Citizen 0870 User Manual

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Before using
When the watch does not operate according to the instruction manual, it is insufficiently charged. Charge the secondary battery of the watch for more than 6 hours, approximately 20cm (8in.) away from the fluorescent or incandescent lamp (30W) as light sources. When charging the secondary battery, do not put it too close to the light source. * When charging the watch under direct rays of the sun,
charge for more than an hour.
IMPORTANT

FEATURES

This watch is a multi-hands analog solar watch with alarm and chronograph functions, and a solar power function as its base which provides the power source for the watch's hands movement and alarm sound by converting solar energy into electrical power with the solar cell fitted on its face.

BEFORE USING

A secondary battery is used in this watch to store electrical energy. This secondary battery is a clean energy battery which doesn't use any toxic substances such as mercury. Once fully charged, the watch will continue to run for about 80 days (using the alarm sound for 15 seconds/day and the chronograph timer for 60 minutes/day) without further charging.
How to use this watch properly For the comfortable use of this watch and its additional alarm and chronograph functions, take care to keep it sufficiently recharged.
There is no concern for overcharging this watch. (Overcharge Prevention Function is included)
We recommend that you recharge the watch everyday.
1
English
USING THE CHRONOGRAPH ..............................................................21
Chronograph Measurement ....................................................................22
Chronogragh Split Measurement ............................................................24
IN THESE CASES ..................................................................................25
CHECKING AND ADJUSTING THE HAND’S “0” POSITION ..............28
PRECAUTIONS ......................................................................................30
Water Resistance ....................................................................................30
Long-Term Use........................................................................................32
SPECIFICATIONS ..................................................................................35
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CONTENTS

FEATURES ..............................................................................................1
BEFORE USING ......................................................................................1
FUNCTIONS OF SOLAR POWERED WATCH ........................................4
Insufficient Charge Warning Function........................................................6
Stop Warning Function..............................................................................6
Time Setting Warning Function ................................................................6
Overcharge Prevention Function ..............................................................6
NOTES ON USE........................................................................................8
NOTES ON CHARGING ..........................................................................9
NAMES OF PARTS ................................................................................10
TIME REQUIRED FOR CHARGING ......................................................12
CHANGING THE MODES ......................................................................14
SETTING THE TIME ..............................................................................16
SETTING THE CALENDAR....................................................................17
Leap year adjustment..............................................................................18
USING THE ALARM ..............................................................................19
Setting the Alarm ....................................................................................19
Switching the Alarm ON and OFF ..........................................................20
Alarm Sound Monitor ..............................................................................20
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FUNCTIONS OF SOLAR POWERED WATCH

These functions are only found in the solar powered watch. If this watch becomes insufficiently charged, a warning function comes into operation and the display changes, as below.
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Normal time
display
Time setting
warning display
Stop warning
display
If insufficiently charged
If charged
If charged
If charging is insufficient
If sufficiently charged and time is set
Insufficient charge
warning display
If insufficient charge continues for a further about 5 days
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Time Setting Warning Function

When the watch is recharged by exposing it to light after once stopped, the second hand moves to the SET position, indicating that the watch does not keep correct time. (Time setting warning display) * The hour, minute and 24-hour hands run at the incorrect time.
Refer to page 25, “In These Cases”.

Overcharge Prevention Function

You can recharge without worry. When the secondary battery is fully recharged, the overcharging prevention function works so that the secondary battery is not overcharged.
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Insufficient Charge Warning Function

If the watch is put in the undercharged state during any display mode, it switches to the time display when in other display modes, then the second hand moves to the CHARGE position, indicating the shortage of electricity. (Electric power shortage warning display) Even then, the time (hour, minute and 24-hour hands) runs accurately. * The alarm does not ring even if it is set. * If the chronograph is being used, measurement stops and it is reset. * The push button does not function.
Refer to page 25, “In These Cases”.

