Casio GW-1400 Watch User Manual

For watches with polymer straps...

• You may notice a whitish powdery substance on the strap. This substance is harmless and can be easily removed by wiping with a soft cloth.
• Exposure of the polymer strap to sweat or moisture, or storage in high humidity conditions, can lead to damage, tearing, or cracking. To ensure a long service life for the polymer strap, wipe it clean of dirt and water with a soft cloth as often as possible.

For watches with fluorescent cases and straps...

• Prolonged exposure to direct sunlight may cause the fluorescent color to gradually fade.
• Prolonged contact with moisture may cause the fluorescent color to gradually fade. If any moisture gets on the watch surface, remove it as soon as possible.
• Prolonged contact with a wet surface may cause the fluorescent color to fade. Ensure the fluorescent surface is dry and avoid contact with other surfaces.
• Friction of a surface with fluorescent paint against another surface may transfer the fluorescent paint to that surface.

Setting Current Time

Your watch automatically adjusts to the time signal. If you are outside the signal reception area, you can set the time manually.

• Select the city code for your local time (the city where you usually use the watch).
• If you plan to use the watch outside of transmitter range, you will need to set the time manually. Refer to the "Manual Time and Date Setting" section for instructions.
• Digital and analog time are synchronized. The analog time is automatically set whenever you adjust the digital time.

How to Set Your City for Use

DST Indicator: Indicates Daylight Saving Time is active.

Diagram Description: A visual showing the DST indicator and the city code display.

1. In Timekeeping Mode, press and hold button "A" to enter the city code setting mode. The city code will flash on the screen.
2. Use button "D" to scroll through city codes (west to east) and select your local time city.
3. Press button "A" to exit the setting mode.

Your watch will usually display the correct time after you select your city code. If not, the time will be adjusted automatically at the next signal reception (midnight). You can also perform a forced signal reception or set the time manually.

If you select LON, PAR, or BER as your city code, automatic time signal reception will be enabled. The watch will receive the signal from the transmitter (at midnight) and automatically adjust the time. The DST indicator on the screen shows that Daylight Saving Time is active. If your region does not use DST, turn it off.

If AUTO, 77, 60, or OFF flashes on the screen instead of a city code, press and hold button "A" as described in step 1, then press "A" again to exit the setting mode. Then press "D" and repeat step 1.

How to View Digital Time and Last Signal Screen

In Timekeeping Mode, you can cycle through the digital time display screens using buttons "A" and "D" as shown in the figure.

Diagram Description: Shows different screens for digital time and the last signal received.

The Last Signal screen shows the date and time of the last received time signal. If the calibration signal was not received due to low battery (level 4) or battery replacement, "- - -" will be displayed instead of the date and time.

Last Signal Screen

The Last Signal screen flashes for one or two minutes before returning to the current time display.

Receiving Radio Signals

There are two methods for receiving signals: automatic and manual.

• Automatic Reception: The watch automatically receives the time signal four times a day at 0:00, 2:00, 3:00, and 4:00 AM. If none of these operations are successful, reception will be attempted again at 5:00 AM.
• Manual Reception: You can initiate signal reception by performing specific button operations (see "Manual Radio Signal Calibration").

Attention:

• Before attempting to receive a signal, remove the watch and place it near a window, away from metal objects, with the 12 o'clock position facing the window. Ensure there are no metal objects nearby.

Diagram Description: Shows a watch placed near a window with the 12 o'clock position facing outwards.

Important! Normal signal reception may be difficult or impossible under the following conditions:

• Near televisions, refrigerators, computers, or other household appliances.
• Far from radio transmitters, inside reinforced concrete structures, or near mountains.
• Underground, in tunnels, or inside reinforced concrete buildings.
• Near high-voltage power lines, neon signs, or radio transmitters that cause interference.
• Near railways, highways, or airports.
• On a train or in a car.

Nighttime reception is generally better than daytime reception.

The signal reception process takes 2 to 7 minutes, sometimes up to 14 minutes. Please do not move the watch or press any buttons during this time.

Your watch can receive the time calibration signal transmitted from Rugby, England, and Mainflingen, Germany. The signal is received within a range of approximately 1,500 km from the transmitter.

