Casio 5544 User Guide
This guide provides instructions for operating the Casio 5544 watch.
Table of Contents
This document is structured to guide users through various functions of the Casio 5544 watch, including basic operations, time and date settings, world time, stopwatch, alarm, illumination, and troubleshooting.
Basic Operations
This section provides an overview of the watch and its functions.
Note: Illustrations in this guide are for comprehension and may differ slightly from the actual product.
Watch Display Elements
The watch display includes indicators for:
- Day of the week
- Mode indicator
- Battery level indicator
- [ST] indicator (Stopwatch mode)
- [TR] indicator (Timer mode)
- [AL] indicator (Alarm mode)
- Daylight Saving Time (DST) setting indicator
- Alarm activation/deactivation indicator ([ON]/[OFF])
- [RC] indicator (for time signal reception)
- Trotter indicating connection status with a phone
- Result of the last automatic time setting operation: [Y(YES)] for success, [N(NO)] for failure.
Navigation Between Modes
Press button (C) to cycle through modes. Holding button (C) for approximately one second switches to the Timekeeping Mode.
Mode Overview
- Timekeeping Mode: Displays current time with main hands and sub-dials. World time is shown on smaller hands.
- Stopwatch Mode: Uses the second hand and sub-dials to measure elapsed time.
- Timer Mode: Uses the second hand and sub-dials to display countdown time.
- Alarm Mode: Uses sub-dials to show alarm time and the second hand to indicate alarm activation/deactivation.
Setting the Time and Date
The watch can receive radio signals for time calibration or connect to a phone to set the date and time.
Important: Disable automatic time setting when in an airplane or other location where radio wave reception is prohibited or limited.
Connecting to a Phone to Set the Watch Time
The watch can be configured to automatically set its time daily from a connected phone.
Using this function: The watch sets its time four times a day. If the watch remains in Timekeeping Mode, this occurs automatically.
Example: A 12:30 time display.
Important: The watch may not be able to set the time if it's too far from the phone, if there are radio interference issues, if the phone is updating its system, or if the CASIO WATCHES app is not running.
Setting the Time Using a Time Signal
The watch can set its date and time based on a received time signal.
Presentation: The watch's set date and time can be adjusted using a received time signal.
Important: To ensure correct time setting via time signal reception, specify the correct time zone for your location.
If the watch fails to connect to a phone for time setting, it will attempt to receive a time signal.
Note: Time signal reception is limited to specific zones. If reception is not possible, connect to a phone to set the time and date.
Receiving Areas for Time Signals:
- Japan (JJY): Stations in Fukushima and Fukuoka/Saga, with a reception range of approximately 1,000 km.
- China (BPC): Station in Shangqiu, Henan province, with a reception range of approximately 1,500 km.
- USA (WWVB): Station in Fort Collins, Colorado, with a reception range of approximately 3,000 km.
- UK (MSF)/Germany (DCF77): Stations in Anthorn, Cumbria (UK) and Mainflingen (Germany), with a reception range of approximately 1,500 km.
Note: Reception may be affected by geography, weather, season, time of day, or wireless device interference, even within normal reception ranges.
Automatic Time Signal Reception
Automatic reception occurs between midnight and 5:00 AM. Once successful, no further automatic reception occurs that day.
Getting Started: Activate Timekeeping Mode. Navigate to modes.
Placement for Signal Reception: Place the watch near a window or suitable location for signal reception. Keep metal objects away from the watch. Do not move the watch during reception. Do not operate the watch during reception.
During reception, the trotter points to [RC]. Successful reception automatically sets the time and date.
Note: Reception takes 2-10 minutes, potentially up to 20 minutes. If the watch connects to a phone and sets its time, it will not perform automatic time signal reception for the rest of the day or the next.
Manual Time Signal Reception
- Place the watch near a window or suitable location.
- Activate Timekeeping Mode. Navigate to modes.
- Hold button (B) for approximately 1.5 seconds until the trotter points to [RC]. This indicates reception has started. Time and date are set upon completion.
