Citizen Promaster Skyhawk A-T Cal. U680 - 45mm Watch Manual (2024)

Contents

• This watch is solar-powered. Expose the dial to light and use it sufficiently charged.
• To see details of charging time, specifications and operations, refer to the instruction manual.

Component identification

• Actual appearance may differ from the illustration.
• The crown has two positions when pulling it out.
  
• Refer also to our web page for detail of usage of the scale and bezel on the watch.
  (http://www.citizenwatch-global.com/support/pdf/enhanced/e.pdf)

Changing the mode

1. Pull the crown out to position .
2. Rotate the crown to change the mode.
   • Turn the crown so that the mode hand will point to a marker of the mode indication securely.

     Mode	Content
     TME	Mode for indicating the home time and the local time.
     CAL	Mode for indicating the date and day of week of the local time.
     TMR	Mode for using the countdown timer. For details, see the instruction manual.
     CHR	Mode for using the chronograph. For details, see the instruction manual.
     WT-S	Mode for hiding/indicating areas for the world time and changing their summer time setting.
     AL-1/2	Mode for using the alarm function. For details, see the instruction manual.
     RX-S	Mode for setting the type of time signal/summer time signal reception. For details, see Setting the reception time and Setting summer time.

3. Push the crown in to position to finish the procedure.

Using LED lights

Pressing button while the crown is in position turns on the LED lights for 2 seconds.

However, note that the lights do not come on in the following cases.

• During the mode is [TMR] or [CHR]
• During radio wave reception
• During 2-second interval movement (insufficient charge warning status)

Time indication of this watch

This watch indicates three types of time below:

Changing the time indication of the local time

• You can choose a time zone from the 44 areas and UTC for the local time.

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [TME] or [CAL].
3. Press and release the lower right button or the upper right button repeatedly to select an area.
   • See the table in Setting the area of the home time for selectable areas.
4. Push the crown in to position to finish the procedure.

Switching the home time and local time

You can switch the home time and local time easily.

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [TME] or [CAL].
3. Press and release both the lower right button and upper right button simultaneously.
   The alarm sounds and the home time and local time switch.
   • The calendar switches at the same time.
4. Push the crown in to position to finish the procedure.

Checking the power reserve

The function hand indicates the power reserve amount in levels.

Checking the signal reception result

• This watch receives the time signal at 2:00 AM every day and adjust the time and calendar automatically. If the 2:00 AM reception was unsuccessful, it tries signal reception again at 3:00 AM and 4:00 AM.
• The 4:00AM time reception can be changed to other time. Refer to Setting the reception time.

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [TME], [CAL] or [RX-S].
3. Push the crown in to position .
4. Press and release the lower right button .
   The second hand indicates the signal reception result (H/M/L/NO) and the function hand indicates the signal station (USA/EUR/CHN/JPN) from which the time signal was received.
   
   • Summer time setting of the home time is indicated on the digital display 2. ("SMT" and "ON" (or "OFF") are alternately indicated).

     H	Received signals in a very good condition
     M	Received signals in a good condition
     L	Received signals in a not-good condition
     NO	The reception failed.

   • "H", "M" and "L" only indicate the condition for reception, not related to the reception performance of the watch.
   • Try signal reception following the steps in Receiving the signal manually (on-demand reception) if the last reception failed.
5. Press and release the lower right button A to finish the procedure.
   The hands returns to normal.
   • It returns to normal indication automatically in about 10 seconds without pressing the button.

Setting the area of the home time

Choose the area where you usually use the watch to set the home time.

• The watch tries to receive the signal from the station assigned for the area of the home time (indicated on the digital display 2).

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [TME].
3. Press and release the lower right button or the upper right button repeatedly to select an area.
   • An area name and its time is shown on the digital display 1.
   • Pressing and holding the button changes area names continuously.
4. Press and release both the lower right button and upper right button at the same time.
5. Push the crown in to position to finish the procedure.

About the time zone

• The time zone in the table is based on UTC (Coordinated Universal Time).
• Countries or regions may change time zones for various reasons.
  
• USA: the United States of America, EUR: Europe, CHN: China, JPN: Japan
• For an area with * or **, the automatic switching of summer time/standard time are performed together.
• When using the watch in an area not listed in the table, select an area name in the same time zone.
• Areas with ♦ mark are out of receivable range and signals cannot be received. (The watch tries to receive signals from the target signal station though.)
• It may be difficult to receive signals in certain environment where it is hard for signals to reach.

Receiving the signal manually (on-demand reception)

• The watch tries to receive the signal from the station assigned for the area of the home time (indicated on the digital display 2).
• The watch does not try to receive the signal when the home time is UTC.
• The local time and UTC are adjusted synchronously as the reception finished successfully.
• It takes 2-15 minutes to finish reception.

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [TME], [CAL] or [RX-S].
3. Push the crown in to position .
4. Press and hold the lower right button A for 2 seconds or more.
   After an alarm sounds and the second hand points "RX", release the button. The second hand moves to point "H", "M", or "L" and then the time signal reception starts. The function hand indicates the signal station from which the time signal is to be received.
   
   The second hand returns to normal movement after finishing reception.

   Reception was successful	Corrected time/calendar is indicated.
   Reception failed	The time is not corrected and the previously set time resumes.