At distances over 500 km from the transmitter, the signal may become weak, and reception may not occur under certain conditions.

Diagram Description: A map showing the approximate reception range from Rugby and Mainflingen.

• Even within the reception range, the signal may not reach the watch due to interference from mountains or other geological obstacles between the watch and the signal source.

About Automatic Signal Reception

When automatic time signal reception is enabled, the watch automatically attempts to receive the signal at 0:00, 2:00, 3:00 AM, and 4:00 AM daily. If none of these operations are successful, the reception attempt will be repeated at 5:00 AM.

• Automatic signal reception is activated whenever you select LON, PAR, or BER as your city code.
• Signal reception occurs only in Timekeeping or World Time modes at the specified times. Reception will not occur during an alarm sound or when the watch is in a setting mode (flashing display).
• Automatic calibration signal reception occurs early in the morning while you are likely sleeping. Before going to bed, remove the watch, place it on a flat surface in an area with good reception.
• When automatic signal reception is enabled, it takes 2 to 7 minutes each day. You should not operate the watch buttons within 7 minutes before or after signal reception, as this may lead to incorrect time adjustments.
• Note that signal reception depends on the time displayed on the watch's digital indicator. The reception operation will occur each time the digital display shows 0:00 AM, 2:00 AM, 3:00 AM, and 4:00 AM, regardless of whether the displayed time is accurate.
• If the signal is successfully received two, three, or four times, the watch uses the data from the last successful reception for calibration. If only one signal is successfully received, the watch uses the data from that single reception.

Signal Reception Indicator

The signal reception indicator shows the quality of the reception. The appearance of the indicator varies by model. For optimal reception, place the watch in an area of strong signal strength.

Diagram Description: Shows icons representing weak and strong signal reception.

Even in an optimal reception area, it takes approximately 10 seconds for the indicator to show a strong signal.

Use the indicator to check signal strength and find the best position for the watch during reception.

Manual Radio Signal Calibration

1. Place the watch on a flat surface with the 12 o'clock position facing the transmitter.
2. In Timekeeping Mode (except for the Last Signal screen), press and hold button "D" for 2 seconds until you hear a beep.
3. When you release button "D", the reception indicator will appear, signaling the start of signal reception.

The reception process takes 2 to 7 minutes, sometimes up to 14 minutes. Please do not move the watch or press any buttons during this time.

Viewing Time in Other Cities

In World Time Mode, press button "D" to cycle through city codes from west to east. The city code is displayed for 2 seconds, then replaced by the current time for that city. To see the city code again, press button "A".

If a selected time zone primarily covers an ocean, the difference from Greenwich Mean Time (GMT) will be displayed instead of a city code.

If the current time is incorrect, check your city setting and make necessary adjustments.

Switching Between Standard and Daylight Saving Time (DST)

DST Indicator: Indicates Daylight Saving Time.

1. In World Time Mode, display the city code for which you want to set Standard or Daylight Saving Time using button "D".
2. Press and hold button "A" to switch between Daylight Saving Time (DST indicator on screen) and Standard Time (no indicator).

The DST setting affects only the city code currently displayed on the screen. It does not apply to other cities.

• You cannot use World Time Mode to set the DST for your home city selected in Timekeeping Mode.
• You also cannot switch between DST and Standard Time if GMT is selected as the city code.
• The DST indicator appears whenever a city for which DST is active is displayed on the lower dial.
• Current time for all cities in this mode is calculated based on their difference from GMT, according to the local time set.

Setting the Alarm

1. In Alarm Mode, press button "D" to switch to the alarm setting screen.
2. Press and hold button "A". The hour digits will flash, indicating they are ready for setting. The alarm will automatically turn on at this time.
3. Press "C" to move the flashing cursor between hours and minutes.
4. Use buttons "D" (+) and "B" (-) to change the flashing values. When using the 12-hour format, note whether you are setting AM (no indicator) or PM (P indicator).
5. After setting the alarm time, press button "A".

How the Alarm Works

• The alarm sounds for 10 seconds at the set time.
• Press any button to stop the alarm.
• Alarm and hourly signals sound according to the digital time.