Note: Reception takes 2-10 minutes, potentially up to 20 minutes. Reception is better at night than during the day.
Precautions for Signal Reception:
- If the watch cannot set its time via signal reception, the average accuracy is ±15 seconds per month.
- Internal decoding may cause a slight time lag (less than one second).
- Signal reception is not possible under the following conditions: low battery, Stopwatch Mode, Power Saving Mode Level 2, when the crown is pulled out, when the designated home city is outside the reception range, or when the watch is outside the time signal reception range.
- China does not observe Daylight Saving Time as of January 2018. If this changes, the watch's displayed time for China may be incorrect.
Checking the Result of the Last Time Setting
- Activate Timekeeping Mode. Navigate to modes.
- Press button (B). The trotter indicates the result of the last time setting operation for nine or ten seconds.
Note: If no operation is performed for nine to ten seconds, the watch hands return to the current time display. [Y(YES)] indicates a successful operation; [N(NO)] indicates a failed operation. If the watch was set manually, the trotter may point to [N(NO)] even if the signal reception was successful.
Using the Watch in Medical Facilities or Aircraft
To disable automatic time signal reception or phone connection in hospitals, aircraft, or other locations where these may cause issues, follow these steps. Repeat the same operation to re-enable them.
- Activate Timekeeping Mode. Navigate to modes.
- Press button (B). The trotter indicates the result of the last reception for nine or ten seconds.
- Within 10 seconds of pressing button (B), pull the crown to the first click. If more than 10 seconds pass, repeat step 2.
- Turn the crown to disable automatic time setting. [Y(YES)] indicates automatic time setting is enabled; [N(NO)] indicates it is disabled.
- Push the crown back in.
Note: The CASIO WATCHES app can also be used to disable automatic time setting.
Using Mobile Link with a Mobile Phone
When a Bluetooth connection is established between the watch and a phone, the watch time is set automatically. Other watch settings can also be modified.
Note: This feature is available only when CASIO WATCHES is running on the phone. The following symbols indicate operations: : watch operation, : phone operation.
Connection:
- Install the CASIO WATCHES application on your phone.
- Configure Bluetooth settings on your phone.
- Pair the watch with a phone. Place the phone near the watch (within 1 meter). Press and hold button (C) for about four seconds until the trotter points to . A connection is established when the trotter points to .
Important: If pairing fails, repeat from step 1. For initial setup of the CASIO WATCHES app, you may be asked to enable location information. Configure settings to allow background location information use.
Setting the Date and Time
Your watch can receive time signals and connect to a phone to set the date and time.
Important: Disable automatic time setting in airplanes or other areas where radio wave reception is prohibited or limited.
Connecting to a Phone to Set the Watch Time
The watch can be configured to automatically set its time daily from a connected phone.
Using this function: The watch sets its time four times a day. If the watch remains in Timekeeping Mode, this occurs automatically.
Example: A 12:30 time display.
Important: The watch may not be able to set the time if it's too far from the phone, if there are radio interference issues, if the phone is updating its system, or if the CASIO WATCHES app is not running.
Setting the Time Using a Time Signal
The watch's set date and time can be adjusted using a received time signal.
Presentation: The watch's set date and time can be adjusted using a received time signal.
Important: To ensure correct time setting via time signal reception, specify the correct time zone for your location.
If the watch fails to connect to a phone for time setting, it will attempt to receive a time signal.
Note: Time signal reception is limited to specific zones. If reception is not possible, connect to a phone to set the time and date.
Receiving Areas for Time Signals:
- Japan (JJY): Stations in Fukushima and Fukuoka/Saga, with a reception range of approximately 1,000 km.
- China (BPC): Station in Shangqiu, Henan province, with a reception range of approximately 1,500 km.
- USA (WWVB): Station in Fort Collins, Colorado, with a reception range of approximately 3,000 km.
- UK (MSF)/Germany (DCF77): Stations in Anthorn, Cumbria (UK) and Mainflingen (Germany), with a reception range of approximately 1,500 km.
Note: Reception may be affected by geography, weather, season, time of day, or wireless device interference, even within normal reception ranges.
