Citizen H990 Eco-Drive Satellite Wave Instruction Manual
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Citizen H990 Eco-Drive Satellite Wave Instruction Manual

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  • Page 3 Thank you for your purchase of this Citizen watch. Before using the watch, read this instruction manual carefully to ensure correct use. After reading, be sure to store this manual in a safe place should it be needed for future reference.

  • Page 4: Safety Precautions

    Safety precautions This manual may contain certain safety advisories. Your watch should be used in accordance with these advisories at all times to ensure optimal enjoyment of your watch and to prevent injury to yourself, other persons and/or damage to property. ■...

  • Page 5: Notes Before Use

    <Notes before use> Case Be careful not to knock or inflict strong shocks on the watch as part of the case is ceramic. Protective stickers Prior to the watch being shipped from the manufacturing plant, its glass, case, metal band, and metal parts of the clasp are covered with stickers to protect them from getting fingerprints or scratches during transit from the plant to the store.

  • Page 6: Before Using The Watch

    Before using the watch The following must be done before using the watch: Checking the power reserve Page ● Check the charge level of the watch. Setting the World Time Page ● Select the city or time difference for which you want to indicate the time and date.
  • Page 7 This watch has a rechargeable cell which is charged by exposing the dial to light. Expose the dial to direct sunlight regularly to charge the watch. For details of charging, see pages 10 to 13.

  • Page 8: Table Of Contents

    Table of contents Before using the watch ....4 Receiving the satellite time signal ........28 Component identification..8 Checking and adjusting Recharging your watch .... 10 the leap second ....35 Checking the power reserve ..14 Checking and adjusting the Using the world time function ...
  • Page 9 Troubleshooting ...... 50 Information ......71 Resetting the watch Specifications......72 —All Reset ......55 Eco-Drive (solar powered) Watch Handling Precautions ... 58 Water resistance ..... 62 Precautions and usage limitations ......65 Maintenance ......70...

  • Page 10: Component Identification

    Component identification Reception-in-progress City indication indication (RX) Upper right Hour hand button ( Minute hand Function indication • Day of the week Crown • Summer time indication (ON/OFF) 24-hour indication Second hand Lower right button ( Reception result Date indication indication (OK/NO)
  • Page 11 Component identification Part of the case is ceramic. Handle with care. Ceramic The illustrations in this instruction manual may differ from the actual appearance of your watch.

  • Page 12: Recharging Your Watch

    Recharging your watch This watch can store electrical energy generated from direct sunlight or light from a fluorescent lamp shining on the dial in the built-in rechargeable cell. After taking off the watch, put it in a location where the dial is exposed to bright light, such as by a window.
  • Page 13 Recharging your watch When the watch reaches a low charge state—insufficient charge warning function When the power reserve becomes low, the second hand moves once every two seconds—This is the insufficient charge warning function. Charge the watch by exposing the dial to light. •...
  • Page 14 Recharging your watch Charging time by environment Below are the approximate times required for charging when exposing the watch dial to light continuously. Please use this table as a reference only. Charging time for Charging time for the second hand the rechargeable Charging time for the to start moving...
  • Page 15 Recharging your watch • To charge the rechargeable cell, it is recommended to expose the dial to direct sunlight. A fluorescent lamp or interior lighting does not have sufficient illumination to charge the rechargeable cell. • When fully charged, the overcharging prevention function works automatically. The accuracy or parts of the watch will not be affected by extra charging.

  • Page 16: Checking The Power Reserve

    Checking the power reserve Check the charge level of the watch and be sure to maintain a sufficient amount of charge. 1. Ensure that the crown is in position 2. Press the lower right button briefly. The second hand moves to indicate the power reserve. The second hand rotates The watch is clockwise, then indicates “OK”...
  • Page 17 Checking the power reserve • “OK” and “NO” indicate the satellite time signal reception result. They have no relation to the charge level. 3. Press the lower right button briefly to finish the procedure. The current time is indicated. • The current time will be indicated automatically after 10 seconds even without pressing the button.

