Citizen Eco-Drive ES4 Series Instruction Manual
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Citizen Eco-Drive ES4 Series Instruction Manual

Citizen Eco-Drive ES4 Series Instruction Manual

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  • Page 4 * Notice All repairs performed on this watch are to be performed at the CITIZEN. When desiring to have your watch repaired or inspected, please contact the Citizen Service Center.
  • Page 5 <This radio controlled watch receives standard radio signals broadcast from Germany> This is a radio controlled watch; it has the Automatic reception function and On demand reception function. Every day at 3 a.m. or 4 a.m., the watch automatically receives a radio signal and adjusts the time (Automatic reception), or the signal can be received and the time adjusted at any desired time (On demand reception).
  • Page 6 [Part Names] Button (B) Minute hand Hour hand Crown Second hand Summer time setting Button (A) Reception status: OK Receiving: RX Reception status: NO Reception status * The illustrations shown in this manual may differ from the actual watch you have purchased.
  • Page 7 • Depending on the particular watch model, some indicate the reception status and daylight saving setting with the long side of the second hand, while others indicate with the short side of the second hand. Reception status Summer time setting Long side of the hand Long side of the hand Short side of the hand...

  • Page 8: Table Of Contents

    Table of Contents 1. Your Watch ....................8 2. Operating the Crown .................. 9 3. Before Use ....................10 • Checking the Reference Position ............12 4. Functions List .................... 14 Radio Signal Reception 5. For Best Reception ..................16 6.
  • Page 9 Setting the Time Manually 9. Setting the Time ..................26 10. Correcting the Time Difference ..............28 11. Correcting the Reference Position ............30 Eco-Drive 12. Solar Power Function ................32 13. Characteristics of the Eco-Drive Watch ............. 34 • Power Saving Function ................36 •...

  • Page 10: Your Watch

    1. Your Watch ◎ Automatic reception function: Every morning at 3 a.m. and 4 a.m. the watch will automatically receive a signal and adjust the time. However, if reception is successful at 3 a.m., automatic reception will not be performed at 4 a.m. ◎...

  • Page 11: Operating The Crown

    2. Operating the Crown There are two models available for the crown: normal and screw lock. <Operating the Screw Lock Crown> • Turn the crown to • When the screw lock is the left. released, the crown pops out a little and stops in the normal position.

  • Page 12: Before Use

    3. Before Use Check the movement of the second hand The second hand is moving at 1-second intervals. The second hand is moving at 2-second intervals. Button (A) OK: Reception Charge the watch sufficiently successful NO: Signal reception by placing it in direct sunlight failed as indicated in “Guide to RX: Receiving...
  • Page 13 Your watch is correctly receiving The second the standard time hand indicates a reception radio wave. status of OK It is ready to use. Check the reception status by pressing lower right button (A). The second Refer to “On Demand hand indicates Reception”...

  • Page 14: Checking The Reference Position

    [Checking the Reference Position] Before using the watch, check that the hands are aligned with “0”, similar to when setting weighing scales ◎ The reference position may become misaligned when the watch is exposed to strong magnetism, static electricity or impacts. Even if radio waves are received, the correct time will not be indicated unless the watch hands are aligned to the correct reference position.
  • Page 15 ◎ Check that the reference position aligns Correct reference position correctly in the 12:00:00 position. 12:00:00 1. With the crown in the normal position, press the upper right button (B) continuously for about 5 seconds. 2. Release the upper right button (B) when the Button (B) second hand begins to move.

  • Page 16: Functions List

    4. Functions List Function Button or crown operation On demand reception Press lower right button (A) for more than (p. 18) 2 seconds and release when the second hand stops in the RX position. Confirm reception status Press lower right button (A) once. (p.
  • Page 17 Hand movement • The second hand will stop at RX and reception will begin. • The second hand will stop at OK 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.) •...

  • Page 18: Radio Signal Reception

    Radio Signal Reception 5. For Best Reception There are three kinds of reception: automatic reception, on demand reception, and recovery automatic reception. When the radio signal has been properly received, your watch will automatically adjust the time. When reception is complete, each of the hands will move either clockwise or counterclockwise to the received time.

  • Page 19: Poor Reception Areas

    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. ● Extremely hot or cold locations ● Near high-tension electrical ● Inside vehicles, including lines, railway overhead wires cars, trains and aero or communication facilities planes...

  • Page 20: Receiving The Radio Signals

    7. Receiving the Radio Signals Automatic Reception ◎ Place the watch in a stable location near a window where the radio signal can be easily received with the 9:00 position pointing towards the transmitter. The watch will receive the radio signals at 3 a.m. every day. If a signal cannot be received at 3 a.m., it will try again automatically at 4 a.m.