Automatic Time Signal Reception
Automatic reception occurs between midnight and 5:00 AM. Once successful, no further automatic reception occurs that day.
Getting Started: Activate Timekeeping Mode. Navigate to modes.
Placement for Signal Reception: Place the watch near a window or suitable location for signal reception. Keep metal objects away from the watch. Do not move the watch during reception. Do not operate the watch during reception.
During reception, the trotter points to [RC]. Successful reception automatically sets the time and date.
Note: Reception takes 2-10 minutes, potentially up to 20 minutes. If the watch connects to a phone and sets its time, it will not perform automatic time signal reception for the rest of the day or the next.
Manual Time Signal Reception
- Place the watch near a window or suitable location.
- Activate Timekeeping Mode. Navigate to modes.
- Hold button (B) for approximately 1.5 seconds until the trotter points to [RC]. This indicates reception has started. Time and date are set upon completion.
Note: Reception takes 2-10 minutes, potentially up to 20 minutes. Reception is better at night than during the day.
Precautions for Signal Reception:
- If the watch cannot set its time via signal reception, the average accuracy is ±15 seconds per month.
- Internal decoding may cause a slight time lag (less than one second).
- Signal reception is not possible under the following conditions: low battery, Stopwatch Mode, Power Saving Mode Level 2, when the crown is pulled out, when the designated home city is outside the reception range, or when the watch is outside the time signal reception range.
- China does not observe Daylight Saving Time as of January 2018. If this changes, the watch's displayed time for China may be incorrect.
Checking the Result of the Last Time Setting
- Activate Timekeeping Mode. Navigate to modes.
- Press button (B). The trotter indicates the result of the last time setting operation for nine or ten seconds.
Note: If no operation is performed for nine to ten seconds, the watch hands return to the current time display. [Y(YES)] indicates a successful operation; [N(NO)] indicates a failed operation. If the watch was set manually, the trotter may point to [N(NO)] even if the signal reception was successful.
Using the Watch in Medical Facilities or Aircraft
To disable automatic time signal reception or phone connection in hospitals, aircraft, or other locations where these may cause issues, follow these steps. Repeat the same operation to re-enable them.
- Activate Timekeeping Mode. Navigate to modes.
- Press button (B). The trotter indicates the result of the last reception for nine or ten seconds.
- Within 10 seconds of pressing button (B), pull the crown to the first click. If more than 10 seconds pass, repeat step 2.
- Turn the crown to disable automatic time setting. [Y(YES)] indicates automatic time setting is enabled; [N(NO)] indicates it is disabled.
- Push the crown back in.
Note: The CASIO WATCHES app can also be used to disable automatic time setting.
Using Mobile Link with a Mobile Phone
When a Bluetooth connection is established between the watch and a phone, the watch time is set automatically. Other watch settings can also be modified.
Note: This feature is available only when CASIO WATCHES is running on the phone. The following symbols indicate operations: : watch operation, : phone operation.
Connection:
- Install the CASIO WATCHES application on your phone.
- Configure Bluetooth settings on your phone.
- Pair the watch with a phone. Place the phone near the watch (within 1 meter). Press and hold button (C) for about four seconds until the trotter points to . A connection is established when the trotter points to .
Important: If pairing fails, repeat from step 1. For initial setup of the CASIO WATCHES app, you may be asked to enable location information. Configure settings to allow background location information use.
World Time
The World Time mode allows you to check the current time in 27 cities and 39 time zones worldwide.
Getting Started: Activate Timekeeping Mode. Navigate to modes.
Setting a City for World Time:
- Pull the crown to the first click. The trotter indicates the currently selected world time city, and the mode indicator shows the DST setting for that city.
- Turn the crown to change the world time city (time zone). The small hour and minute hands of the world time display the current time in the selected time zone.
- You can also select a time zone not displayed on the watch face. Consult the list of cities (Time Zone) for more information.
- Push the crown back in.
World Time DST Setting:
If you are in a region observing Daylight Saving Time, you can configure the DST setting.