  • Page 18: Using The World Time Function

    Using the world time function Confirming the world time Check the current world time (city) setting. 1. Ensure that the crown is in position 2. Press the upper right button briefly. The second hand indicates the city currently selected. When "New York" (49 seconds position) is selected 3.
  • Page 19 Using the world time function Setting the World Time Select the city for which you want to indicate the time and date. 1. Pull the crown out to position 2. Rotate the crown to select the city for which you want to indicate the time and date.
  • Page 20 Using the world time function Table of selectable cities • The indications in the table below are written differently on some models. • When you use the watch in a place which is not shown in the table below, select the city in the same time zone as the city you want to indicate.
  • Page 21 Using the world time function City indication Second hand position Typical city Time difference Bangkok Beijing Tokyo Adelaide +9.5 Sydney Noumea Auckland Midway Island –11 Honolulu –10 Continued on the next page...
  • Page 22 Using the world time function City indication Second hand position Typical city Time difference Anchorage –9 Los Angeles –8 Denver –7 Chicago –6 New York –5 Santiago –4 Rio de Janeiro –3 Fernando de –2 Noronha Azores –1 (Ponta Delgada)

  • Page 23: Standard Time

    Switching Summer Time and standard time Summer Time is a system adopted in some countries/areas to gain an extra hour of daylight during summer by advancing clocks by one hour. This watch can display summer time or standard time according to the city selected for world time.
  • Page 24 Switching Summer Time and standard time Checking the type of time shown Check whether the watch shows Summer Time or standard time. 1. Ensure that the crown is in position 2. Press the upper right button briefly. The function indication will indicate the type of time currently shown.
  • Page 25 Switching Summer Time and standard time Changing the type of time shown 1. Pull the crown out to position 2. Press the lower right button to change the type of time shown. To show Summer Time: Select “ON. ” The hour hand moves forward by 1 hour. To show the standard time: Select “OFF.

  • Page 26: Before Receiving The Satellite Time

    Before receiving the satellite time signal This watch receives the clock time information sent by satellite. This watch only receives time information. Location information cannot be acquired. Receiving the satellite time signal The satellite time signal can be received using the following three methods. You can also check whether the last attempt to receive the time signal was successful or not.
  • Page 27 Before receiving the satellite time signal • These reception methods can only be performed when the crown is in position When all reset has been performed or you have manually adjusted the calendar, reception may take up to 80 seconds. Cautions regarding receiving the satellite time signal Do not perform satellite time signal reception while operating a vehicle as doing so is extremely dangerous.
  • Page 28 Before receiving the satellite time signal When receiving the satellite time signal As shown in the picture below, make sure you are in an area with few surrounding trees, buildings, or other objects with may obstruct the satellite time signal. Face the dial towards the sky and perform time signal reception.
  • Page 29 Before receiving the satellite time signal • If the time signal is difficult to receive… • Remove the watch from your wrist and attempt reception again. • Adjust the orientation of or lean the watch while keeping the dial facing towards the sky.