Stop Warning Function

If the watch is left intact in the undercharged state, about 5 days later the second hand will move to the STOP position, indicating that the watch has stopped due to electric power shortage. (Stop warning display) The other hands (hour, minute and 24-hour hands) also stop. * In this condition, all functions stop.
Refer to page 25, “In These Cases”.
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NOTES ON CHARGING

NOTE
• The watch will be damaged during recharging if it gets too hot (over 60°C/140°F). Avoid recharging at high temperatures. (eg) Charging the watch near a light source that easily becomes hot, such
as an incandescent lamp or a halogen lamp. Charging in a place that easily becomes hot, such as a dashboard.
• Note that full charging is difficult in a place irradiated by only weak light.
• When you charge the watch by an incandescent lamp, take a distance about 50cm (20in.) from the light source to prevent extremely high temperature.
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NOTES ON USE

Please take care to charge your watch during use.
Please note that if you wear long sleeves, the watch can easily become insufficiently charged because it is hidden and not exposed to light.
• When you take off the watch, try to place it in as bright a place as possible, and it will always continue to run properly.
CAUTION
Never use another battery apart from the secondary battery (Titanium Lithium Ion Battery) used in this watch. The watch structure is so designed that a different kind of battery other than the specified cannot be used to operate it. However, in case a different kind of battery such as a silver battery is used by some chance, there is a danger that the watch will be overcharged to burst, causing damage to the watch and even to the human body. When you replace the secondary battery, be sure to use a designated secondary battery.
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NAMES OF PARTS

Please see the watch illustration at the beginning.
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Name Time mode
Calendar
Alarm mode
Chronograph
mode mode
1: Mode hand Displays TME Displays CAL Displays ALM Displays CHR 2: Second Displays Displays current Displays alarm
Displays chronograph
2: hand seconds month ON/OFF seconds
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: Minute hand
Displays minutes Alarm minute hand
Displays time
minutes
4: Hour hand
Displays hours Alarm hour hand
Displays time
hours
Synchronized
Synchronized Synchronized
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: 24-hour
with hour hand and
with alarm hour with hour hand
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: hand
displays 24-hours
hand and displays and displays
24-hours 24-hours
Displays
6: Function
Always “0” (12 o’clock) position
chronograph’s
6: hand 1/20 seconds
or minutes
7: Calendar Displays current date
Name Time mode Calendar mode Alarm mode
Chronograph
mode
M button
Mode change Mode change Mode change
Mode change
Time adjustment Calendar adjustment Time adjustment
Month correction
Switches alarm Chronograph
A button Not used in clockwise
ON and OFF start/stop
direction
Reading the
B button
Adjusts time
Date correction
Adjusts time chronograph
clockwise clockwise measurement
in 1/20 second
C button
Adjusts time
Not used
Adjusts time Chronograph
counter-clockwise counter-clockwise split/reset
8: If the second hand moves to ▲ CHARGE position, this shows that the
Insufficient Charge Warning function is operating.
9: If the second hand moves to STOP position, this shows that the Stop
Warning Function is operating.
0: If the second hand moves to SET position, this shows that the Time
Setting Warning function is operating.
Full recharging time......The time from when the watch is stopped to when it is fully
recharged.
One day usage.............The recharging time required for the watch to run for one
day.
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TIME REQUIRED FOR CHARGING

Time required for recharge may vary according to the design (color of the dial, etc.) and operating environment. The following table will serve you as rough reference.
*The recharging time is the time when the watch is continuously exposed
to radiation.
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Illuminance
(lux)
500
Environment
Inside an ordinary
office
Time required
From the stop state
to the one second
movement
28 hours
One day
usage
2 hours
30 minutes
Empty
to full
220 hours
1000
60-70cm (24-28in.) under
a fluorescent light (30W)
13 hours 1 hour 105 hours
3000
20cm (8in.) under a
fluorescent light (30W)
4 hours
30 minutes
25 minutes 34 hours
10000 Exterior, cloudy
1 hour
30 minutes
8 minutes 10 hours
100000
Exterior, summer,
sunny
50 minutes 2 minutes 3 hours
(Empty to full)
Each press of the M button changes Time <TME> Calendar <CAL> Alarm <ALM> Chronograph <CHR>. Confirm the change with the mode hand. After that it returns to the time <TME> display.
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CHANGING THE MODES