Checking the Hourly Signal

Press and hold button "D".

Diagram Description: Shows the alarm indicator and hourly signal indicator.

Turning Alarm and Hourly Signal On/Off

1. In Alarm Mode, use button "D" to select either the alarm or the hourly signal.
2. Press button "A" to turn the selected signal ON (indicator ON) or OFF (indicator OF).

The alarm and hourly signal indicators remain on the screen in all modes.

Diagram Description: Shows the ON/OFF toggle for alarms and hourly signals.

Stopwatch Operation

Manual Illumination

Pressing button "B" in any mode (except setting modes) will illuminate the backlight.

This function illuminates the screen regardless of whether the auto-light function is enabled.

About Auto-Light

When the auto-light function is enabled, the watch automatically illuminates the display each time your hand is positioned as shown in the figure below. Note that illumination only occurs when the ambient light level falls below a certain point. The backlight will not activate in bright light.

Diagram Description: Illustrates tilting the watch about 40 degrees towards yourself while holding it parallel to the ground to activate the backlight.

Warning!

• Do not attempt to read your watch in the dark while climbing a mountain or in other hazardous locations. This is dangerous and may lead to injury.
• Do not read your watch while walking on the side of a road or in areas with vehicle traffic. This is risky and may lead to an accident.
• Do not read your watch while cycling, riding a motorcycle, or driving a car. This may lead to an accident.
• Before operating a vehicle, check that the auto-light function is turned off on your watch. Its sudden, unintentional activation could distract you and lead to an accident.

Turning Auto-Light On/Off

In any mode (except setting modes), press and hold button "B" for two seconds to turn the auto-light function ON (auto-light indicator appears on screen) or OFF (no indicator).

• The auto-light indicator appears on the display in all modes.
• Auto-light automatically turns off when the battery power drops to level 3.
• Auto-light is not available in setting modes.

Setting Backlight Duration

1. In any mode (except the Last Signal screen in Timekeeping Mode), press and hold button "A" until the city code flashes on the screen, indicating entry into the setting mode.
2. Press button "C" three times to move the flashing cursor to the seconds setting for duration.
3. Press button "B" to cycle between backlight durations of 3 seconds (indicated by '3') and 1.5 seconds (indicated by '5').
4. Press button "A" to exit the setting mode.

Manual Time and Date Setting

1. In Timekeeping Mode (except for the Last Signal screen), press and hold button "A". The city code will flash on the screen, indicating entry into the setting mode.
2. Press button "C" to cycle through the flashing values in the following sequence: City Code, DST, Power Saving, 12/24-Hour Format, Month, Seconds, Hour, Year, Date, Minutes.
3. While a value is flashing, use button "D" to change the displayed setting as shown below.

Diagram Description: Shows examples of city codes, DST settings, and time/date values.

After exiting the setting mode, the analog hands will automatically adjust to match the digital time.

Automatic DST switching can only be selected if BER, PAR, LON, or ATH is set as the city code. Refer to the "Reference Information" section for details on the Power Saving Mode.

Setting Automatic Daylight Saving Time

1. In Timekeeping Mode (except for the Last Signal screen), press and hold button "A". The city code will flash on the screen, indicating entry into the setting mode.
2. Press button "C" once to advance to the Daylight Saving Time setting screen.
3. Use button "D" to select automatic or manual switching between Daylight Saving and Standard Time.

Diagram Description: Shows the AUTO, OFF, and ON DST options.

1. Press button "A" to exit the setting mode.

If Daylight Saving Time is active, the DST indicator will appear on the lower dial.

Analog Time

The analog and digital times on your watch are synchronized. The hands automatically adjust when the digital time is set.

Note

• The hands adjust automatically in the following situations:
• When you manually change the digital time.
• When the digital time is adjusted by a received signal.
• When you change your city code.

If the analog time does not match the digital time for any reason, follow the procedure below. Always set the digital time first.

How to Adjust Hands

1. In Timekeeping Mode, press button "C" 5 times to enter the hand setting mode.
2. Press and hold button "A" until the digital time flashes on the screen, indicating entry into the setting mode.
3. Pressing button "D" advances the hands by 20 seconds.

