Citizen H504 User manual

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CONTENTS
1. Features ..................................................................................................... 3
2. Before Using .............................................................................................. 4
3. Displays and Buttons ................................................................................ 5
4. Functions Unique to Solar-Powered Watches ........................................ 6
• Insufficient Charging Warning Feature
• Quick Start Feature
• When the Watch has Stopped due to Insufficient Charging
• Overcharging Prevention Feature
5. General Reference for Charging Times ................................................. 11
6. Handling Precautions ............................................................................. 12
• Try to Keep the Watch Charged at all Times
7. Replacing the Secondary Battery .......................................................... 14
8. Setting the Time and Date ...................................................................... 15
• Setting the Time
• Setting the Date
9. Using the Chronograph .......................................................................... 18
10.Zero Positioning of Chronograph Second Hand .................................. 20
11.Precautions .............................................................................................. 22
12.Specifications .......................................................................................... 28
1. Features
This watch is a solar-powered watch that contains a solar cell in its face that
drives the watch by converting light energy into electrical energy. It is equipped
with features including a 24 hour display and chronograph function that allows
measurement of time in 1 second units up to 60 minutes.
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English

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2. Before Using
This watch is a solar-powered watch. Please fully charge the watch before
using by exposing it to light.
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 five months without additional charging.
<Proper Use of this Watch>
To use this watch comfortably, make sure to recharge it before it stops running
completely. Since there is no risk of overcharging (Overcharging Prevention
Feature), it is recommended that the watch be recharged everyday.
3. Displays and Buttons
Hour hand
Chronograph minute
hand
Second hand
Date
Button (B)
24 hour hand
Crown
Minute hand
Button (A)
Chronograph second hand
The design varies depending on the model.

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4. Functions Unique to Solar-Powered
Watches
When the watch becomes
insufficiently charged, the
following warning features
will be activated to inform
the wearer that the watch
is insufficiently charged.
[Normal Time Display]
[Insufficient Charging Warning Feature]
The second hand switches from 1-second
interval movement to 2-second interval
movement
[Stopped]
All hands stop moving
If insufficiently
charged If watch is continued to be
used without charging
The watch hands resume 2-second interval movement when the watch is charged by
exposing to light. However, the time is incorrect as a result of the watch having stopped
due to being insufficiently charged. Sufficiently charge the watch until it resumes 1-
second interval movement and reset the time before use.
If charged
2 seconds
2 seconds

[Insufficient Charging Warning Feature]
When the capacity of the secondary battery decreases as a result of light not
shining on the solar cell, the second hand switches from 1-second interval
movement to 2-second interval movement (insufficient charging warning
feature). Although the watch continues to keep time accurately at this time, the
watch stops after about 5 days have elapsed after the second hand has
switched to 2-second interval movement. When this happens, charge the
watch by exposing it to light until the second hand returns to 1-second interval
movement.
Notes: • During chronograph
measurement, measurement
stops and the chronograph
second hand is reset to the 0
seconds position.
• The chronograph minute hand
stops at any arbitrary position.
Return it to the 0 minutes position
by pressing button (B).
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[Quick Start Feature]
If the watch has stopped as a result of being insufficiently charged, the second
hand will begin 2-second interval movement and the watch will begin to run
about 10 seconds after the watch is exposed to light (approx. 500 lx). (The
time until the hands begin to move varies depending on the model.) Please
note, however, that the watch will stop again if the watch is blocked from the
light and is not sufficiently charged.
2-second interval movement

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[When the Watch has Stopped due to Insufficient Charging]
When the capacity of the secondary battery decreases as a result of the solar
cell not being exposed to light, the watch will stop due to being insufficiently
charged. The Quick Start Feature will be activated and the hands will begin to
move if the solar cell is exposed to light. Sufficiently charge the watch by
exposing to light so that it returns to the normal time display (1-second interval
movement).
Note: • The time is incorrect when the watch has stopped as a result of being
insufficiently charged even if the watch starts to run. Reset the watch
to the correct time before using.
[Overcharging Prevention Feature]
The overcharging prevention feature is activated when the secondary battery is
fully charged so that it is not charged further.
5. General Reference for Charging Times
Recharging time varies according to the watch model (such as the color of the dial). The
times in the table below should therefore only be used as a rough reference.
* Charging time refers to the amount of time during which the watch is continuously
exposed to light.
Illuminance
(lx)
500
Environment
Inside an ordinary office
Charging time (approximate)
3.5 hours 45 hours
Charging time from the
stopped state to normal
hand movement
(1-second interval
movement)
Full charge time
-----
1,000
Under a fluorescent lamp (30 W) at
a distance of 60-70 cm (24-28 in)
2 hours 19 hours -----
3,000 Under a fluorescent lamp (30
W) at a distance of 20 cm (8 in) 35 minutes 6 hours 110 hours
10,000 Outdoors, cloudy 11 minutes 2 hours 30 hours
100,000 Outdoors, summer and sunny
under direct sunlight 3 minutes 18 minutes 12 hours
One day usage
Full charge time: Time to fully recharge the watch after it has stopped.
One day usage: Time required for recharging the watch to run for 1 day with normal hand movement
(1-second interval movement).