  • Page 30: Receiving The Satellite Time

    Receiving the satellite time signal Manual reception 1 Use this method for normal reception. 1. Ensure that the crown is in position 2. Press and hold the lower right button for two or more seconds. After indicating the previous reception result, the tail of the second hand moves to “RX”...
  • Page 31 Receiving the satellite time signal calendar, reception may take up to 80 seconds.) The second hand will move normally once reception is finished and the reception result has been displayed for 2 seconds. Successful signal reception Failed signal reception Reception result (OK) Reception result (NO) The time will be Normal operation...
  • Page 32 Receiving the satellite time signal Manual reception 2 Use this method when the leap second has been updated or when all reset has been performed. 1. Ensure that the crown is in position 2. Press and hold the lower right button for 7 or more seconds.
  • Page 33 Receiving the satellite time signal The second hand will move normally once reception is finish and the reception result has been displayed for 2 seconds. Successful signal reception Failed signal reception Reception result (OK) Reception result (NO) The time will be Normal operation updated and the resumes with the...
  • Page 34 Receiving the satellite time signal Checking the satellite time signal reception You can check the previous result of satellite time signal reception (Manual 1/ Manual 2/Circumstantial reception). 1. Ensure that the crown is in position 2. Press the lower right button briefly.
  • Page 35 Receiving the satellite time signal 3. Press the lower right button briefly to finish the procedure. The current time is indicated. • The current time will be indicated automatically after 10 seconds even without pressing the button. If the second hand rotates counterclockwise before indicating the reception result, the charge of the watch is low.
  • Page 36 Receiving the satellite time signal About circumstantial reception If the satellite time signal has not been received for an extended period of time, this watch is equipped with a function which enables it to automatically receive the time signal (circumstantial reception). When the following four conditions are met, the watch will start automatic reception.

  • Page 37: The Leap Second

    Checking and adjusting the leap second This watch displays the time information by setting the leap second and time difference (manual adjustment) to the International Atomic Time information received from the satellite. • The factory default leap second setting is “–34 seconds” (As of 1/6/2011). •...
  • Page 38 Checking and adjusting the leap second 1. Pull the crown out to position 2. Press the upper right button briefly. Using the “0:00:00” position as the starting point, the minute hand and second hand will indicate the leap second setting after a few seconds. When 0 minutes and 34 When 1 minute and 5 seconds is indicated: The...
  • Page 39 Checking and adjusting the leap second 3. Rotate the crown to adjust the leap second. • The leap second can be adjusted in the range of 0 to –90 seconds. 4. Push the crown in to position to finish the procedure. The factory default leap second setting is “–34 seconds”...

  • Page 40: Checking And Adjusting The Rollover Number

    Checking and adjusting the rollover number In order for this watch to correctly process the week information* received from the satellite, a rollover number for each time period is set. The rollover numbers will be updated automatically. If the rollover number setting is incorrect, the time and date may not be displayed accurately.

  • Page 41: Rollover Number

    Checking and adjusting the rollover number Time period (Coordinated Universal Time, GMT) Rollover number 22/8/1999 (Sun) 00:00 – 6/4/2019 (Sat) 23:59 7/4/2019 (Sun) 00:00 – 20/11/2038 (Sat) 23:59 21/11/2038 (Sun) 00:00 – 6/7/2058 (Sat) 23:59 7/7/2058 (Sun) 00:00 – 19/2/2078 (Sat) 23:59 20/2/2078 (Sun) 00:00 –...
  • Page 42 Checking and adjusting the rollover number 1. Pull the crown out to position 2. Press the upper right button briefly. The minute hand and second hand will indicate the current leap second setting. 3. Press and hold the upper right button five or more seconds.
  • Page 43 Checking and adjusting the rollover number 4. Rotate the crown to adjust the rollover number. • The rollover number can be adjusted in the range of 0 – 5. See the table on page 39 for appropriate rollover number. 5. Push the crown in to position to finish the procedure.

  • Page 44: Adjusting The Time/Calendar Manually

    Adjusting the time/calendar manually 1. Pull the crown out to position 2. Press the lower right button briefly. The second hand moves to the 0 second position. 3. Rotate the crown to adjust the minute. • If you spin the crown quickly a few times, the hands will move continuously.
  • Page 45 Adjusting the time/calendar manually 6. Press the lower right button briefly. 7. Rotate the crown to adjust the date. • The date indication and function indication (day of the week) move together. • If you spin the crown quickly a few times, the date indication and the function indication will move continuously.