Pressing and holding button "D" will advance the hands at a faster speed. To advance the hands over a long distance, press and hold button "D", then press button "B" to engage rapid movement. You can release the buttons, and the hands will continue to move rapidly until you press any button, an alarm sounds, or the hands pass the 12 o'clock position.

1. Press button "A" to exit the setting mode.

The minute hand will be slightly adjusted to match the seconds when the setting mode is exited.

Press button "C" to return to Timekeeping Mode.

Battery Power Indicator

The battery power indicator on the digital display shows the current charge level of the rechargeable battery.

• All watch functions operate when the Battery Status screen shows the HI (High) or MID (Medium) indicator.

Diagram Description: Shows icons for battery levels HI, MID, and CHARGE, and a note to charge the battery.

Levels 1 and 2 are only displayed on the Battery Status screen.

• The flashing "CHARGE" indicator at level 3 alerts you that the battery is low and you should expose the watch to light as soon as possible.
• At level 3, the analog hands stop at the 12 o'clock position. All digital segments flash while the hands are moving.
• At level 4, all functions stop operating. They will resume when the rechargeable battery is charged, but any data previously stored in memory will be lost. Therefore, after the battery is charged and the watch returns from level 4 to level 2, you will need to set the current time and date. Although the current time may appear on the screen after returning to level 3, you cannot adjust it until the watch returns to level 2.

If the watch is exposed to direct sunlight or other very strong light sources, the battery power indicator may show a higher level than the actual charge for a short time. The correct indicator should appear after a few minutes.

Frequent use of the backlight and alarm sounds places a heavy load on the battery, which may cause the "R" indicator to appear on the screen, indicating that backlight, alarm sounds, digital/analog time synchronization, and signal reception are temporarily unavailable. Operation usually resumes after the battery is recharged and the message disappears from the screen.

If the battery charge drops to level 3 while the "R" indicator is displayed, the Battery Status screen will show the "LO" indicator. Charge the battery as soon as possible.

Precautions for Battery Charging

Avoid overheating the watch while charging the battery. Avoid charging your rechargeable battery in the following locations:

• On a car dashboard parked in direct sunlight.
• Too close to an incandescent lamp.
• Under direct sunlight or intense heat for extended periods.

Charging Recommendations

The time required to charge the watch daily is approximately:

After the watch is fully charged, all functions will operate for approximately 9 months under the following conditions:

• 18 hours per day of normal time display, 6 hours standby.
• 1 backlight operation (1.5 seconds) per day.
• One 10-second alarm signal per day.
• Four time signal receptions per day.

To ensure continuous operation, charge the watch as often as possible.

Power Saving Function

When this function is enabled, the watch automatically enters a sleep mode (sleep screen or sleep functions) when left in an unlit area for a certain period. The table below shows how the watch operates based on the time spent in darkness.

Diagram Description: Shows the PS indicator.

• If the watch is covered by clothing, it may enter sleep mode.
• The watch will not enter Power Saving Mode between 6:00 AM and 9:59 PM. If it was already in sleep mode at this time, it will remain in sleep mode.
• When entering the "sleep functions" state, the hands move to the 12 o'clock position. If the analog time does not match the digital time after exiting this state, adjust the hands.
• The watch will not enter Power Saving Mode from Stopwatch Mode.

City Codes Table

Difference from GMT

Data as of June 2003.

Product Information

Product Name: Electronic / Electro-mechanical Quartz Wristwatch (Men's/Women's)

Brand: CASIO

Manufacturer: CASIO COMPUTER Co., Ltd.

(CASIO Computer Co., Ltd.)

Manufacturer Address: 6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan

Importer: OOO "Kasio", 127055, Moscow, ul. Suchevskaya, d.27, str. 1, Russia

Country of Manufacture: Japan

Warranty Period: 1 year

Address of Authorized Organization for Claims: As indicated on the warranty card.

Product Compliance: Complies with GOST 26270-98 (clause 4.35)

Certificate of Conformity No.: РОСС JP. АЯ46.Д42228 / РОСС JP. АЯ46.Д42071 / РОСС JP. АЯ46.Д42230