) can cause timekeeping to slow down, speed up, or stop, leading to incorrect time display. Avoid very strong magnetism (e.g., medical equipment) as it can cause malfunction and damage electronic components.

Electrostatic Charge

Exposure to strong electrostatic charge can cause incorrect time display or damage electronic components. It may also cause temporary blotching in blank LCD areas.

Chemicals

Avoid contact with thinners, gasoline, solvents, oils, cleaners, adhesives, paints, medicines, or cosmetics containing these. Contact can cause discoloration or damage to resin, leather, and other parts.

Storage

If not using the watch for a long time, wipe it clean of dirt, sweat, and moisture, and store in a cool, dry place.

Resin Components

Storing wet resin components in contact with other items can cause color transfer. Dry the watch thoroughly before storing and ensure it's not in contact with other items.

Exposure to direct sunlight (UV rays) or prolonged dirt accumulation can cause discoloration. Friction from external force, rubbing, or impact can also cause discoloration of painted components or printed band figures. Leaving the watch wet can cause fluorescent colors to fade; wipe dry promptly.

Semi-transparent resin parts can discolor from sweat, dirt, high temperatures, and humidity. Daily use and long-term storage can lead to deterioration, breaking, or bending of resin components, depending on usage and storage conditions.

Leather Band

Avoid contact with other items while wet to prevent color transfer. Dry thoroughly with a soft cloth before storing and ensure no contact with other items.

Prolonged exposure to direct sunlight (UV rays) or failure to clean dirt can cause discoloration. Rubbing or dirt can cause color transfer and discoloration.

Metal Components

Failure to clean metal components can lead to rust, even for stainless steel or plated parts. Wipe metal components exposed to sweat or water with a soft, absorbent cloth and place in a well-ventilated area to dry.

Use a soft toothbrush and a mild neutral detergent solution or soapy water to clean metal parts. Rinse thoroughly and wipe dry. Wrap the watch case with plastic wrap to prevent contact with detergent or soap.

User Maintenance

Caring for Your Watch

Keep your watch clean by frequently wiping with a soft cloth to remove dirt, sweat, water, and foreign matter. This ensures optimal performance.

Rinse the watch with clean fresh water after exposure to seawater or mud.

For metal bands or resin bands with metal parts, use a soft toothbrush and a mild neutral detergent solution or soapy water. Rinse and wipe dry. Protect the watch case with plastic wrap during washing.

For resin bands, wash with water and wipe dry. Smudges may appear on the surface but do not affect skin or clothing; wipe with a cloth to remove.

Wipe leather bands clean of water and sweat with a soft cloth.

Periodically rotate the crown and rotary bezel, and press buttons to maintain proper operation and prevent future issues.

Dangers of Poor Watch Care

Rust

Even rust-resistant steel can rust if not cleaned. Dirt prevents oxygen contact, leading to rust formation. Rust can cause sharp edges on metal components and dislodge band pins, risking watch loss or injury. Stop use and seek service if abnormalities occur.

Sweat and rust in crevices can soil clothing, cause skin irritation, and affect watch performance.

Premature Wear

Leaving sweat or water on resin bands/bezels, or storing in high moisture areas, can lead to premature wear, cuts, and breaks.

Skin Irritation

Individuals with sensitive skin or poor physical condition may experience irritation. Keep leather/resin bands clean. If rash or irritation occurs, remove the watch and consult a skin care professional.

Battery Replacement

Battery replacement should be done by an original retailer or authorized CASIO service center. Use only the specified battery type; incorrect types can cause malfunction.

Request a water resistance check during battery replacement. Ornamental resin components may wear, crack, or bend over time. If damage is noticed during battery replacement, the watch will be returned with an explanation without servicing.

Initial Batteries

Batteries included are for factory testing. Test batteries may deplete faster than rated battery life. Replacement of these batteries will be charged, even if within the warranty period.

Low Battery Power

Indicated by large timekeeping errors, dim display, or blank display. Operation with low battery can cause malfunction; replace batteries promptly.

Mobile Link Precautions

Legal Precautions

This watch complies with radio laws in various countries. Use in non-compliant areas may be a criminal offense. Visit the CASIO Website for details: https://world.casio.com/ce/BLE/

Use of this watch on aircraft is restricted by aviation laws. Follow airline personnel instructions.

