Citizen H486 User Manual

137

Repairs

All repairs performed on this watch, with the exception of repair of the band, are to be performed at CITIZEN. This is because special technologies and equipment are required to perform repairs, inspections and adjustments. Please make requests for repairs to Citizen Service Center when having your watch repaired.

English

138 139

This radio wave watch receives standard time radio signals broadcast in the People’s Republic of China in order to adjust the time and date.

• Only standard time radio signals broadcast from in the People’s Republic of China (BPC) are received.

• The radio wave watch has no effect on the human body or medical equipment.

Fully charge your watch before use by exposing it to sufficient light.

The second hand will move at 2-second intervals when the watch is insufficiently charged. Charge your watch as indicated in “Guide to Charging Time” on page 180.

• Charge the watch in direct sunlight for a whole day once a month.

NO: Reception status NO

Second hand

Hour hand

Crown for turning the outer scale

Button (A)

Crown

Minute hand

Button (B)

H, M, L: Reception level/ reception status

RX: Reception standby

• This watch indicates the reception level and reception status with the short side of the second hand.

• The illustrations shown in this manual may differ from the actual watch you have purchased.

140 141

1. Your Watch................................................................................................. 142

2. Operating the Crown ................................................................................. 143

3. Before Use ................................................................................................... 144

A. Check the Movement of the Second Hand .......................................... 144

B. Check the Reference Position ............................................................... 146

4 . Functions List ............................................................................................. 148

Radio Signal Reception

5. Reception..................................................................................................... 150

6. Poor Reception Areas................................................................................. 153

7. Position of the Second Hand During Reception ...................................... 154

8. Confirming Reception Status .................................................................... 155

9. Reception Area Standards......................................................................... 156

Manually Setting the Time and the Date

10. Setting the Time.......................................................................................... 158

11. Setting the Calendar................................................................................... 160

Table of Contents

Correcting the Time Difference............................................................................ 164

12. Adjusting the Reference Position.............................................................. 166

Troubleshooting ..................................................................................................... 168

Solar Power

13. Solar Power Function................................................................................. 172

14. Characteristics of the Solar Powered Watch........................................... 174

A. Power Saving Function ......................................................................... 176

B. Insufficient Charge Warning Function ............................................... 178

C. Overcharging Prevention Function ..................................................... 179

D. Guide to Charging Time ....................................................................... 180

E. Handling Your Solar Powered Watch ................................................. 182

15. Using the Slide Rule Bezel ......................................................................... 184

16. Precautions.................................................................................................. 196

17. Specifications .............................................................................................. 202

142 143

1. Your Watch

This watch automatically receives standard time radio signals broadcast from radio signal transmitters in the People’s Republic of China (BPC), which contain information that automatically adjusts the time and the date of your watch. (P. 150) i Regular automatic reception: The watch will automatically receive the radio signals at 2

a.m. every day and adjust the time and date accordingly. If a signal cannot be received at 2 a.m., it will try again automatically at 4 a.m.

i On demand reception function: The radio signals can be received at the desired time to

adjust the time and date. * Not possible when the radio wave is interrupted.

<Eco-Drive Function>

This solar powered Eco-Drive watch is powered by photo energy converted into electrical energy. i Power saving function: If the watch face is not exposed to light for one week or longer,

the hands are stopped in order to restrict the power consumption of the watch. (P. 176)

i Time difference correction function: A simple method is available for changing to the

local time if you are going to an area in a different time zone. (P . 164)

2. Operating the Crown

There are two models available for the crown: normal and screw lock.

• When the screw lock is released, the crown pops out a little and stops in the normal position. After finishing the operation, lock the crown again.

With the crown in position 1 or position 2, quickly and continuously turn the crown clockwise or counterclockwise by two clicks or more to make a hand (hour, minute or second hand) move continuously. To stop the continuous movement of the hands, turn the crown clockwise or counterclockwise by one click. * Your fingertips will feel the crown click slightly.

• Turn the crown counterclockwise.

Using the side of your finger, quickly turn the crown by two or more clicks.

Turn counterclockwise.

144 145

Check the movement of the second hand.

Charge the watch sufficiently by placing it in direct sunlight as indicated in “Guide to Charging Time” on page 180.

The second hand is moving at 2-second intervals or is stopped.

Check the reception status by pressing button (A) once which is located at the 4:00 position.

The second hand shows H, M, L as a reception status.

The second hand shows NO as a reception status.

Your watch is correctly receiving the standard time radio signal. It is ready to use.

Perform on demand reception as indicated in “On Demand Reception” on page 151.

The second hand is moving at 1-second intervals.