Setting the reception time

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [RX-S].
3. Pull the crown out to position .
4. Press and release the upper right button .
   The current reception time setting starts blinking and becomes adjustable.
5. Press and release the lower right button repeatedly to select an reception time setting.
   • Each time you press the button, the setting changes as follows:
     AUT → MAN → OFF → (back to the top)

     MAN (manual)	The 4:00AM time reception can be changed to other time (home time) in 1-hour units. It cannot be set to 2AM and 3AM.
     OFF (off)	Automatic reception is not performed.
     AUT (automatic)	Automatic reception is performed according to the initial settings (at 2AM, 3AM and 4AM).

   • When you select "MAN", rotate the crown to set the time of automatic reception.
6. Push the crown in to position to finish the procedure.

Setting summer time

Adjusting the automatic switching of summer time/standard time

You can choose whether the watch switches summer time/standard time automatically or not.

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [RX-S].
3. Pull the crown out to position .
   The current setting for automatic switching starts blinking and becomes adjustable.
4. Press and release the lower right button to select "AU" or "mA".

   AU (automatic)	Summer time/standard time are switched automatically depending on the summer time signal.
   mA (manual)	Summer time/standard time are not switched automatically.

   • Each time you press the button, the setting changes alternately.
5. Push the crown in to position to finish the procedure.

Activating/deactivating summer time for each area

You can activate/deactivate summer time separately for every area except UTC.

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [WT-S].
3. Pull the crown out to position .
   The digital display 2 turns off and "ON" or "OF" of the summer time setting of the area displayed on the digital display 1 starts blinking.
4. Rotate the crown to select an area.
5. Press and release the lower right button to select the summer time setting.

   ON	Summer time is indicated.
   OF (OFF)	The standard time is indicated.

   • Each time you press the button, the setting changes alternately.
6. Repeat steps 4 and 5 to set other areas.
7. Push the crown in to position to finish the procedure.

Setting the time and the calendar manually

• The time of the home time and UTC cannot be adjusted separately.
• The time of the home time and UTC is synchronously adjusted as that of the local time is adjusted.

Setting the time

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [TME].
3. Press and release the lower right button or the upper right button repeatedly to select an area.
4. Pull the crown out to position .
   The second had moves to the 0 second position and the digital display 2 (home area) turns off.
   The summer time setting starts blinking and becomes adjustable.
5. Press and release the upper right button repeatedly to change the target to be set.
   • Each time you press the button, the target changes as follows:
     
6. Adjust the time/indication/setting.
   Use the crown to adjust the hour and minute.
   Use button to set the summer time, second and 12/24-hour basis.
7. Repeat steps 5 and 6 to set other targets.
8. Push the crown in to position to finish the procedure.

Setting the calendar

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [CAL].
3. Press and release the lower right button or the upper right button repeatedly to select an area.
4. Pull the crown out to position .
   The digital display 2 turns off.
   The month starts blinking and becomes adjustable.
5. Press and release the upper right button repeatedly to change the target to be set.
   • Each time you press the button, the target changes as follows:
     
6. Rotate the crown to adjust the calendar.
7. Repeat steps 5 and 6 to set other targets.
8. Push the crown in to position to finish the procedure.

Checking the reference position

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [CHR].
   
3. Pull the crown out to position .
   The hands start to move to the current reference positions stored in memory.
4. Check the reference position.
   Correct reference positions:
   • Hour, minute and second hands: 0 hour 00 minute 00 second
   • 24-hour hand: "24"
   • UTC hour and minute hands: 0 hour 00 minute
   • Function hand: CHN
     When the current reference position is different from the correct one, proceed to step 4 of Correcting the reference position.
5. Push the crown in to position to finish the procedure.

Correcting the reference position

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [CHR].
3. Pull the crown out to position .
   The hands start to move to the current reference positions stored in memory.
4. Press and hold the upper right button for 2 seconds or more.
   "CHA" blinks on the digital display 2 and the function hand becomes adjustable.
5. Press and release the upper right button repeatedly to change the target to be set.
   • Each time you press the button, the target changes as follows:
     Function hand → UTC hour and minute hands → Hour hand/24-hour hand → Minute hand → (back to the top)
6. Rotate the crown to adjust the target hand.
7. Repeat steps 5 and 6 to set other targets.
8. Press and hold the upper right button for 2 seconds or more.
9. Push the crown in to position to finish the procedure.

Resetting the watch - All Reset

1. Pull the crown out to position .
2. Rotate the crown to change the mode to [CHR].
3. Pull the crown out to position .
4. Press and release both the lower right button and upper right button simultaneously.
   All the digital indication lights up and the watch is reset.
   Then a confirmation alarm sounds and all the hands show demonstration movement.

   The setting values after All Reset
   Areas of home time and local time	UTC
   Time	12:00 AM
   Calendar	January 1, 2008
   Reception time setting	AUT
   Summer time setting	OF (OFF) at all time zones
   Automatic switching of summer time/standard time setting	AU
   Alarm settings and time	OF (OFF), UTC, 12:00AM
   Timer	99:00
   Chronograph	00:00:00:00

After All Reset

After All Reset, adjust the reference position and set the time and calendar and other settings.