Precautions when using Mobile Link

Keep watch and phone close (recommended range: 2 meters). Local environment, building structure, and other factors may require a closer range.

The watch can be affected by other electronic devices, especially microwave ovens. Conversely, the watch may cause radio interference or TV video noise.

The watch's Bluetooth uses the same 2.4 GHz band as wireless LAN devices. Proximity can cause interference, slower speeds, noise, or communication failure.

Stopping Radio Wave Emission by This Watch

The watch emits radio waves when the mode hand points to the radio wave symbol [e]. It also connects to the phone automatically four times daily for time adjustment.

To stop radio wave generation in hospitals, aircraft, or areas where radio waves are not allowed, press any button to terminate the Bluetooth connection.

Disabling Auto Time Correction: Configure CASIO WATCHES phone app settings to disable synchronization.

Using the Watch in a Medical Facility or Aircraft: See relevant section.

Before Getting Started...

This section provides an overview of the watch and introduces its convenient features.

Watch Features

• Phone Linking: Supports connection and communication with a Bluetooth-capable phone.
• World Time: Displays current time in any of 38 time zones. Subject to update when connected with a phone.
• Alarm: Sounds at a specified time.
• Stopwatch: Measures elapsed time up to 24 hours (1/100 sec for the first hour, then 1 sec units).
• Timer: Counts down from a set time; alarm sounds when countdown reaches zero.

Note: Illustrations are created for explanation and may differ slightly from the actual item.

General Guide

Diagram shows watch components: (A) Hour hand, (B) Minute hand, (C) Mode hand (indicates current mode), (D) LCD.

Button functions: A button cycles displays in Timekeeping Mode. B button turns on illumination. C button cycles modes; holding for 1 second returns to Timekeeping Mode. D button changes settings on setting screens.

Watch Face and Display Indicators

Diagram illustrates watch face indicators:

• (1) Displayed during p.m. times (12-hour timekeeping).
• (2) Displayed during summer time.
• (3) Flashes when hands are shifted for easier reading.
• (4) Mode hand points to [e] when connected to phone.
• (5) Mode hand points to [AL] in Alarm Mode.
• (6) Mode hand points to [TR] in Timer Mode.
• (7) Mode hand points to [ST] in Stopwatch Mode.
• (8) Mode hand points to [WT] in World Time Mode.
• (9) Displayed in Stopwatch Mode for split times.
• (10) Displayed during Bluetooth connection.
• (11) Displayed when an alarm is on.
• (12) Displayed upon successful phone connection and time adjustment.
• (13) Displayed when hourly time signal is enabled.

Navigating Between Modes

Pressing (C) cycles through watch modes. Holding (C) for at least one second returns to the Timekeeping Mode.

Diagrams illustrate mode transitions: Timekeeping Mode, Alarm Mode, World Time Mode, Timer Mode, Stopwatch Mode.

Cycling Between Timekeeping Mode Digital Display Contents

Pressing (A) in Timekeeping Mode cycles through display information: Day of the week/date, Hours/minutes, Seconds.

Shifting Hands to Read the Digital Display

To shift hands for easier viewing:

1. Hold down (B), then press (C). Hands shift out of the way.
2. To return hands to normal position, hold down (B) and press (C) again, or press (C) to change modes.

Note: If hands remain shifted for about one hour without operation, they will automatically return to normal timekeeping position.

Viewing the Face in the Dark

Press (B) to turn on the LED illumination for the face and digital display.

Illumination turns off automatically if an alarm sounds, while hands are moving at high speed, or may flicker briefly when turning on/off.

Important: Frequent use of illumination drains the battery.

Note: Illumination is disabled during alarm, timer alerts, or other beeper sounds.

Useful Features

Pairing with a phone simplifies watch features.

Auto Time Correction

Diagram shows phone and watch for Auto Time Correction.

Selection of More Than 300 World Time Cities

Configure World Time Settings via phone app.

Phone app allows configuration of many other watch settings.

Pairing the watch with a phone is required for data transfer and settings configuration.

Linking with a Phone

Bluetooth connection (Mobile Link) allows automatic time correction and other setting changes.

Note: This function requires the CASIO WATCHES phone app to be running.