3. Before Use

A. Check the Movement of the Second Hand

NO: Signal reception failed

RX: Reception standby

Reception level/reception status H : High M : Middle L : Low

Button (A)

147146

B. Check the Reference Position

Before using the watch, check that the hands are aligned with “0”, similar to when setting weighing scales

i The reference position may become misaligned by environmental factors such as

magnetism, static electricity or an external impact. Even if radio signals are received, if the watch hands are not aligned to the correct reference position, it will not be possible to indicate the correct time. Check that the hands are properly aligned with “0”.

Examples of magnetic products that can affect the watch

• Health products (for example, medical necklaces and waist bands that have magnetic fields)

• Refrigerators (magnetic part of the door)

• Electromagnetic cookers

• Bags (with magnet fasteners)

• Mobile phones (speaker part) Keep the watch away from items similar to those above.

The reason why analog quartz watches are affected by strong magnetic fields: The step motor operates through a magnet, so when it is exposed to a strong external magnetic field, the motor operation is affected and the correct time is no longer displayed.

[Checking the Reference Position]

(1) With the crown in the normal position, press and hold button (B) for more than 5

seconds, and release when the second hand starts to move.

(2) All the hands and the date will move rapidly, stopping at the reference position.

* This could take up to a maximum of about 7 minutes.

(3) If the reference position is correct, the check is complete.

If an incorrect position is indicated, the reference position must be adjusted.

(4) After completing the check, press button (B) once to return to the original time.

Refer to “Adjusting the Reference Position” on page 166.

Button (B)

Correct reference position indication

Time: 00:00:00 Date: Between 31 and 1

148 149

Hand Movement

The second hand will stop in the RX position and then move to the H, M or L level. If the reception level is not shown, normal hand movement will return without a signal being received.

The second hand will stop at H, M, L or NO.

The second hand will stop at the 12:00 position. (If a time difference setting has been made, it will stop at the position appropriate for the time difference.) Turn the crown clockwise to move ahead by 1 hour and turn it counterclockwise to move back by 1 hour.

Second hand: Turn the crown clockwise to rotate the second hand clockwise once and move the minute hand

ahead by 1 minute. Turn the crown counterclockwise to rotate the second hand counterclockwise once and move the minute hand back by 1 minute. * Turn the crown quickly to advance rapidly.

Hour hand, date: Turn the crown clockwise to move the hour hand ahead by 1 hour.

Turn the crown counterclockwise to rotate the hour hand counterclockwise and back by 1 hour. * Turn the crown quickly to advance rapidly. * The hour hand and the date are linked together. Move the hour hand to change the date.

The second hand will stop at the “Elapsed years after the most recent leap year” position recorded in the watch memory. Turn the crown clockwise to move the second hand ahead by 1 step and turn it counterclockwise to move it back.

* Turn the crown quickly to advance rapidly.

Function

On Demand Reception (P. 151)

Confirming Reception Status (P. 155)

Correcting the Time Difference (P. 164)

•

Manually Setting the Time (P. 158)

• Manually Setting the

Calendar (P. 160) (Elapsed years after the most recent leap year)

Button or Crown Operation

Press and hold button (A) for more than two seconds and release when the second hand stops in the RX position.

Press button (A) once.

Press button (B) once and turn the crown.

Pull out the crown to position 2.

Press button (A) once.

* The adjustment changes between

the minute hand and hour hand each time button (A) is pressed.

Pull out the crown to position 1.

4. Functions List

Crown

Button (B)

Button (A)

150 151

5. Reception

Three types of radio signal reception are possible: regular automatic reception, on demand reception and automatic reception recovery.

Regular Automatic Reception

(To receive signals automatically)

• It is not necessary to operate buttons during regular automatic reception.

1. Remove the watch from your wrist and place on a

stable surface near a window, with the 9:00 position (antenna for receiving the radio signals side) facing in the direction of the radio signal transmitter from which the radio signal can be easily received.

2. The watch will receive the radio signals at 2 a.m.

every day. If a signal cannot be received at 2 a.m., it will try again automatically at 4 a.m. and the time will be adjusted.

On demand reception (Manual reception)

• Signals can be received at any time in this mode.

* Not possible when the radio wave is interrupted.

Use this function when regular automatic reception is impossible due to changes in the reception environment.

• Step

1. Find the direction of the radio signal transmitter.

2. Remove the watch from your wrist and place on a stable surface near a window where the radio signal can be easily received.

3. Point the 9:00 position of the watch in the direction of the radio signal transmitter, and press and hold button (A) for more than 2 seconds. Release when it stops at RX.

4. The second hand will then move to H, M or L.

An antenna for receiving the radio signals is located inside the watch (on the 9:00 position).