  • Page 46: Month And Year Indications

    Adjusting the time/calendar manually Month and year indications The month and year are indicated by the second hand when you adjust the time and calendar manually. The date is corrected automatically at the end of each month if the number of years passed since the last leap year and month are set correctly.
  • Page 47 Adjusting the time/calendar manually The figure shows September in the 2nd The figure shows February in the 3rd year since the last leap year. year since the last leap year. Quick reference chart for the number of years passed since the last leap year Indication of the second hand Passed year Year...

  • Page 48: Checking And Correcting The Current Reference Position

    Checking and correcting the current reference position If the time or date is not shown correctly even after proper reception of the time signal, check whether the reference position is correct or not. What is the reference position? Correct reference position The base position for all indications to indicate the time and date.
  • Page 49 Checking and correcting the current reference position 1. Ensure that the crown is in position 2. Press and hold the upper right button seven or more seconds. After indicating the World Time setting and the type of time shown (summer time/standard time), all indications move to the current reference position.
  • Page 50 Checking and correcting the current reference position 3. Pull the crown out to position The function indication and date indication move slightly. 4. Rotate the crown to adjust the date and day of the week to the correct reference position. •...
  • Page 51 Checking and correcting the current reference position either direction. 7. Press the lower right button briefly. The minute hand and second hand move slightly. 8. Rotate the crown to adjust the minute hand and second hand to the correct reference position. •...

  • Page 52: Troubleshooting

    Troubleshooting If you have a problem with your watch, check the table below. Symptoms Remedies Page Problems with time signal reception. − Push the crown in to position Avoiding places where the satellite signal may be obstructed and objects which emit noise, face the dial towards the sky and start reception.
  • Page 53 If the remedies above do not solve the problems, (continued) − consult your nearest Authorized Citizen Service Center. Check the World Time setting. If the time is not indicated correctly after performing manual reception 1, perform manual reception 2.
  • Page 54 Push the crown in to position Charge the watch by exposing it to direct sunlight until the second hand moves normally. All hands stop moving. If the remedies above do not solve the problems, − consult your nearest Authorized Citizen Service Center. 52 52...
  • Page 55 Troubleshooting Symptoms Remedies Page The time and/or date is incorrect. Check the World Time setting. Check and correct the current reference position. The time and/or date Receive the satellite time signal manually to adjust the is incorrect. time and date. Set the time and date manually.
  • Page 56 Send the watch to your nearest Authorized Citizen Service Center. Charge the watch for 2 to 3 days under direct sunlight. If the second hand starts moving once every two The watch stops seconds the watch is being charged correctly.

  • Page 57: All Reset

    Troubleshooting Resetting the watch—All Reset The watch may not work properly if it is affected by strong shock or static electricity; the hands do not stop or the watch does not work though the watch is charged. In this case, perform All Reset. Caution •...
  • Page 58 Troubleshooting 1. Pull the crown out to position 2. Press the right buttons at the same time for three or more seconds, then release. The second hand moves to the “0” second position, the hour hand and date indication move slightly, and the watch is reset.
  • Page 59 Troubleshooting After performing All Reset You must set the watch again following the procedure below. 1. Correct the current reference position. After performing All Reset, the watch is in reference position correction mode. See from step 4 on page 48. 2.

  • Page 60: Eco-Drive (Solar Powered) Watch Handling Precautions

    Eco-Drive (solar powered) Watch Handling Precautions <Always Make Sure to Recharge Frequently> • Please note that if you wear long sleeves, the watch may stop as a result of being covered by your sleeve and blocked from the light. • When you take off the watch, try to place it in as bright a location as possible.
  • Page 61 Eco-Drive (solar powered) Watch Handling Precautions CAUTION Recharging Precautions • Do not charge your watch at high temperatures (60°C/140°F) as this may cause damage to sensitive components and the watch to malfunction. Examples: • Charging the watch too close to a light source which generates a large amount of heat such as an incandescent lamp or halogen lamp.
  • Page 62 Eco-Drive (solar powered) Watch Handling Precautions <Replacement of Rechargeable Cell> • Your watch features a cell that does not need regular replacement. However, after an extended period of time, power consumption may increase due to deterioration of lubrication in the movement. This may result in shorter than expected run time.
  • Page 63 Eco-Drive (solar powered) Watch Handling Precautions WARNING Use Only the Specified Rechargeable Cell • Never install a conventional battery in your watch. Only use the specified rechargeable cell. Your watch is designed to operate only with the original type of rechargeable cell. It is not designed to run or be used with a conventional type of battery.