  • Page 21: Recovery Automatic Reception

    2. Press the lower right button (A) for more than 2 seconds and release it when the second hand stops at the RX position. 3. When reception is complete, the second hand will leave the RX position and return to normal movement. Referring to “Confirming the Reception Status”...

  • Page 22: Confirming The Reception Status

    Confirming the Reception Status ◎ The reception status (reception successful or failure) can be confirmed. 1. Press the lower right button (A). The second hand will stop at the OK or NO position indicating the last reception status. [NOTE] Do not press the lower right button (A) for more than 2 seconds. If you do this, the second hand will move to the RX position and on demand reception will begin.
  • Page 23 ● NO indication Unable to receive a signal. Retry reception, either on demand reception or automatic reception. 2. Press the lower right button (A). The hands will return to their normal movement. If the watch is left, the hands will return to their normal movement after 10 seconds. <Even if the radio wave is received correctly, there could be a slight deviance from the correct time due to factors such as the radio wave reception environment and internal watch processing.>...

  • Page 24: Reception Area Guidelines

    Reception Area Guidelines This watch can receive the standard time signal broadcast from Germany. The map shows the approximate reception area. Suitable reception areas may vary according to changes in conditions for the signal due to factors including time, season and weather.
  • Page 25 DCF77 (Germany) Mainflingen: 900 km radius from the transmitter...

  • Page 26: Setting The Summer Time

    8. Setting the Summer Time If the watch is receiving the standard time signal broadcast from Germany, there is no need to set summer time. Use this setting if it is not possible to receive the standard time signal, or if in a region where the summer time is used and standard time signal cannot be received.
  • Page 27 2. Turn the crown to the right to select “0” (summer time off), or to the left to select “+1” (summer time on). 3. Press button (A) or (B) to complete the operation. If the watch is left, the hands will return to their normal movement after 10 seconds.

  • Page 28: Setting The Time Manually

    Setting the Time Manually 9. Setting the Time 1. Pull out the crown. The second hand will align with the 0 seconds position. Crown [NOTE] If the second hand does not align with the 0 seconds position, it is possible that the reference position is incorrect.
  • Page 29 2. Turn the crown to set the time. With every click, each of the hands moves sequentially one minute at a time. (Turn to the right to move forward; turn to the left to move back.) Turn the crown quickly (more than 2 clicks) to move the hands continuously. To stop the continuous movement, turn the crown one click to the left or right.

  • Page 30: Correcting The Time Difference

    10. Correcting the Time Difference When traveling to a different time zone, the time difference can be set (in 1-hour units, ±27 hours) to match the local time using the second hand. –5 ±0 1. Press the upper right button (B) once. The second hand will stop at the 12:00 position.
  • Page 31 3. After setting the time difference, press the upper right button (B) once. The time difference will be indicated and then the hands will return to their normal movement. (If the watch is left for 60 seconds, the hands will return to their normal movement.)

  • Page 32: Correcting The Reference Position

    11. Correcting the Reference Position If the reference position does not indicate “12:00:00”, the reference position must be corrected. 1. Press the upper right button (B) for more than 5 seconds, and release when the second hand begins rotating rapidly. While the hand is still Button (B) moving, pull out the crown and wait until the hand stops moving.
  • Page 33 2. Align the hands with the “12:00:00” reference position. Turn the crown one click to the right to advance the hand by one second, and one click to the left to retard it by one second. Turn the crown quickly (more than 2 clicks) to move the hands continuously. To stop the continuous movement, turn the crown one click to the left or right.

  • Page 34: Eco-Drive

    Eco-Drive 12. Solar Power Function This watch uses a rechargeable cell to store electrical energy. When the watch is fully charged, it will maintain its accuracy for about 6 months. <Ensuring best operation of the watch> Always store the watch in a bright location for best results. ●...
  • Page 35 ● 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 be left in direct sunlight once a month to charge it. [NOTE] Do not charge on surfaces that can easily become hot, such as a car dashboard.

  • Page 36: Characteristics Of The Eco-Drive Watch

    13. Characteristics of the Eco-Drive Watch ◎ When the watch is insufficiently charged, the indication will be changed as follows: [Insufficient charge warning] [Normal indication] The watch has been The insufficient insufficiently charged charge warning (a because the watch face, 2-second interval which contains the solar movement) continues...
  • Page 37 * 1. When the watch stopped due to insufficient charging • It takes at least 30 minutes to recharge sufficiently to perform recovery automatic reception, even if the watch is being exposed to light. After recovery, refer to “Guide to Charging Time” (p. 40) and sufficiently charge the watch. * 2.