Radio Signal Reception

[Reception standby] [Receiving signal] [Reception completed]

RX (Reception standby)

The second hand returns to 1-second interval movement.

Reception level (H, M, L)

152 153

5. Do not move the watch during reception.

6. When the signal has been properly received, the second hand will automatically move from H, M or L to the time that was received, all the hands will be adjusted, and the second hand will return to 1-second interval movement.

• The reception level may be affected by the surroundings in which the watch is being used. While referring to reception levels H, M and L, keep changing the watch direction or location and try to receive the signals.

Automatic Reception Recovery

i After the watch has stopped due to an insufficient charging, charge the watch in

sunlight sufficiently. When the watch is recharged sufficiently, it will automatically receive the radio signal once. Regularly charge your watch so that it does not become insufficiently charged. To confirm, refer to “Confirming Reception Status” on page 155.

• When the watch is receiving the radio wave signal, all of the hands will stop. To check the time, hold button (A) for 2 seconds to cancel radio wave reception. The hands will then return to the current time.

6. Poor Reception Areas

It may be difficult to properly receive the radio signals under certain environmental conditions or in areas susceptible to radio noise.

j Extremely hot or cold

locations

j Near cellular

phones in use

j Inside vehicles,

including cars, trains and aero planes

j Near TVs, refrigerators,

computers, fax machines and other home electronic devices or electrical appliances

j Inside reinforced concrete

buildings, or underground

j Near high-tension electrical

lines, railway overhead wires or communication facilities

154 155

8. Confirming Reception Status

i The reception status can be confirmed.

Step 1: Press button (A) once to confirm the reception status. The second hand will move to

H, M, L or NO.

Step 2: The reception status will be indicated for 10 seconds before the watch automatically

returns to normal hand movement. You can also press button (A) again while the reception status is indicated to return to 1-second interval movement.

• If NO is indicated, find a location or direction where the reception is better and perform “On Demand Reception” again.

7. Position of the Second Hand During Reception

[Reception standby] [Receiving signal] [Reception completed]

j Second hand moves to

RX and stops.

j The second hand will move

from RX to reception level H, M or L and will begin receiving signals.

When reception is successful, the second hand will return to 1-second interval movement and the positions of the other hands will be automatically adjusted.

Reception can take from between about 2 minutes to a maximum of 15 minutes, depending on factors such as the weather or noise. If the signal reception fails, the watch may return immediately to the normal indication.

NOTE:

If the signal is blocked while it is being received due to changes in the environment or other factors, the second hand may rotate once and show the reception level again. Do not move the watch until the second hand has returned to moving at 1-second intervals.

* H, M and L only indicate the reception level, and do not affect the

performance.

Reception level

Reception status

Received at a strong reception level Received at a quite strong reception level Received at a weak reception level

Signal reception failed

156 157

Beijing

Shanghai

CHINA

TAIWAN

Hong Kong

Taipei

9. Reception Area Standards

The map shows a standard of the reception area. However, note that the signal condition could change due to factors including the weather (such as lightning) and changes in the season or sunrise/sunset time. The reception area on the map should be used only as a standard, and it may be difficult to receive the radio signal even within the areas indicated on the map.

Location of the radio signal transmitter

Shanggiu, Henan

Standard time radio signal

BPC

The standard time radio wave used by this radio controlled watch is broadcast almost continuously, but may be interrupted occasionally due to special circumstances at the radio wave transmitter. Radio waves cannot be received during this period. Even if reception of the standard time radio signal has failed, the watch will continue to be accurate to within ±15 seconds per month.

158 159

10. Setting the Time

When using the watch in an environment where radio signals cannot be received, manually adjust the time and the date.

• After pulling out the crown to position 2, press button (A) to repeatedly change between [Second Hand/Minute Hand] adjustment and [Hour Hand/Date] adjustment.

Step 1: Pull out the crown to position 2.

• The second hand will stop at the 0 second position.

Step 2: Turn the crown to set the minute hand.

(1) Turn clockwise by 1 click to rotate the second

hand clockwise once and to move the minute hand ahead by 1 minute.

(2) Turn counterclockwise by 1 click to rotate the

second hand counterclockwise once and to move the minute hand back by 1 minute.

• Continuously turn the crown by 2 or more clicks to make the second and minute hands move continuously.

Turn the crown by one click clockwise or counterclockwise to stop the continuous movement of the hands.

Step 3: Press button (A) once to enter the hour hand/date

adjustment mode. (1) Rotate the crown clockwise by one click to

move the hour hand ahead by 1 hour.