  • Page 64: Water Resistance

    Water resistance WARNING Water Resistance • Refer to the watch dial and the case back for the indication of the water resistance of your watch. The following chart provides examples of use for reference to ensure that your watch is used properly.
  • Page 65 Water resistance Water-related use Minor exposure Swimming and Operate the crown to water (washing general washing Skin diving, Scuba diving or button when face, rain, etc.) work marine sports using an air tank the watch is wet...
  • Page 66 Water resistance • Non-water resistant watches cannot be used underwater or in environments in contact with water. • Water-resistance for daily use (to 3 atmospheres) means that the watch may be worn while washing your face or in the rain, but is not to be immersed in water. •...

  • Page 67: Precautions And Usage

    Precautions and usage limitations CAUTION To Avoid Injury • Be particularly careful when wearing your watch while holding a small child, to avoid injury. • Be particularly careful when engaged in strenuous exercise or work, to avoid injury to yourself and others.
  • Page 68 Consult the shop where you purchased the watch or your nearest Authorized Citizen Service center. If you purchase a product which is sold with a special tool for band adjustment, you may carefully adjust the band yourself.

  • Page 69: Static Electricity

    Precautions and usage limitations • A rubber type strap may become stained by dyes or soils found in clothing and other accessories. Since these stains may become permanent, take caution when wearing your watch with items that may transfer color (articles of clothing, purses, dyed bracelets, etc.). •...
  • Page 70 Precautions and usage limitations <Strong Shock> • Avoid dropping the watch or subjecting it to other strong impact. It may cause malfunctions and/or performance deterioration as well as damage to the case and bracelet. <Chemicals, Corrosive Gasses and Mercury> • If paint thinner, benzene or other solvents or products containing these solvents (including gasoline, nail-polish remover, cresol, bathroom cleaners and adhesives, water repellent, etc.) are allowed to come in contact with the watch, they may cause discoloration, deterioration and damage materials of the watch.
  • Page 71 Precautions and usage limitations • The case and band of the watch come in to direct contact with the skin. This may result in unnoticed accumulations of dirt and foreign matter caused by normal wear. Accumulated matter may cause rust, discoloration, and premature wear. Be sure to regularly clean your watch with a soft cloth.

  • Page 72: Maintenance

    Your watch needs an inspection once every two or three years for safety and longer usage. To keep your watch water-resistant, the gaskets and other components need to be replaced regularly. Other parts need to be inspected and replaced if necessary. Always ask for genuine Citizen parts upon replacement.

  • Page 73: Information

    Information About the satellite time signal The satellite wave watch has no adverse effects on the human body or medical equipment. About the Watch with Luminous Paint Your watch may feature luminous treatment to the dial and hands to aid you in reading the watch in dimly lit environments.

  • Page 74: Specifications

    Specifications H990 Analog solar-powered watch Model Type Within ±15 seconds per month when worn at normal operation Timekeeping accuracy temperatures (between +5˚C and +35˚C) (without the time signal reception) –10˚C to +60˚C Operating temperature range 0˚C to +40˚C Charging temperature range •...
  • Page 75 Specifications • Solar power function Additional • Power reserve indication (The charge level is not displayed) functions • Charge suspension temperature detection function • Overcharging prevention function • Over discharge detection function • Insufficient charge warning function (two-second interval movement) •...

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