  • Page 38: Power Saving Function

    Power Saving Function When the watch is stored in a dark location, the solar cell is not exposed to light and power is not generated continuously for 1 week or more, the power saving function is activated and some features of the watch will be deactivated. The power saving function will be automatically canceled when the watch face is exposed to light.
  • Page 39 <Canceling the power saving function> The power saving function will be automatically canceled when the watch face is exposed to light. • If the watch is insufficiently charged, the second hand will begin the 2-second interval movement. Charge the watch adequately to restore normal movement of the hands. [NOTE] •...

  • Page 40: Insufficient Charge Warning Function

    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 an insufficient charging about 2 days after starting the 2-second interval movement.

  • Page 41: Overcharging Prevention Function

    Overcharging Prevention Function Whenever the rechargeable cell becomes fully charged by exposing the solar cell to light, the overcharging prevention function is automatically activated to prevent the watch from being charged further. No matter how much the watch is charged, it will not affect the rechargeable cell, timekeeping, functions or performance of the watch.

  • Page 42: Guide To Charging Time

    Guide to Charging Time Below are the approximate times required for charging when exposing the watch dial to light continuously. This table is for general reference only and does not represent exact charging times. Charging time (approx.) Illuminance To start working To become fully Environment To work for...
  • Page 43 To work for one day... The charging time to run the watch for one day with normal movement. To become fully charged when the cell is discharged... The time for full charging after the watch has stopped due to an insufficient charging.

  • Page 44: Handling Your Eco-Drive Watch

    Handling Your Eco-Drive Watch CAUTION Charging precautions • Overheating while charging can cause the watch exterior to become discolored, the watch to deform or the movement to be damaged. • Do not charge the watch in a high-temperature environment (about 60°C/140°F or more).
  • Page 45 WARNING Handling the rechargeable cell • Do not remove the rechargeable cell from the watch yourself, unless unavoidable. If you must remove the rechargeable cell, store it out of reach of children to avoid accidental ingestion. • If the rechargeable cell is ingested, consult a doctor immediately. WARNING Changing the rechargeable cell •...

  • Page 46: Troubleshooting

    Troubleshooting <Radio signal reception function> If you believe your watch may be inoperative, consult the following chart: Problem Check Remedy • Does the second hand align • Press and hold the lower right with the RX (receiving) button (A) until the second The watch does not position? hand has reached the RX...
  • Page 47 Problem Check Remedy • Check the time difference • Set the correct time difference Reception is successful, setting. (p. 28) setting. but the time is out by a factor of hours. • Are there objects nearby • Avoiding objects that shield the that could block radio radio waves and sources of signals or generate noise?
  • Page 48 “Guide to Charging Time”. (p. 40) intervals. • The watch has • If the watch does not work stopped. even after charging, contact the Citizen Service Center. • The watch does not work even after charging.
  • Page 49 Problem Check Remedy • The hands moved • This is because the power forward quickly at the saving mode was canceled moment that the watch when the watch was exposed was removed from a to light, and the hands moved desk or drawer.

  • Page 50: Precautions

    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. Indication Minor exposure to water Specifications Case...
  • Page 51 For correct use within the design limits of the watch, confirm the level of water- resistance of your watch, as indicated on the dial and case, and consult the table. Examples of use Moderate exposure to Operation of the Marine sports Scuba diving water (washing, kitchen crown or button...
  • Page 52 • 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.
  • Page 53 • 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. •...
  • Page 54 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.
  • Page 55 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.

  • Page 56: Specifications

    14. Specifications 1. Cal. No.: H36* 2. Type: Analog solar powered watch 3. Time accuracy: Without reception (when watch is not receiving a radio signal) Average monthly deviation: ±15 seconds (when used in of room temperature +5°C to +35°C/41°F to 95°F) 4.
  • Page 57 • Solar power function • Insufficient charge warning function (2-second interval movement) • Overcharging prevention function 7. Operation time: • Time from a full charge until the watch stops without charging: About 6 months About 2.5 years (when in the power saving mode) Operating time may vary depending on the various factors such as how many times radio reception has been performed.
  • Page 58 European Union directives conformance statement Hereby, CITIZEN WATCH CO.,LTD. declares that this product is in compliance with the essential requirements and other relevant provisions of directive 2014/53/EU and all other relevant EU directives. You can find your product’s Declaration of Conformity at...
  • Page 59 Model No.ES4＊ Cal.H36＊ CTZ-B8123 ⑤...

This manual is also suitable for:

H36 series

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