This section covers watch and phone operations, indicated by X (watch) and Y (phone).

Getting Ready

To use watch with a phone, first pair them.

1. Install the app: Search for and install the "CASIO WATCHES" app on your phone.
2. Configure Bluetooth: Enable Bluetooth on your phone.

Note: Refer to phone documentation for specific setting procedures.

Pair the watch with a phone

Before using the watch with a phone, pair them:

1. Move the phone close to the watch (within 1 meter).
2. Tap the "CASIO WATCHES" icon on the phone.
3. Tap the [+] icon on the "My Watch" tab on the phone.
4. Follow phone screen prompts to register the watch in the app.
5. On the watch, hold down (C) for at least three seconds until [CNCT] flashes. Release when the mode hand moves to [e]. [CNCT] stops flashing upon successful connection.

If pairing fails, [ERR] appears momentarily, and the watch returns to Timekeeping Mode. Repeat the pairing procedure.

Diagrams show "Pairing started" and "Pairing complete" states.

Note: The first time the CASIO WATCHES app is launched, it may ask for location information access. Allow background location access.

Auto Time Correction

The watch automatically corrects its time setting using the phone at preset times daily.

Using This Function

The watch corrects its time four times daily on a schedule. In Timekeeping Mode, it performs corrections automatically during daily activities.

Diagram shows time 12:30.

Important: Auto time correction may fail if the watch is too far from the phone, communication is blocked by interference, the phone is updating, or the CASIO WATCHES app is not running.

Note: If the time is incorrect despite a successful connection, adjust hand positions using "Adjusting Hand Alignment".

If a World Time City is set via the phone app, its time is also corrected automatically.

Auto time correction occurs around 12:30 a.m., 6:30 a.m., 12:30 p.m., and 6:30 p.m. The connection terminates automatically after correction.

Triggering Immediate Time Correction

Time settings are corrected automatically upon establishing a phone connection. To trigger correction manually:

1. Enter Timekeeping Mode.
2. Move the phone close to the watch (within 1 meter).
3. Press (D). [TIME] flashes during connection. [OK] appears upon successful correction. The watch's time setting is updated from the phone. Your current location is recorded by the phone.

Diagrams show "Trying to connect" and "After time correction" states.

Note: Connection terminates automatically after time correction. [ERR] indicates failure. [RCVD] flashes during reception and stops when complete.

Configuring World Time Settings

Setting a World Time City via the CASIO WATCHES phone app updates the watch's World Time City. Auto summer time switching can also be configured.

Configuring the Summer Time Setting

1. Tap the "CASIO WATCHES" icon on the phone.
2. Hold down (C) for at least three seconds until [CNCT] flashes. Release when the mode hand moves to [e]. [CNCT] stops flashing upon connection.

If connection fails, [ERR] appears momentarily, and the watch returns to Timekeeping Mode. Diagrams show "Trying to connect" and "Connected" states.

Note: The CASIO WATCHES phone app offers approximately 300 World Time cities. User-defined cities can also be configured via the app.

To select a World Time City

1. Tap the "CASIO WATCHES" icon.
2. Hold down (C) for at least three seconds until [CNCT] flashes. Release when the mode hand moves to [e]. [CNCT] stops flashing upon connection.

If connection fails, [ERR] appears momentarily, and the watch returns to Timekeeping Mode. Diagrams show "Trying to connect" and "Connected" states.

3. Follow phone screen prompts to select a summer time setting: "Auto" (automatic switching), "OFF" (standard time only), or "ON" (summer time only).

Note: "Auto" setting handles summer time switching automatically. You do not need manual changes. "Auto" can be used even in areas without summer time.

Swapping Your World Time and Home Time

In World Time mode, press (A) and (B) simultaneously to swap Home City time with World Time.

Diagrams illustrate "Before swapping" and "After swapping" states, showing Home City Time and World Time.

Note: This is useful for moving to another time zone. Refer to "Moving to Another Time Zone" section.

Adjusting Hand Alignment

Strong magnetism or impact can cause analog hands to misalign with the digital display. Adjust hand alignment if this occurs.

Using CASIO WATCHES to Adjust Hand Alignment

Pairing with a phone allows hand alignment adjustment via the CASIO WATCHES app. Refer to "Adjusting Hand Alignment".