Other than the time display, this watch has alarm and chronograph main display functions.
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Time mode
Displays present time in hours, minutes, seconds and 24-hours. Use the 24-hour hand to confirm am/pm.
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Calendar mode
Display alarm set time. The alarm setting is in 1 minute. Confirm of am/pm with the 24­hour hand. If the alarm is ON, it will ring at the set time for 15 seconds once every day.
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Alarm mode
Measures up to a maximum 60 minutes in 1/20 seconds, and displays split times. A confirmation rings when you start/stop or measure a split time.
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Chronograph mode
Displays current date by second hand (Month) and Date. Since the date and function hand are synchronized with each other, the function hand will turn at when correcting the date.
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Hour hand Minute hand
Month
(second hand)
Date
Minute hand
Alarm ON/OFF
1/20 second hand/minute hand
Hour hand Mode hand <ALM>
Second hand
Under the second hand
Mode hand <CHR>
Second hand
Mode hand <TME>
Mode hand <CAL>
24-hour
hand
24-hour
hand
M
MM
M

SETTING THE CALENDAR

Press button M to switch to the calendar mode <CAL>.
1. Pull button M out.
2. Press button A to correct the month number. Correction can be made by advancing by one month each time button A is pressed. The month number can be read directly from the normal hour positions. (Example: 3:00 March, 1:00 January) Correction can be made rapidly by holding button A down.
3. Press button B to correct the date. Correction can be made by advancing one day each time button B is pressed. The date advances one day when the function hand makes four turns. Correction can be made rapidly by holding button B down.
4. Push button M in to the normal position.
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SETTING THE TIME

Check that the mode hand is indicating <TME> and the watch is in time mode.
1. Pull the button M out, so that the second hand stops at the “0” position. When the watch is adjusted by button operation, the time setting is completed by electromagnetic correction. Time setting synchronizes the minute hand hour hand 24-hour hand. When adjusting the hour hand, check the 24-hour hand position (am/pm).
2. Set the time by pressing button B or button C.
Each time button B is pressed ....The watch advances 1 minute in a
clockwise direction.
Each time button C is pressed ....The watch turns back 1 minute in a
counterclockwise direction. Depress button B or button C continuously, the hands move rapidly. Turn the hands in the direction that is closest to set the time.
3. After setting the time, push the button M to the normal position and the watch will start at the correct time.
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Month (second hand)
Correction position
Date

USING THE ALARM

The alarm sounds once a day for 15 seconds at the alarm time set. Pressing any of buttons A, B or C stops the alarm ringing.

Setting the Alarm

Alarm setting is on a 24-hour system in 1 minute. The hands are moved thus: minute hand hour hand 24-hour hand.
1. Press button M to set the mode hand to <ALM> and switch to the alarm mode.
2. Pull button M out, to the alarm set time adjusting state.
3. Press button B or C to set the minute, hour and 24-hour hands to the desired time.
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* Since the date and function hand are synchronized with each other, the
function hand will turn at when correcting the date.
* Date correction at the end of each month is not required. However, since
February is set at 28 days, date correction must be performed for February only in leap years.

Leap year adjustment

1. Press button M to change the mode to <CAL>.
2. Pull out button M by one click.
3. Press button C for more than two seconds to set/cancel the leap year.
• The leap year is set if button C is continuously pressed when March 1 is displayed.
• The leap year is canceled if button C is continuously pressed when February 29 is displayed.
4. Push button M back into normal position.
* Once the leap year is set, February 29 is displayed once in every four
years.
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Reading the Chronograph Hands
• Function hand Chrono minutes or chrono 1/20 seconds. * The function hand moves every one minute.
Pressing button B while in chrono stop or split display, switches the function hand to show chrono 1/20 seconds.
• Second hand Chrono second hand.
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• Each time button B is pressed............The watch advances 1 minute in a
clockwise direction.
• Each time button C is pressed............The watch turns back 1 minute in a
counterclockwise direction.
* Depress button B or button C continuously, the hands move rapidly.

Switching the Alarm ON and OFF

Each time button A is pressed in the alarm mode, the alarm switches ON and OFF.

Alarm Sound Monitor

On the alarm mode (button M in normal position), pressing button A will sound the alarm for 5 seconds.
NOTE
• There may be some variation in the volume of the alarm sound,
depending on how much the secondary battery is charged.
• The alarm sound volume gets rather lower in the displays other than the
time display (calendar, alarm, chronograph, “0” position confirmation, and each display’s adjustment state). Once the alarm time has been set, use the watch normally in time display mode.
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Chronograph reset
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Chronograph
measurement
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Second hand (Chronograph seconds)
Function hand (Chrono minutes or chrono 1/20 sec.)