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6. Handling Precautions
<Try to Keep the Watch Charged at All Times>
Please note that if you wear long sleeves, the watch can easily become
insufficiently charged as a result of the watch being covered and not being
exposed to light. The watch will continue to run properly if it is placed in as
bright a location as possible even when not being worn.
Charging Precautions
• Allowing the watch to reach high temperatures during recharging can
damage the watch. Avoid recharging in locations that can reach high
temperatures (about 60°C /140°F or higher).
Examples: • Charging by placing the watch in close proximity to a light source
that easily becomes hot such as an incandescent lamp or
halogen lamp.
• Charging the watch in a location that can easily become hot
such as on an automobile dashboard.
• When charging using the light from an incandescent lamp, charge while
being careful that the watch does not become excessively hot by placing at a
distance of at least 50 cm (20in) from the lamp.
Handling of Secondary Battery
• Please do not attempt to remove the secondary battery from the watch.
• If the secondary battery has been unavoidably removed, store it in a location
out of the reach of small children to prevent accidental swallowing.
• If the secondary battery should happen to be swallowed, please consult a
physician and seek medical attention immediately.
Only Use the Specified Secondary Battery
• Never use a secondary battery other than the secondary battery used in this
watch. Although the watch is designed not to operate if another type of
secondary battery is installed, since this may result in overcharging that can
cause the secondary battery to rupture, there is the risk of both damage to
the watch and injury to the wearer.
• Only use the specified secondary battery when replacing the secondary
battery.

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8. Setting the Time and Date
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 it to the right while
pushing it in to securely retighten it.
Hour hand
Second
hand 24 hour hand
Time
correction
position
Minute hand
[Setting the Time]
1. Pull the crown out to the time
correction position when the second
hand has reached the 0 seconds
position.
2. Turn the crown to set the time.
• The 24 hour hand moves in
conjunction with the hour hand. Pay
attention to 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.
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7. Replacing the Secondary Battery
Unlike ordinary silver-based batteries, the secondary battery used in this watch
does not have to be periodically replaced since it is able to be charged and
discharged repeatedly.

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[Hint for Accurately Setting the Time]
After stopping the second hand at the 0 seconds position, turn the minute hand
4-5 minutes past the correct time and then turn it back to the correct time. The
time on the watch can then be set to the correct time by pushing in the crown in
synchronization with a time service tone.
[Setting the Date]
1. Pull the crown out to the date correction
position.
2. Turn the crown to the right to set the date.
• The crown turns freely and the date does
not change if the crown is turned to the left.
• If the date is set while the time on the
watch is between the hours of about 9:00
PM and 1:00 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 date must be changed from
the last day of the month to the first day of the following month for those
months not having 31 days (months having 30 days and February).
• The date changes at around 12:00 AM.
3. Once the date has finished being set, return the crown to the normal
position.
Date correction position
Date

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9. Using the Chronograph
The chronograph function of this watch is able to measure and display elapsed
time up to 59 minutes, 59 seconds in 1 second units. After 60 minutes have
elapsed, each of the chronograph hands automatically stop at the 12:00
position.
[Chronograph Timing]
1. Start timing by pressing button (A).
• The chronograph is repeatedly started and
stopped by pressing button (A).
2. Pressing button (B) resets the chronograph
to 0 seconds.
Note: • Do not subject the chronograph to strong impacts while chronograph
timing is in progress. Subjecting the watch to a strong impact during
chronograph timing or when the chronograph has stopped
automatically after 60 minutes have elapsed can cause the
chronograph minute hand to shift out of position. If this happens, press
button (B) to reset to the 12:00 position before using the chronograph
again.
Chronograph
second hand
Button (A)
(A) (A)
(A)
(B) (B)
Button (B)
Chronograph
minute hand
Reset
Time
Measurement
Stop