Adjusting Hand Alignment

1. Enter Timekeeping Mode.
2. Hold down (A) for at least five seconds until [SUB] flashes, enabling mode hand alignment adjustment.
3. If the mode hand is not pointing to [e], use (B) and (D) to align it with [e]. Diagrams show hand positions after 3.5 and 5 seconds.
4. Press (C) to enable hour and minute hand adjustment.
5. If hour and minute hands are not at 12 o'clock, use (B) and (D) to align them.
6. Press (A) to exit.

Note: During hand alignment, the watch automatically returns to Timekeeping Mode after 2-3 minutes of inactivity.

Other Settings

Specifying the Day of the Week Language

Select one of six languages for the day of the week display in Timekeeping Mode.

1. Enter Timekeeping Mode.
2. Hold down (A) for at least two seconds until the current Home City name is displayed. This is the setting mode; hands shift out of the way.
3. Press (C) nine times until the language setting flashes.
4. Use (D) to select a language: [ENG] (English), [ESP] (Spanish), [FRA] (French), [DEU] (German), [ITA] (Italian), [PyC] (Russian).
5. Press (A) to exit.

Note: While setting, the watch exits automatically after 2-3 minutes of inactivity.

Enabling the Button Operation Tone

Enable or disable the tone that sounds when a button is pressed.

1. Enter Timekeeping Mode.
2. Hold down (A) for at least two seconds until the current Home City name is displayed. This is the setting mode; hands shift out of the way.
3. Press (C) 10 times until [KEY] or [MUTE] flashes.
4. Use (D) to select [KEY] (tone enabled) or [MUTE] (tone muted).
5. Press (A) to exit.

Note: Setting exits automatically after 2-3 minutes of inactivity. Alarm and timer tones still sound even when operation tone is muted.

Resetting Watch Settings

Return watch settings (Watch Settings, Stopwatch, Timer, Alarm) to factory defaults.

1. Enter Timekeeping Mode.
2. Hold down (A) for at least two seconds until the current Home City name is displayed. This is the setting mode; hands shift out of the way.
3. Press (C) twice until seconds flash.
4. Hold down (B) for at least six seconds until [ALL] and [RESET] alternate. Release when only [RESET] is displayed.
5. Press (A) to exit.

Note: Setting exits automatically after 2-3 minutes of inactivity. Resetting also deletes phone pairing information.

Other Information

City Table

The information in the table is current as of July 2024. Time zones and UTC differentials may change; connect to a phone to update time zone information.

Summer Time Table

When [AUTO] is selected for a city observing summer time, switching between standard and summer time occurs automatically as per the table. Note that local summer time dates may differ; connect to a phone for updates or change settings manually.

The information in the table is current as of January 2022.

Supported Phones

For information on compatible phones, visit the CASIO website: https://world.casio.com/os_mobile/wat/

Specifications

Accuracy: ±15 seconds per month (without phone time correction).

Timekeeping:

• Analog: Hour, minute (moves every 20 seconds).
• Digital: Hour, minute, second, day, day of week, AM/PM (P)/24-hour format, Full Auto Calendar (2000-2099).
• Summer Time.

World Time: 38 cities (38 time zones) and UTC. Includes summer time and Home City/World Time swapping.

Stopwatch:

• Measurement unit: 1/100 second (first hour), 1 second (after first hour).
• Measuring range: 23 hours 59 minutes 59 seconds.
• Functions: Elapsed time, split times, 1st and 2nd place finisher times.

Timer:

• Measuring unit: 1 second.
• Countdown range: 24 hours.
• Setting unit: 1 second.
• 10-second beeper upon countdown completion.

Alarm:

• Time alarm: 5 alarms.
• Setting units: Hours, minutes.
• Alarm tone duration: 10 seconds.
• Hourly time signal: Beeps every hour.

Copyrights and Registered Copyrights

Bluetooth® word mark and logos are registered trademarks of Bluetooth SIG, Inc., licensed to CASIO Computer Co., Ltd.

iPhone and App Store are trademarks of Apple Inc.

iOS is a trademark of Cisco Systems, Inc.

Android and Google Play™ are trademarks of Google LLC.

Other company and product names are trademarks of their respective owners.