(2) Rotate the crown counterclockwise by one

click to move the hour hand back by 1 hour.

• Turn the crown by two or more clicks to make the hour hand move continuously.

(3) The hour hand and the date are linked together.

Move the hour hand continuously to change the date.

NOTE:

The date changes at midnight. Pay close attention to a.m. and p.m. when setting the date.

Step 4: Set the time by using a time signal, and then press the crown back into its normal

position.

Crown in position 2

Button (A)

Manually Setting the Time and the Date

11. Setting the Calendar

Step 1: Pull out the crown to position 1.

• The watch will enter the calendar adjustment mode and the second hand will stop at the month and elapsed year positions recorded in the watch memory.

Step 2: Use the quick reference for the elapsed years after the most recent leap year to

confirm the number of elapsed years, and turn the crown clockwise by one click to align the second hand with the month and elapsed years. Turn the crown counterclockwise by one click to move the second hand counterclockwise.

• Turn the crown by two or more clicks to make the second hand move continuously. Turn the crown by one click clockwise or counterclockwise to stop the continuous movement of the hands.

160 161

* Reading the Month Shown by the

Second Hand

Second hand between 1:00 and 2:00: January Second hand between 2:00 and 3:00: February

Second hand between 12:00 and 1:00: December

Leapyear

y

Leapyear

year

Leapyear

year

Leapyear

year

y

ecember

January

February

April

zone

Crown in position 1

162 163

Quick reference for the elapsed years after the most recent leap year

Year

2004 2005 2006 2007

Elapsed years

Leap year

year

Year

2008 2009 2010 2011

Elapsed years

Leap year

year

Year

2012 2013 2014 2015

Elapsed years

Leap year

year

* Reading the Elapsed Years Shown by the Second Hand

Leap year: The second hand points to the 1

position in each month zone

year after the most recent leap year: The second hand points to the 1stposition in

each month zone

year after the most recent leap year: The second hand points to the 2ndposition in

each month zone

year after the most recent leap year: The second hand points to the 3rdposition in

each month zone

Example:

• April of the 3

year after the most recent leap year Read the elapsed years after the most recent leap year from the quick reference for the elapsed years.

• Align the second hand with the 23 seconds position (in the zone between 4:00 and

5:00).

Step 3: Press the crown back into its normal position.

Leapyear

year

April

The watch can be adjusted to the local time when going to an area in a different time zone, by using the second hand to set the time difference in units of 1 hour.

Step 1: Press button (B) once and the second hand

will stop in the 12:00 position. The second hand 12:00 position indicates a time difference of ±0 hours.

* If a time difference setting has been made, it

will stop at the position appropriate for the time difference.

Step 2: Do not pull out the crown. Turn the crown

clockwise by 1 click to set a time difference of +1 hour with 1 step of the second hand. Turn the crown counterclockwise to set a time difference of -1 hour with 1 step of the second hand.

• The 12:00 position of the second hand is Chinese time. A time difference in a range of ±27 hours relative to Chinese time can be set.

164 165

Step 3: Press button (B) once after setting the time difference to return to 1-second interval

movement. Alternatively, do not perform any operations for 10 seconds and the watch will indicate the time difference setting time and then return to 1-second interval movement.

Button (B)

Example: When going to an area with a time difference of +1 hour relative to China, align the second hand with the 1 second position.

±0

+10

+27

Correcting the Time Difference

Step 3: Press button (A) once and turn the crown to set the minute and second hands.

(1) Turn the crown clockwise by 1 click to rapidly move the second hand ahead by 1

minute and turn it counterclockwise to move it back.

(2) Continuously turn the crown by 2 or more clicks to rapidly rotate the second

hand. Since the minute hand and the second hand are linked together, the minute hand will move continuously.

Step 4: After adjusting the reference position, return the crown to the normal position, and

press button (B) once to make the hands and the date rapidly return to the current time.

• This completes the reference position adjustment, but if the watch does not return to the current time, perform “On Demand Reception” on page 151.

166 167

12. Adjusting the Reference Position

• After pulling out the crown to position 2, press button (A) to repeatedly change between [Second Hand/Minute Hand] adjustment and [Hour Hand/Date] adjustment.

Step 1: Press and hold button (B) for more than 5 seconds, release when the second hand

starts to move rapidly and immediately pull out the crown to position 2.

Step 2: Align the date between 31 and 1.

(1) Continuously turn the crown by 2 or more clicks. Since the hour hand and the

date are linked together, the date will change when the hour hand is moved continuously.

(2) When 31 and 1 are visible in the frame on the

watch face, move the crown clockwise or counterclockwise to make the hour hand stop in the 0:00 position.