Note: The default DST setting for all cities is [AT (AUTO)]. In most cases, [AT (AUTO)] allows the watch to automatically switch between standard and DST. If you manually select a time zone without a city name, use [STD] or [DST] for the DST setting. You cannot modify or check the DST setting when [UTC] is selected as the city.
Configuration of World Time DST Setting
- Pull the crown to the first click. The trotter indicates the currently selected world time city (time zone). The mode indicator moves to the DST setting for the currently selected world time city.
- Hold button (A) for approximately one second. Each press of button (A) cycles through the DST settings: [AT (AUTO)] (automatic switching), [STD] (standard time), [DST] (daylight saving time).
- Push the crown back in.
Permutation of Local Time and World Time
Holding button (A) for approximately three seconds swaps local time and world time.
Note: Pressing (A) activates the illumination. Hold the button for approximately three seconds.
Before Travel: Configure World Time to the current time of your destination.
On Arrival: Swap the departure time zone with the destination time zone. Activate automatic time setting.
Note: If a time zone swap changes the day indicator setting, the mode indicator may rotate multiple times. For example, if Tokyo is your home city and New York is the world time city, they will be swapped as shown.
Diagram: Shows a visual representation of time zone swapping.
Note: Automatic time setting is suspended for 24 hours after swapping local and world time.
Movement of Hands and Day Indicator: If a hand movement results in a day indicator change, the mode indicator will rotate multiple times.
Note: This function is convenient for switching to another time zone. See the section below for usage details.
Switching to Another Time Zone
Use the procedure below to easily set the watch's day and time according to your destination.
Before Travel:
- Configure World Time to the current time of your destination.
- Disable automatic time setting.
On Arrival:
- Swap the departure time zone with the destination time zone.
- Activate automatic time setting.
Note: Use CASIO WATCHES to configure settings or use watch operations to configure settings.
Stopwatch
The stopwatch measures elapsed time from one second up to 23 hours, 59 minutes, and 59 seconds (24 hours).
Getting Started: Activate Stopwatch Mode. Navigate to modes.
Measuring Elapsed Time
- Perform the following operations to measure elapsed time:
- Start: Press (A)
- Stop: Press (A)
- Resume: Press (A)
- Reset: Press (B)
- Press button (B) to reset elapsed time.
- Press button (C) three times to return to Timekeeping Mode.
Timer
The countdown timer starts from a set time. A signal sounds when the countdown is complete.
The signal is disabled under the following conditions: low battery, Timer countdown less than 10 seconds remaining.
Getting Started: Activate Timer Mode. Navigate to modes.
Setting the Timer Start Time
- Pull the crown until it clicks at the first position.
- Turn the crown to set the countdown start time. The timer start time can be set in one-minute increments, up to 24 hours.
- Push the crown back in.
Note: You can set the countdown to start after 24 hours by positioning the small 24-hour hand to 24.
Using the Timer
- Press button (A) to start the countdown. A signal sounds for 10 seconds at the end of the countdown.
- Press any button to stop the signal.
- Press button (C) twice to return to Timekeeping Mode.
To pause a countdown: Press (A). To reset a paused countdown: Press (B).
Alarm
The watch emits a signal when an alarm time is reached.
The signal is disabled under the following conditions: low battery, watch in Power Saving Mode Level 2.
Getting Started: Activate Alarm Mode. Navigate to modes.
Configuring Alarm Settings
- Pull the crown until it clicks at the first position. This activates the alarm.
- Turn the crown to set the alarm hour.
- Push the crown back in.
- Press button (C) once to return to Timekeeping Mode.
Note: A signal sounds for 10 seconds when an alarm time is reached.
Activating/Deactivating the Alarm
- Press button (B) to activate or deactivate the alarm.
Note: The alarm is indicated as ON or OFF.
Stopping an Alarm
When the alarm sounds, press any button to stop it.
Illumination
The watch features an LED illumination that can be activated for reading in the dark. The illumination gradually brightens, then dims before turning off after approximately two seconds.
Getting Started: Activate Timekeeping Mode or Alarm Mode. Navigate to modes.