USING THE CHRONOGRAPH

Chronograph measurement is taken in 1/20 (0.05) seconds and can continue for 60 minutes max. Over 60 minutes, the watch enters the chronograph reset state.
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Chronograph Measurement

Chronograph standard or accumulated elapsed time measurement
1. Press button M to set the mode hand to <CHR> and get the chronograph display. At this time, the second hand and the function hand will return to the “0” position.
* The hour, minute and 24-hour hands
show the present time.
2. Each time button A is pressed, it repeatedly starts or stops the chronograph, along with a confirmation sound.
How to read each chronograph hand if the measured time when the chronograph is stopped is over 1 minute
1 Read the number of minutes with the function hand 2 Read the number of seconds with the second hand
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3 While pressing button B continuously, the function hand switches to 1/20
(0.05) second hand measurement, so read the value at that time. When button B is released, the function hand resumes showing chronograph minutes.
3. While the chronograph is stopped state, pressing button C resets the function hand and the second hand to the 0 position.
Reset
Pressing button A to repeat the chronograph start and stop cycle.
AA
C
Stop
Start

IN THESE CASES

When Shown the Insufficient Charge Warning Display
If the watch is put in the undercharged state during any display mode, it switches to the time display when in other display modes, then the second hand moves to the CHARGE position, indicating insufficiently charged. In such a case, expose the watch to sufficent light for the warning state to be cancelled. (The second hand returns to 1 second movement) It takes about 30 minutes to complete charging; from starting to expose the watch to light until this warning state is canceled. The charging time varies depending on the light (light source) that radiates over the watch.
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Chronograph Split Measurement

Pressing button C during chronograph measurement causes the chronograph split time to appear on display with a beep for confirmation. Press button C again, the next chronograph split time is displayed, along with a confirmation sound. The split time display is automatically cancelled after about 10 seconds, and the chronograph returns to the measurement state. During either chronograph split time display or measurement, pressing button A causes the chronograph stop to appear on display. In the chronograph stop state, pressing button C causes the chronograph reset.
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0
Reset
* During split time measurement or
while split time display, each time you press button C the next split time is displayed.
AC
A
A
C
C
Split
Stop
Measurement
Automatically cancelled after about 10 seconds
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When Shown the Time Setting Warning Display
If you expose a watch which has stopped once to light and recharge it, the second hand will move to the SET position to let you know that the time is incorrect. In such a case, readjust the hour, minute and 24­hour hands to keep correct time. Without adjusting the time hands after the watch is fully recharged, you cannot use such functions as alarm, chronograph, etc. properly. * Be careful because if the watch is not sufficiently
charged during the Time Setting Warning Display state, and if light is blocked from it, the second hand will change to the STOP position and the watch will stop running.
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When Shown the Stop Warning Display
If the watch is left intact in the undercharged state, about 5 days later the second hand will move to the STOP position, indicating that the watch has stopped due to insufficient recharge. * All functions are stopped in this state. In such a case, expose the watch to sufficent light for the warning state to be cancelled. After carrying out sufficient charging, it is necessary to reset the alarm time.
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“0” Position Adjustment
1. For adjusting second hand to "0" position:
• Press button A.
2. For adjusting hour, minute and 24-hour hands to "0" position:
• Press button C.
3. For adjusting date and function hand to position "1" and "0" respectively:
• Press button B.
• "0" position for function hand is equivalent to the 12 o'clock position just after date has been set at "1" position.
• With four turns of function hand, date indication is adjusted by a day.
• If button A, C or B is continuously pressed, the hand corresponding to the button moves quickly.
4. When "0" position adjustment is complete, push button M into the original position.
* Make sure to reset time, calendar, alarm time correctly following "0"
position adjustment.
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CHECKING AND ADJUSTING EACH HAND’S
“0” POSITION
The watch’s display may go wrong due to the effect of static electricity, strong shock, etc. In such a case, check and adjust the “0” position of each of the following hands.
“0” Position Checking
1. Press button M to set the mode hand at<CHR> position for chronograph function.
2. Pull out button M by one click and check to see if each of hour, minute, second, 24-hour and function hands quickly moves to "0" position (12 o'clock position) while date hand quickly moves to "1" position. If any hand returns wrong out of the correct position "0" or "1", the watch needs ["0" position adjustment].
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OFF
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PRECAUTIONS