Button (B)

Button (A)

169

Problem Check Remedy

Radio signals cannot be received.

• Are there objects nearby that could block radio signals or generate noise?

Are you attempting to receive the radio signal in a location far from a window?

• Avoid objects that block radio signals or generate noise. Try to receive radio signals by pointing the 9:00 position of the watch in the direction of the radio signal transmitter. Find a location such as window that is conducive to radio signal reception and change the watch location, direction and angle. (P. 153)

168

Consult the following chart:

Problem Check Remedy

Radio signals cannot be received.

• Radio waves may be interrupted occasionally due to special circumstances at the radio wave transmitter.

• Are you moving the watch while receiving a signal and the second hand is showing RX, H, M or L?

• Try to receive the wave again after a few hours.

• Do not move the watch until the signal has been properly received (until normal hand movement returns).

Troubleshooting

170 171

Problem Check Remedy

Radio signals cannot be received.

Does not receive radio signals.

• Is the watch moving at 2second intervals?

• Does the second hand move to the reception standby (RX) position?

• The watch changes to 2-second interval movement if the battery voltage is low. At this time, neither on demand reception nor regular automatic reception can be performed. Charge the watch sufficiently by placing it in sunlight.

• Press and hold button (A) until the second hand indicates the reception standby (RX) position, and then release.

Problem Check Remedy

The watch can receive the radio signal, but it does not show the correct time.

• Is the reference position set correctly?

Check the Reference Position. (P. 146)

• Even if radio signals are received, if the watch hands are not aligned to the correct reference position, it will not be possible to indicate the correct time.

If the reference position is not correctly set, adjust it as indicated in “Adjusting the Reference Position” on page 166.

172 173

13. Solar Power Function

This watch uses a secondary battery to store electrical energy. When the watch is fully charged, it will maintain its accuracy for about 6 months.

Always store the watch in a bright location for best results.

j Placing the watch near a window where its face can

receive sunlight or near another source of light when you are not wearing it will ensure that the watch is regularly charged, allowing it to maintain its accuracy.

j Charge watch by exposing the watch face to direct

sunlight or to a fluorescent lamp.

j Wearing clothes with long sleeves makes it difficult

for the watch to get the necessary light, resulting in

insufficient charging. It is recommended that the watch is charged in direct sunlight once a month.

NOTE:

Do not charge on surfaces that can easily become hot, such as a car dashboard.

Solar power

174 175

14.

Characteristics of the Solar Powered Watch

i When the watch is insufficiently charged, the indication will be changed as follows:

* 1. The watch stopped due to insufficient charging.

• It takes at least 30 minutes to recharge sufficiently to perform automatic reception recovery, even if the watch is being exposed to light.

After recovery, refer to “Guide to Charging Time” on page 180 and sufficiently charge the watch.

* 2. The watch failed to perform automatic reception recovery

• The time is incorrect even if the second hand moves at 1-second intervals, so after fully charging the watch, set the time manually or with on demand reception.

[Normal Indication] [Insufficient Charge Warning] [Automatic Reception Recovery]

The watch has been insufficiently charged because the watch face, which contains the solar cell, has not received sufficient light.

The second hand will begin a 2-second interval movement.

When a radio signal has been successfully received *2

The watch will stop due to an insufficient charging.

Sufficiently charge by exposing the watch face, which contains the solar cell to light. *1

2-second interval movement

When the watch is recharged sufficiently, it will receive the radio signal automatically once.

The insufficient charge warning (a 2-second interval movement) continues for more than 4 days

176 177

A. Power Saving Function

If the watch face is kept in a place with no light for 1 week, the hands will stop at the 12:00 position and the watch will enter power saving mode.

[The following functions are available even during power saving mode]

• Regular automatic reception. The watch will receive the radio signals at 2 a.m. every day. If a signal cannot be received at 2 a.m., it will try again automatically at 4 a.m.

• The time is always being kept inside the watch.

• The date will stop at the position between yesterday and today. Thereafter the date will be automatically adjusted once every day at midnight.

The power saving mode will be automatically canceled when the watch face is exposed to light.

• After the power saving mode has been canceled, the hands will rapidly move to the current time and return to 1-second interval movement.

• If the watch is insufficiently charged, the second hand will begin the 2-second interval movement. When this happens, sufficiently charge the watch so that it returns to 1second interval movement.

NOTE:

• Although the watch will continue to automatically receive radio signals when in the

power saving mode, it may not be able to receive the signals depending on the environmental in which the watch is stored. After the power saving mode has been canceled, press button (A) once to see the reception status. If the time is incorrect, use on demand reception to set the correct time before using the watch.