Activating Illumination
Pressing (A) activates the illumination.
The illumination automatically turns off when the alarm sounds. The illumination also turns off when the hands are advancing rapidly.
Note: You can also use the CASIO WATCHES app to adjust the illumination duration.
Aligning the Hands and Date
Magnetic exposure or strong impacts can disrupt the alignment of the hands and/or the day indicator. In such cases, align the hands and date indicator.
The watch automatically aligns the hour, minute, second, and 24-hour hands.
Note: The watch automatically aligns the hour, minute, second, and 24-hour hands.
Aligning the Hands and Date
- Pull the crown until it clicks at the second position.
- Hold button (B) for approximately five seconds until the trotter moves to the 12 o'clock position. Release the button when the trotter is at 12 o'clock. This starts the automatic alignment of the hour, minute, second, and 24-hour hands.
- Press button (C) to check the alignment. Ensure the small hour and minute hands, and the 24-hour hand are at 12 o'clock.
- If the small hands or the 24-hour hand are not at 12 o'clock, turn the crown to align them to 12 o'clock.
- Press button (C). Check that the mode indicator is at 12 o'clock and the day indicator is displayed correctly.
- If the mode indicator or day indicator is not in the correct position, turn the crown to move the mode indicator to 12 o'clock and the day indicator to the center of its display window.
- The range of movement for the mode indicator and day indicator is limited when turning the crown. The maximum left-right movement of the mode indicator is 180 degrees in either direction. The day indicator moves only slightly.
- Once the mode indicator and day indicator are in the desired positions, proceed to step 9. If you cannot make the desired adjustments, proceed to step 7.
- When changing the day, the mode indicator rotates multiple times. The mode indicator may continue to rotate for approximately 5 minutes.
- Press button (C). Ensure the day indicator shows "1".
- If "1" is not displayed for the day, turn the crown until "1" is displayed for the day. The mode indicator moves simultaneously with the crown. Move the mode indicator to 12 o'clock.
- Push the crown back in.
Note: If you leave the crown pulled out for more than 30 minutes without performing an operation, the setting operation will be automatically deactivated. In this case, return the crown to its normal position, then pull it out again to restart the operation. If you return the crown to its normal position before completing the alignment, the hands will return to their normal positions and align correctly. Any alignment performed from this step will be taken into account.
Diagram: Shows alignment of hands and day indicator.
Note: If the watch does not display the correct time even after adjustment, correct the hand and day indicator positions. Use the CASIO WATCHES app to adjust hand positions or use watch operations to adjust hand positions.
Chronomètre
The stopwatch measures elapsed time in units from one second up to 23 hours, 59 minutes, and 59 seconds (24 hours).
Getting Started: Activate Stopwatch Mode. Navigate to modes.
Measuring Elapsed Time
- Perform the following operations to measure elapsed time:
- Start: Press (A)
- Stop: Press (A)
- Resume: Press (A)
- Reset: Press (B)
- Press button (B) to reset elapsed time.
- Press button (C) three times to return to Timekeeping Mode.
Timer
The countdown timer starts from a set time. A signal sounds when the countdown is complete.
The signal is disabled under the following conditions: low battery, Timer countdown less than 10 seconds remaining.
Getting Started: Activate Timer Mode. Navigate to modes.
Setting the Timer Start Time
- Pull the crown until it clicks at the first position.
- Turn the crown to set the countdown start time. The timer start time can be set in one-minute increments, up to 24 hours.
- Push the crown back in.
Note: You can set the countdown to start after 24 hours by positioning the small 24-hour hand to 24.
Using the Timer
- Press button (A) to start the countdown. A signal sounds for 10 seconds at the end of the countdown.
- Press any button to stop the signal.
- Press button (C) twice to return to Timekeeping Mode.
To pause a countdown: Press (A). To reset a paused countdown: Press (B).
Alarm
The watch emits a signal when an alarm time is reached.
The signal is disabled under the following conditions: low battery, watch in Power Saving Mode Level 2.