1. Resistance to water
Check the chart to determine the water resistant properties of this watch.
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Indication
Watch
face
Caseback
Light spray, perspiration, light rain, etc.
OK NO
OK OK
OK OK
WATER RESIST
WATER RESIST
WATER RESIST
WATER
RESISTANT
(5 bar)
WATER
RESISTANT
(10–20 bar)
Swimming, etc.
“WATER RESISTANT” may sometimes be abbreviated as “WATER RESIST”
Water-related use
Skin diving (without air tank)
Scuba diving (Diving with air tank)
Operating the button when the watch is wet.
NO
NO NO
NO
NO NO
OK
NO NO
* Always set the button in the normal position.
6. Avoid harmful chemicals, solvents and gases
Avoid wearing your watch in the presence of strong chemicals, solvents and gases. If your watch comes in contact with materials such as gasoline, benzine, paint thinner, alcohol, spray cosmetics,nail polish, nail polish remover, adhesives or paint, discoloration, deterioration or damage to the case, band, and other components may occur.
7. Keep your watch clean
It may become difficult to pull out the button due to dirt and dust getting caught between the button and the watch case when the watch is worn for long periods of time. To help prevent this from happening, operate the button freely back and forth occasionally while it is in the normal set position. Wipe off any water and moisture that adheres to the case, glass and band with a soft, clean cloth. Any dirt left on the case or band may cause skin rash.
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2. Avoid temperature extremes
Avoid leaving your watch in extremely warm or cold locations for long periods of time.
• This may cause your watch to gain or lose time and affect its other function.
• Place your watch on your wrist to restore its original accuracy should it begin to gain or lose time.
3. Avoid strong shock
This watch will withstand the bumps and jars normally incurred while playing and during sports activities. Avoid dropping your watch on the ground or subjecting the watch to severe shock which may cause malfunction or damage.
4. Avoid strong magnetic fields
Keep your watch out of the immediate vicinity of strong magnets. Generally, your watch is not affected by magnetic fields from such household appliances as television sets and stereo equipment.
5. Static electricity
The integrated circuits used in the watch are sensitive to static electricity. If exposed to intense static electricity, the watch’s display may lose its accuracy.
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SPECIFICATIONS

1. Type.............................................Multi-Hand Analog Solar Power Watch
2. Caliber No....................................0870/0875
3. Time accuracy..............................±20 seconds per month
(temp. 5°C/41°F ~ 35°C/95°F)
4. Operational temperature range....–10°C ~ +60°C/14°F ~ 140°F
5. Display functions: Time...............Hour, minute, second and 24-hour hands
Calendar........Month, date
Alarm.............
Hour, minute and 24-hour hands, alarm ON/OFF
Chronograph..
Minute, second and 1/20 (0.05) second hands
6.
Additional functions:
Alarm.............Daily alarm (sounds for about 15 seconds)
Alarm monitor (Sounds for about 5 seconds)
Chronograph..Measurement is taken in 1/20 seconds and
for 60 minutes max. (A beep for start/stop/ split confirmation will sound when the associated button is pressed.)
Insufficient Charge Warning Function Stop Warning Function Time Setting Warning Function Overcharge Prevention Function
7. Secondary Battery Used..............Titanium Lithium Ion secondary battery
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A watchband will easily become soiled with dust and perspiration because it is in direct contact with the skin. Even a stainless or gold-plated band may begin to corrode if it has not been cleaned for a long period of time. Mesh bands, because the meshes are very fine, will lose their particular “flexibility” if they are left soiled for a long time. Metal watchbands should be washed periodically to keep them looking beautiful at all times. Metal watchbands are usually washed with a brush in mild, soapy water and well wiped with a soft, absorbent cloth to make sure all water is removed. Pay attention to prevent any water from getting inside your watch when the band is washed.
8. Periodic inspection
Getting your watch checked once every year or two is recommended to ensure long use and trouble-free operation.
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