• The power saving mode cannot be canceled with crown or button operations.

Cancel the mode by placing the watch in light.

The hands will stop at the 12:00 position and the date will stop at the position between yesterday and today.

178 179

B. Insufficient Charge Warning Function

The second hand’s movement changes from 1-second intervals to 2-second intervals to show that the watch is insufficiently charged. The watch will stop due to insufficient charging about 4 days after starting the 2second interval movement if kept in a place with no light.

NOTE:

If the second hand is moving in 2-second intervals, the time cannot be adjusted manually, or by using regular automatic reception or on demand reception.

j If the charging insufficiency occurs during “Radio signal reception”, “Confirming

reception status”, “Time difference correction” or “Checking/adjusting the reference position”, the operation will stop automatically, the watch will return to the time before the operation, and 2-seconds interval movement will begin. Regularly charge your watch so that it does not become insufficiently charged.

C. Overcharging Prevention Function

No matter how much the watch is charged, it will not affect the secondary battery, timekeeping, functions or performance of the watch. Whenever the secondary battery becomes fully charged by exposing the watch face to light, the overcharging prevention function is automatically activated to prevent the battery from being charged further.

2-second interval movement

180 181

For a 1-day movement charging time

The charging time to run the watch for one day with normal movement.

Time for full charging

The time for full charging after the watch has stopped due to an insufficient charging.

NOTE: A fully charged battery will run the watch for about 6 months without further

charging.

The watch will maintain its accuracy for about 2 years when running in the power saving mode. Charge the watch every day, as it will take a long time to recharge it, as is indicated in the table, when it stops due to an insufficient charging. It is recommended that the watch is charged in direct sunlight once a month.

D. Guide to Charging Time

The charging time varies according to the model (including the color of the watch face). The following should only be used as a guideline.

Luminescence

(lx)

500

1,000

3,000

10,000

100,000

Environment

Indoor lighting

Charging time (approximate)

3 hours

1.5 hours

30 minutes

8 minutes

2 minutes

Time from stopping

to resuming the

1-second interval

movement

-----

35 hours

10 hours

3.5 hours

1 hour

Time for full

charging

-----

130 hours

40 hours

8.5 hours

60–70 cm (24–28 in) beneath a 30 W fluorescent light

20 cm (8 in) beneath a 30 W florescent light

Cloudy sky

Direct summer sunlight

For a 1-day movement

* The charging time is based on continuous exposure.

* If the second hand is moving at 2-second intervals, refer to “Time for full charging”

and charge sufficiently.

182 183

E. Handling Your Solar Powered Watch

WARNING Handling the Secondary Battery

j Do not remove the secondary battery from the watch yourself, unless unavoidable.

If you must remove the battery, store it out of reach of children to avoid accidental ingestion. If the secondary battery is ingested, consult a doctor immediately.

j Do not throw away with regular trash.

Doing so could cause a fire or environmental damage. Follow the collection procedures as specified by your local authority.

WARNING

Do not use anything other than the specified secondary battery

j The watch will not operate if incorrect battery types are inserted.

Never use a regular silver battery. The battery could overcharge during the charging process and burst, causing damage to the watch or injuries to the wearer.

CAUTION

Charging Precautions

j Do not charge the watch in a high-temperature environment (about 60°C/140°F or

more). Overheating while charging can cause the watch exterior to become discolored, the watch to deform or the movement to be damaged.

Example:

• Charging close to incandescent lighting, halogen lamps, or other lighting sources that easily become hot.

• Charging on surfaces that can easily become hot, such as a car dashboard.

j When charging with incandescent lighting, halogen lamps, or other lighting sources

that easily become hot, place the watch at least 50 cm (20 in) away from the source to avoid overheating.

185

A. Navigation Calculator

1. Calculation of time required

Problem: How long does it take an airplane flying at 180 knots to fly a distance of 450

nautical miles?

Solution: Set the 18 mark on the outside scale to the SPEED INDEX (Y). At this

time, the point on the inside scale that is aligned with 45 on the outside scale indicates (2:30), and the answer is 2 hours and 30 minutes.

15. Using the Slide Rule Bezel

Flying distance and other navigation calculations as well as general calculations can be performed using the slide rule bezel located around the outside of the dial. This slide rule bezel is not able to display decimal places for calculation results, and should only be used as a general reference as an alternative to more accurate calculations. Turning the crown at the 8:00 position allows the slide rule bezel around the dial(Outside Scale) to be rotated.

184

Crown for turning the outer scale

Inside scale

Outside scale

187

3. Flying distance calculation

Problem: What is the flying distance traveled in 40 minutes at a speed of 210 knots? Solution: Align the 21 on the outside scale with the SPEED INDEX (Y) of the inside

scale. The 40 of the inside scale is now pointing to 14, and the answer is 140 nautical miles.