Getting Started: Activate Alarm Mode. Navigate to modes.
Configuring Alarm Settings
- Pull the crown until it clicks at the first position. This activates the alarm.
- Turn the crown to set the alarm hour.
- Push the crown back in.
- Press button (C) once to return to Timekeeping Mode.
Note: A signal sounds for 10 seconds when an alarm time is reached.
Activating/Deactivating the Alarm
- Press button (B) to activate or deactivate the alarm.
Note: The alarm is indicated as ON or OFF.
Stopping an Alarm
When the alarm sounds, press any button to stop it.
Illumination
The watch features an LED illumination that can be activated for reading in the dark. The illumination gradually brightens, then dims before turning off after approximately two seconds.
Getting Started: Activate Timekeeping Mode or Alarm Mode. Navigate to modes.
Activating Illumination
Pressing (A) activates the illumination.
The illumination automatically turns off when the alarm sounds. The illumination also turns off when the hands are advancing rapidly.
Note: You can also use the CASIO WATCHES app to adjust the illumination duration.
Aligning the Hands and Date
Magnetic exposure or strong impacts can disrupt the alignment of the hands and/or the day indicator. In such cases, align the hands and date indicator.
The watch automatically aligns the hour, minute, second, and 24-hour hands.
Note: The watch automatically aligns the hour, minute, second, and 24-hour hands.
Aligning the Hands and Date
- Pull the crown until it clicks at the second position.
- Hold button (B) for approximately five seconds until the trotter moves to the 12 o'clock position. Release the button when the trotter is at 12 o'clock. This starts the automatic alignment of the hour, minute, second, and 24-hour hands.
- Press button (C) to check the alignment. Ensure the small hour and minute hands, and the 24-hour hand are at 12 o'clock.
- If the small hands or the 24-hour hand are not at 12 o'clock, turn the crown to align them to 12 o'clock.
- Press button (C). Check that the mode indicator is at 12 o'clock and the day indicator is displayed correctly.
- If the mode indicator or day indicator is not in the correct position, turn the crown to move the mode indicator to 12 o'clock and the day indicator to the center of its display window.
- The range of movement for the mode indicator and day indicator is limited when turning the crown. The maximum left-right movement of the mode indicator is 180 degrees in either direction. The day indicator moves only slightly.
- Once the mode indicator and day indicator are in the desired positions, proceed to step 9. If you cannot make the desired adjustments, proceed to step 7.
- When changing the day, the mode indicator rotates multiple times. The mode indicator may continue to rotate for approximately 5 minutes.
- Press button (C). Ensure the day indicator shows "1".
- If "1" is not displayed for the day, turn the crown until "1" is displayed for the day. The mode indicator moves simultaneously with the crown. Move the mode indicator to 12 o'clock.
- Push the crown back in.
Note: If you leave the crown pulled out for more than 30 minutes without performing an operation, the setting operation will be automatically deactivated. In this case, return the crown to its normal position, then pull it out again to restart the operation. If you return the crown to its normal position before completing the alignment, the hands will return to their normal positions and align correctly. Any alignment performed from this step will be taken into account.
Diagram: Shows alignment of hands and day indicator.
Note: If the watch does not display the correct time even after adjustment, correct the hand and day indicator positions. Use the CASIO WATCHES app to adjust hand positions or use watch operations to adjust hand positions.
Other Information
This section provides non-operational information that is also important to know.
List of Cities (Time Zone)
You can indicate a time zone not displayed on the watch face by aligning the trotter with the applicable UTC offset.