Troubleshooting

I can't pair the watch with a phone.

Q1: Unable to establish a connection.

Supported phone model? Check if your phone model and OS are supported. Visit CASIO Website: https://world.casio.com/os_mobile/wat/

CASIO WATCHES app installed? The app must be installed. Install it from your phone's app store.

Correct Bluetooth settings? Configure phone's Bluetooth settings. Refer to phone documentation (iPhone: Settings > Bluetooth > On; Settings > Privacy > Bluetooth > CASIO WATCHES > On. Android: Enable Bluetooth).

Other: Some phones require BT Smart to be disabled. Refer to phone documentation (Home Screen: Menu > Settings > Bluetooth > Menu > BT Smart settings > Disable).

I can't reconnect the watch and phone.

Q1: Watch won't reconnect after disconnection.

CASIO WATCHES app running? The app must be running. On phone Home Screen, tap "CASIO WATCHES" icon. On watch, hold (C) for 3+ seconds.

Phone restarted? Turn phone off and on, tap "CASIO WATCHES" icon, then hold (C) on watch for 3+ seconds.

Timer countdown in progress? Connection is not possible with 30 seconds or less remaining on a timer countdown. Stop the countdown before connecting.

Q2: Cannot connect while phone is in Airplane Mode.

Disable Airplane Mode. On phone Home Screen, tap "CASIO WATCHES" icon. On watch, hold (C) for 3+ seconds.

Q3: Changed Bluetooth from enabled to disabled, cannot connect.

Re-enable Bluetooth on phone. Tap "CASIO WATCHES" icon. On watch, hold (C) for 3+ seconds.

Q4: Cannot connect after turning off phone.

Turn phone off and on, tap "CASIO WATCHES" icon. On watch, hold (C) for 3+ seconds.

Phone-Watch Connection

Q1: Cannot establish connection between phone and watch.

Phone restarted? Turn phone off and on, tap "CASIO WATCHES" icon. On watch, hold (C) for 3+ seconds.

Watch re-paired with phone? Delete pairing info from CASIO WATCHES app, then re-pair. Or delete pairing info from watch and re-pair.

Unable to establish connection: Delete pairing info from watch, then re-pair.

Changing to a Different Phone Model

Q1: Connecting current watch to another phone.

Delete pairing information from your watch, then pair it with the new phone. If you purchase another phone, repeat the pairing process.

Auto Time Correction by Bluetooth Connection (Time Correction)

Q1: When does the watch correct its time?

The watch connects with the phone and performs auto time correction around 12:30 a.m., 6:30 a.m., 12:30 p.m., and 6:30 p.m. Connection terminates automatically after correction.

Q2: Auto time correction not performed at scheduled time.

Is auto time correction enabled? Ensure it is enabled. Auto time correction is not performed for 24 hours after swapping Home/World Time or manual time setting. It resumes after 24 hours.

Q3: Time displayed is incorrect.

If the phone has no signal or is out of service range, the watch may display incorrect time. Connect the phone to its network and correct the time setting.

Q4: Hands are out of alignment.

Strong magnetism or impact can cause hand misalignment. Adjust hand alignment manually. Refer to "Hand Alignment Adjustment".

Alarm and Hourly Time Signal

Q1: An alarm does not sound.

Alarm settings may not be configured. Configure alarm settings.

Q2: The hourly time signal does not sound.

The hourly time signal may be disabled. Enable it.

Hand Movement and Indications

Q1: Don't know the current mode.

Check the mode hand position. Use (C) to navigate between modes.

Diagram shows watch buttons and mode hand.

Q2: Hands suddenly move at high speed.

This is normal and does not indicate malfunction. It occurs when the watch is connected to a phone for time correction. Wait for normal hand movement to resume.

Q3: Current time is off by a certain amount (e.g., nine hours).

The city setting is incorrect. Select the correct setting via "Setting a Home City".

Q4: Current time is off by one hour or 30 minutes.

The summer time setting is incorrect. Select the correct setting via "Setting a Home City".

Q5: Time indicated by hands differs from digital time.

Strong magnetism or impact can cause hand misalignment. Adjust hand alignment manually. Refer to "Hand Alignment Adjustment".

Other

Q1: Cannot find needed information.

Visit the website: https://world.casio.com/support/