186

2. Speed (Ground Speed) Calculation

Problem: What is the speed (ground speed) of an airplane when it takes 1 hour and 20

minutes to fly a distance of 240 nautical miles?

Solution: Align the 24 on the outside scale with 1:20 (80) on the inside scale. At this

time, 18 is aligned with the SPEED INDEX (Y) on the inside scale, and the answer is 180 Kt.

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5. Fuel consumption calculation

Problem: How much fuel is consumedin 6 hours at a fuel consumption rate of 250

gallons per hour?

Solution: Align the 25 of the outside scale with the inside scale’s SPEED INDEX (Y)

of the inside scale. The 6:00 is aligned with 15, and the answer is 1500 gallons.

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4. Fuel consumption rate calculation

Problem: If 120 gallons of fuel are consumed in 30 minutes’ flying time, what is the

fuel consumption rate?

Solution: Align the 12 of the outside scale with 30 of the inside scale. The SPEED

INDEX (Y) now points to 24, and the answer is 240 gallons per hour.

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7. Conversion

Problem: How do you convert 30 miles into nautical miles and kilometers? Answer: Align the 30 on the outside scale with the STAT (Y) mark on the inside

scale. At this time, 26 nautical miles is aligned at the NAUT (Y) mark on the inside scale, while the answer of 48.2 kilometers is aligned at the kilometers on the inside scale.

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6. Maximum flying hours

Problem: With a fuel consumption rate of 220 gallons per hour and a fuel supply of

550 gallons, what is the maximum number of flying hours?

Solution: Align the 22 of the outside scale with the inside scale’s SPEED INDEX (Y)

of the inside scale. The 55 of the outside scale is now aligned with 2:30, and the answer is 2 hours and 30 minutes.

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2. Division

Problem: 250/20 Solution: Align 25 on the outside scale with 20 on the inside scale. On the outside

scale read the 12.5 mark that is aligned with on the inside scale. figure the number of decimal places, and the answer is 12.5.

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B. General calculation functions

1. Multiplication

Problem: 20

M 15

Solution: Align 20 on the outside scale with on the inside scale, and read the

outside scale at the 30 mark which is aligned with 15 of the inside scale. Figure the number of decimal places, and the answer is 300. Remember: decimal places cannot be read on this scale.

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4. Determining Square Root

Problem: What is the square root of 225? Solution: Rotate the scales so that the value on the inside scale corresponding to 22.5

on the outside scale is equal to the value on the outside scale corresponding to on the inside scale, and read off the answer of 15 at that location.

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3. Reading Ratios

Problem: 30/20 = 60/x Solution: Align 30 on the outside scale with 20 on the inside scale. At this time, the

answer of 40 can be read from the inside scale corresponding to 60 on the outside scale. In addition, the ratio of the value on the outside scale to the value on the inside scale is 30:20 at all positions on the scales.

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NO NO NO NO

OK NO NO NO

OK OK NO NO

Moderate exposure to

water (washing, kitchen

work, swimming, etc.)

Marine sports

(skin diving)

Scuba diving

(with air tank)

Examples of use

For correct use within the design limits of the watch, confirm the level of waterresistance of your watch, as indicated on the dial and case, and consult the table.

Operation of the

crown or button

with moisture visible

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Minor exposure to water (washing face, rain, etc.)

Indication

WATER RESIST

or no indication

WATER

RESIST(ANT)

Water-resistant to

3 atmospheres

WR 50 or WATER

RESIST 50

WATER RESIST(ANT) 5 bar or WATER RESIST(ANT)

Water-resistant to

5 atmospheres

WR 100/200 or

WATER RESIST

100/200

WATER RESIST(ANT)

10bar/20 bar or

WATER RESIST(ANT)

Water-resistant to

10/20 atmospheres

Dial

Case

(case back)

Specifications

16. Precautions

WARNING: Water-resistance performance

There are several types of water-resistant watches, as shown in the following table.

The unit "bar" is roughly equal to 1 atmosphere. * WATER RESIST(ANT) xx bar may also be indicated as

W.R. xx bar.

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• If seawater enters the watch, place the watch in a box or plastic bag and immediately take it in for repair. Otherwise, pressure inside the watch will increase, and parts (crystal, crown, buttons, etc.) may come off.

CAUTION: Keep your watch clean.

• Leaving dust and dirt deposited between the case and crown may result in difficulty in pulling the crown out. Rotate the crown while in its normal position, from time to time, to loosen dust and dirt and then brush it off.