| City Code | City Name | Trotter Position | UTC Offset | Time Difference |
|---|---|---|---|---|
| LON* | London | 0 | 0 | 0 |
| PAR* | Paris | 2 | +1 | +1 |
| ATH* | Athens | 4 | +2 | +2 |
| JED | Jeddah | 8 | +3 | +3 |
| DXB | Dubai | 9 | +3.5 | +3.5 |
| DEL | Delhi | 10 | +4 | +4 |
| 11 | +4.5 | +4.5 | ||
| DAC | Dhaka | 12 | +5 | +5 |
| 13 | +5.75 | +5.75 | ||
| 14 | +6 | +6 | ||
| BKK | Bangkok | 15 | +7 | +7 |
| HKG* | Hong Kong | 16 | +8 | +8 |
| 17 | +8.5 | +8.5 | ||
| TYO* | Tokyo | 19 | +9 | +9 |
| 20 | +9.5 | +9.5 | ||
| SYD | Sydney | 21 | +10 | +10 |
| 22 | +10.5 | +10.5 | ||
| NOU | Nouméa | 23 | +11 | +11 |
| WLG | Wellington | 24 | +12 | +12 |
| 25 | +12.75 | +12.75 | ||
| TBU | Nuku'alofa | 26 | +13 | +13 |
| CXI | Kiritimati | 28 | +14 | +14 |
| BAR | Baker Island | 30 | -12 | -12 |
| PPG | Pago Pago | 32 | -11 | -11 |
| HNL | Honolulu | 36 | -10 | -10 |
| 38 | -9.5 | -9.5 | ||
| ANC* | Anchorage | 40 | -9 | -9 |
| LAX* | Los Angeles | 41 | -8 | -8 |
| DEN* | Denver | 42 | -7 | -7 |
| CHI* | Chicago | 44 | -6 | -6 |
| NYC* | New York | 46 | -5 | -5 |
| YHZ* | Halifax | 48 | -4 | -4 |
| 50 | -3.5 | -3.5 | ||
| RIO | Rio de Janeiro | 52 | -3 | -3 |
| FEN | Fernando de Noronha | 53 | -2 | -2 |
| RAI | Praia | 54 | -1 | -1 |
* Time zones for which time signal reception is possible. The information in this table was current as of January 2018.
Note: The information in the table above was current as of January 2018.
Daylight Saving Time Table
When [AT (AUTO)] is selected for a city that observes DST, the switch between standard and DST occurs automatically on the dates shown in the table below.
Note: The DST start and end dates for your city may differ from those shown below. In such cases, you can receive updated DST information for your home city and world time city by connecting the watch to a phone. If the watch is not connected to a phone, you can manually change the DST setting.
| City | DST Start | DST End |
|---|---|---|
| London | 01:00, the last Sunday in March | 02:00, the last Sunday in October |
| Paris | 02:00, the last Sunday in March | 03:00, the last Sunday in October |
| Athens | 03:00, the last Sunday in March | 04:00, the last Sunday in October |
| Sydney | 02:00, the first Sunday in October | 03:00, the first Sunday in April |
| Wellington | 02:00, the last Sunday in September | 03:00, the first Sunday in April |
| Anchorage | 02:00, the second Sunday in March | 02:00, the first Sunday in November |
| Los Angeles | 02:00, the second Sunday in March | 02:00, the first Sunday in November |
| Denver | 02:00, the second Sunday in March | 02:00, the first Sunday in November |
| Chicago | 02:00, the second Sunday in March | 02:00, the first Sunday in November |
| New York | 02:00, the second Sunday in March | 02:00, the first Sunday in November |
| Halifax | 02:00, the second Sunday in March | 02:00, the first Sunday in November |
| Rio de Janeiro | 00:00, the third Sunday in October | 00:00, the third Sunday in February, or the fourth Sunday in February |
Note: The information in the table above was current as of January 2018.
Supported Phone Models
For information on supported phone models, please visit the CASIO website.
Troubleshooting
Radio Wave Reception (Time Signal)
Q1: The watch cannot perform a reception operation.
- Is the watch battery charged? Reception is not possible with a low battery. Keep the watch exposed to light until it is sufficiently charged. (See Solar Charging)
- Is the watch in Timekeeping Mode? The watch cannot receive time signals if automatic reception is disabled or if it is in a mode other than Timekeeping Mode. Return to Timekeeping Mode. (See Navigation Between Modes)
- Is your home city setting correct? The watch will not display the correct time if the home city is incorrect. Modify your home city setting to indicate your location correctly. (See Specifying a Home City)
- You have checked the above points, and the watch still cannot perform a reception operation. Is reception not possible under the following conditions?
- When the watch is in Power Saving Mode Level 2
- When the crown is pulled out
- When a timer countdown is in progress
Q2: The signal reception fails every time.
- Is the watch in a location where signal reception is possible? Check your surroundings and move the watch to a location with better reception. (See Placement for Signal Reception)
- Did you avoid touching the watch while the reception operation was in progress? Minimize watch movements and do not operate the watch during reception.
- Is an alarm set to sound at the same time as the signal reception operation? Reception is interrupted when an alarm sounds. Deactivate the alarm. (See Activating/Deactivating the Alarm)
- Is the signal transmitter in your area emitting a signal? The time signal transmitter may not be transmitting a signal. Try again later.
Q3: The signal should have succeeded, but the time and/or date on the watch is incorrect.
- Is the time zone for the watch's location of use correctly specified? Specify the time zone for the watch's location of use. (See Configuring DST Setting for Home City, Configuring DST Setting for World Time)
- Is the alignment of the hands and/or day indicator correct? Correct the alignment of the hands and/or day indicator. (See Aligning the Hands and Date)
- You have checked the above points, and the time and/or date is still incorrect. Set the time and date manually. (See Manual Time Setting)
Mobile Link
Suspension of Radio Wave Transmission by this Watch: The watch transmits radio waves each time the trotter points to . Even if the trotter is not pointing to , the watch attempts to connect to a phone four times a day to ensure time setting. If you are in a hospital, airplane, or other location where radio wave use is not permitted, perform the following operation to disable radio wave transmission.
- Disabling Radio Wave Transmission: Press button (C) to end the Bluetooth connection.
Disabling Automatic Time Setting: Configure CASIO WATCHES settings to disable synchronization between the watch and the phone. (See Using the CASIO WATCHES App to Disable Automatic Time Setting)
Copyrights and Registered Copyrights
- The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. Any use of these marks by CASIO Computer Co., Ltd. is under license.
- iPhone and App Store are trademarks of Apple Inc. in the U.S. and other countries.
- iOS is a trademark or registered trademark of Cisco Systems, Inc.
- GALAXY, GALAXY Note, and GALAXY S are registered trademarks of Samsung Electronics Co., Ltd.
- Android and Google Play™ are trademarks or registered trademarks of Google LLC.
- Other company or product names mentioned herein are trademarks or registered trademarks of their respective holders.
Operations of the Crown
Q1: Nothing happens when I turn the crown.
If you do not perform any operation for approximately two minutes after pulling out the crown (about 30 minutes for hand and day indicator alignment operations), the crown operations will be automatically deactivated. Return the crown to its normal position, then pull it out again to reactivate crown operations. (See Using the Crown)
Q4: The hands suddenly start moving at high speed.
This phenomenon is due to one or more of the following reasons and does not indicate a malfunction. Simply wait for the normal hand movement to resume.
- The watch is exiting Power Saving Mode. (See Power Saving)
- The watch is receiving a time signal and setting the time. (See Setting the Date and Time)
- The watch is connected to a phone to set the time. (See Connecting to a Phone to Set Watch Time)
Q5: The hands are stopped and the buttons do not function.
The watch is in recovery mode after charging. Wait until the recovery process is complete (approximately 15 minutes). The watch will recover faster if placed in a very bright location.
Q6: Why is the current time displayed on the watch offset (by nine hours, three hours, or 15 minutes, etc.)?
The city setting is incorrect. Select the correct setting. (See Specifying a Home City)
Q7: The time displayed on the watch is offset by one hour or 30 minutes.
The Daylight Saving Time setting is incorrect. Select the correct setting. (See Specifying a Home City)
Q8: The hands and/or day indicator are not aligned correctly.
Magnetic exposure or strong impacts can disrupt the alignment of the hands and/or day indicator. Correct the alignment of the hands and/or day indicator. (See Aligning the Hands and Date)
- Refer to the information below for how to manually align the hands and day indicator. (See Aligning the Hands and Date)
