Citizen J304 User manual
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English
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CONTENTS
1. Features .....................................................................................3
2. Before Using...............................................................................3
3. Names of Components...............................................................4
4. Setting the Time..........................................................................5
5. Setting the Date..........................................................................6
6. Using the Dual Time Function.....................................................7
7. Using World Time function.......................................................... 8
8. Special Functions of Solar-Powered Watches ..........................10
9. Charging Time ..........................................................................12
10. Notes Regarding Handling of Solar-Powered Watches ................
13
11. Helpful Hints............................................................................. 15
12. Precautions ..............................................................................16
13. Specifications ...........................................................................22
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1. Features
This is an analog solar-powered watch that is equipped with a solar cell incorporated in its face
to convert solar energy into electricity. The watch is also equipped with the large and highly
visible date indicator and the fan-shape 24-hour dial.
2. Before Using
Sufficiently Recharge by
Placing in Light Before Use
A secondary battery is used in this watch to store electrical energy. This secondary battery
is a clean energy battery that does not contain mercury or other toxic substances. Once fully
charged, the watch will continue to run for about 6 months without additional charging.
<How to use this Solar Watch Properly>
To use this watch comfortably, make sure to recharge the watch before it stops running
completely. Since there is no risk of overcharging (Overcharging Prevention Feature), it is
recommended that the watch be recharged everyday.
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3. Names of Components
* In the case the crown is of the screw-lock type, loosen the screw by turning the crown to the
left before operating the crown, and after having returned the crown to the normal position
following operation, turn the crown to the right while pushing it in to securely retighten it.
* The illustrations in this instruction manual may differ from the actual appearance of your watch.
Date
Hour hand
Minute hand
Second hand Crown
24-hour hand
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4. Setting the Time
* For accurate setting of the time
• Set in the time order of second hand,hour hand,minute hand,24-hour hand.
(1) Pull the crown out to position 2 when the second hand reaches the 60-second position.
(2) Turn the crown to set the time.
The date changes when the time is about 2:00 AM. Do not confuse AM and PM when setting
the time.
(3) Securely return the crown to the normal position in synchronization with a telephone or other
time service.The second hand will start moving and the watch will begin to keep accurate time.
(4) Pull the crown out to position 1 and turn it to the left to set 24-hour time. (Turn to the right to
set the date.)
(5) Return the crown to the normal position.
• For more accurate setting of the time, turn the minute hand 4-5 minutes past the correct time,
then turn it back to the correct time.
Hour hand
Minute hand
Second hand
24-hour hand
Pull the crown out to
position 1 (Turn to the left)
Pull the crown out to
position 2
24-hour time correction
Time correction
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5. Setting the Date
(1) Pull the crown out to position 1.
(2) Turn the crown to the right to set the date. (Turning the crown to the left enables correction of
the 24-hour hand.)
(3) When the date was set, return the crown to the normal position.
[Notes]
• If the date is set while the time on the watch is between the hours of about 11:00 PM and
2:00 AM, the date may not change on the following day. If this happens, set the date after
temporarily moving the hands to a time other than between the above times.
• The date is based on a 31-day calendar. The crown must be used to change the date from the
last day of the month to the first day of the following month for shorter months (months having
30 days and February).
Pull the crown out
to position 1
(Turn to the right)
Date correction
Date
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6. Using the Dual Time Function
The 24-hour hand enables the setting of the time for another time zone.The 24-hour time
setting can be made in 1-hour increments to enable use of the dual time function.
(1) Pull the crown out to position 1.
(2) Turn the crown to the left to set the 24-hour hand to a time in another time zone.
(Turning the crown to the right enables correction of the date.)
(3) When the setting was completed, return the crown to its normal position.
• The minute display position of the 24-hour hand stops at a position that is linked to the
minute hand.
• Please use the dual time function as a general reference only.
24-hour hand
Pull the crown out to
position 1 (Turn to the left)
24-hour time correction
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7. Using World Time function
* For models equipped with World Time function only
The World Time function allows you to see the time in 24 major cities in the world.
* The World Time function does not support Daylight Saving Time.
24-hour dial Crown for 24-hour
dial
City names
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