• Dust and dirt tend to be deposited in gaps in the back of the case or band. Deposited dust and dirt may cause corrosion and soil your clothing. Clean the watch occasionally.

Cleaning the Watch

• Use a soft cloth to wipe off dirt, perspiration and water from the case and crystal .

• Use a soft, dry cloth to wipe off perspiration and dirt from the leather band.

• To clean a metal, plastic, or rubber watchband, wash away dirt with mild soap and water. Use a soft brush to remove dust and dirt jammed in the gaps in the metal band. If your watch is not water-resistant, take it to your dealer.

NOTE: Avoid using solvents (thinner, benzine, etc.), as they may damage the finish.

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WARNING:

Water-resistance performance

• Water-resistance for daily use (to 3 atmospheres): This type of watch is water-resistant to minor exposure to water. For example, you may wear the watch while washing your face; however, it is not designed for use underwater.

• Upgraded water-resistance for daily use (to 5 atmospheres): This type of watch is waterresistant to moderate exposure to water. You may wear the watch while swimming; however, it is not designed for use while skin diving.

• Upgraded water-resistance for daily use (to 10/20 atmospheres): This type of watch may be used for skin diving; however, it is not designed for scuba or saturated diving using helium gas.

CAUTION

• Be sure to use the watch with the crown pressed in (normal position). If your watch has a screw-lock type crown, be sure to tighten the crown completely.

• Do NOT operate the crown or button with wet fingers or when the watch is wet. Water may enter the watch and compromise water-resistance.

• If the watch is used in seawater, rinse with fresh water afterward and wipe with a dry cloth.

• If moisture has entered the watch, or if the inside of the crystal is fogged up and does not become clear within a day, immediately take the watch to your dealer or Citizen Service Center for repair. Leaving the watch in such a state will allow corrosion to form inside.

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• Avoid using the watch in an environment where it may be exposed to chemicals or corrosive gases. If solvents, such as thinner and benzine, or substances containing such solvents come in contact with the watch, discoloration, melting, cracking, etc. may result. If the watch comes in contact with mercury used in thermometers, the case, band or other parts may become discolored.

Periodical inspections

Your watch needs inspection once in every two or three years for safety and long use. To keep your watch water-resistant, the packing needs to be replaced regularly. Other parts need to be inspected and replaced if necessary. Ask for Citizen geuine parts upon replacement.

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CAUTION:

Operating environment

• Use the watch within the operating-temperature range specified in the instruction manual. Using the watch where temperatures are outside the specified range, may result in deterioration of functions or even stoppage of the watch.

• Do NOT use the watch in places where it is exposed to high temperature, such as in a sauna. Doing so may result in a skin burn.

• Do NOT leave the watch in a place where it is exposed to high temperature, such as the glove compartment or dash-board of a car. Doing so may result in deterioration of the watch, such as deformation of plastic parts.

• Do NOT place the watch close to a magnet. Timekeeping will become inaccurate if you place the watch close to magnetic health equipment such as a magnetic necklace or a magnetic latch of a refrigerator door or handbag clasp or the earphone of a mobile phone. If this has occurred, move the watch away from the magnet and reset the time.

• Do NOT place the watch close to household appliances that generate static electricity. Timekeeping may become inaccurate if the watch is exposed to strong static electricity, such as is emitted from a TV screen.

• Do NOT subject the watch to a strong shock such as dropping it onto a hard floor.

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• Reference position checking/adjustment function

• Solar power function

• Power saving function

• Insufficient charge warning function (2-second interval movement)

• Overcharging prevention function

• Time from a full charge until the watch stops without charging

7. Duration:

: About 2 years (when in the power saving mode) : About 6 months (when not in the power saving mode)

Note that this duration may vary depending on the number of times that signals are received.

• Time from insufficient charge warning to watch stopping : About 4 days

8 Battery: Secondary battery 1

* Specifications may change without notice.

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17. Specifications

1. Cal. No.: H486

2. Type: Analogue Solar Powered Watch

3. Time accuracy: Without reception (when watch is not receiving a radio signal)

±15 seconds per month on average (at a room temperature of +5°C/41°F to +35°C/95°F)

4. Acceptable temperature range: -10°C/14°F to +60°C/140°F

5. Indication functions:

• Time: Hours, minutes, seconds (the hour hand moves every 2 minutes)

• Date

6. Additional functions:

• Radio signal reception function (regular automatic reception, on demand reception, automatic reception recovery)

• Reception standby indication function (RX)

• Reception level indication function (H, M, L)

• Reception status confirmation function (H, M, L or NO)

• Time difference correction function

Citizen H486 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual