English Table of Contents 1. Your Watch ................................................................................................. 9 2. Before Use ................................................................................................ 12 • Checking the Reference Position ......................................................... 14 3. Basic Watch Operations .......................................................................... 16 Radio Signal Reception 4. Radio Signal Reception .........
Operations in Each Mode 11. Changing Mode ........................................................................................ 42 12. Using Home Time and World Time ......................................................... 44 13. Using Daylight Saving Time .................................................................... 46 14. Setting the Time (TME) ............................................................................ 48 15. Setting the Calendar (CAL)..........................................
Please use this watch after it has been sufficiently charged by exposure to light. Congratulations and Thank You for your selection of a CITIZEN Eco-Drive watch. To get the most out of your purchase, please be sure to read this manual and keep it on hand for reference. Once fully charged by exposure to light, your watch will give you years of enjoyment and reliability. If the second hand of the watch is moving at two-second intervals, this indicates the watch is insufficiently charged.
Part Names (1) Part Names (2): Digital Displays UTC hour hand Charge level indicator/ radio wave reception indicator Home time minute hand [Digital display 2] Home city name [Digital display 1] World city name Button (B) 24-hour hand Home time hour hand Crown Digital display 2 (Displays the home city) Insufficient charge warning mark Chronograph measurement mark Timer measurement mark Alarm setting mark Crown for turning the outside scale Home time second hand UTC minute hand Button (A) Mode
Part Names (3): Radio Wave Reception Display NO: Signal reception failed RX: Reception standby H, M, L: Reception level/ reception status W 1. Your Watch World Time Eco-Drive Radio Controlled Watch This watch is a radio controlled watch, which receives the standard time radio waves that are broadcast from radio wave transmitters in four regions, Japan, the USA, Europe (Germany) and China, and uses these waves to automatically correct the time and date. (p.
Important Points Regarding Radio Wave Reception i UTC (Coordinated Universal Time), the time and date of 43 cities (or regions) from around the world and one city (any can be set) can be displayed and easily called up. It is convenient when traveling overseas on business or vacation. Daylight saving time can also be set. (p. 46) There are two methods to receive radio signals during normal operation, Automatic and On Demand.
W 2. Before Use NO: Signal reception failed RX: Reception standby Reception level/ reception status H : High M : Middle L : Low Crown 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 or is stopped. Button (A) Mode hand [Insufficient charging] Charge level indicator 12 [Fully charged] Charge the watch sufficiently by placing it in direct sunlight as indicated in “Guide to Charging Time” (p. 100).
[Checking the Reference Position] Before using the watch, confirm that the hands are aligned with “0”, similar to when setting weighing scales i 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. Check that the hands are properly aligned with “0”.
W 3. Basic Watch Operations * The watch receives the radio wave from the radio wave transmitter located in the home city’s region. Home time hour hand Home time minute hand 1. Check the charge level. (p. 40) Button (B) Crown Digital display 1 Button (A) Home city (Digital display 2) 16 Home time second hand 2. Set the home city. 3. Set the home time. 4. Set digital display 1.
W 4. Radio Signal Reception Three types of radio signal reception are possible: automatic reception, on demand reception and recovery automatic reception. There are three modes where reception is possible: time (TME), calendar (CAL) and receive set (RX-S). The watch cannot receive signals in any other mode. Display the home city in digital display 2 when receiving the radio wave. • Reception is not possible unless the crown is in the normal position. • If the home city is “UTC”, reception is not possible.
On Demand Reception (Manual Reception) • Signals can be received at any time. [Mode hand position when receiving] 1. Pull the crown out to position 1 and turn to align the mode hand with the CAL, TME or RX-S position. 2. Return the crown to the normal position. 3. Remove the watch from your wrist and place on a stable surface near a window where the radio signal can be easily received. 4.
If the watch has received insufficient light for charging or has been kept in a dark location for an extended period of time (one week or more), the Power Save Feature of the watch is activated and the hands of the watch stop. Even though the watch will not show movement, the correct time is kept in memory. When the watch is in the Power Save mode, it will continue to keep the correct time internally.
W 7. Confirming Reception Status • The result of the radio wave reception can be confirmed. • The daylight saving time setting status of the home city can be confirmed. 1. Pull the crown out to position 1 and set the mode to TME, CAL or RX-S. 2. Press the crown back into its normal position and press the lower right button (A) once to confirm the reception status. The second hand will move to H, M, L or NO.
W 8. Reception Area Guidelines This watch can receive standard time radio waves broadcast from Japan (two transmitters), the USA, Europe (Germany) and China. The standard time radio wave to be received can be changed by selecting the city in another region. The maps show the approximate reception areas. However, note that the radio wave condition could change due to factors including the weather (such as lightning) and changes in the season or sunrise/sunset time.
JPN: JJY (Japan) Automatically selects one of the two transmitters Fukushima Transmitter: Radius of approximately 1,500 km from the transmitter Kyushu Transmitter: Radius of approximately 2,000 km from the transmitter 30 CHN: BPC (China) Shangqiu, Henan: Radius of approximately 1,500 km from the transmitter 31
USA: WWVB (USA) Fort Collins: Radius of approximately 3,000 km from the transmitter 32 EUR: DCF77 (Germany) Mainflingen: Radius of approximately 1,500 km from the transmitter 33
W 9. World City Display [Cities and the standard time radio wave assignment] UTC (Coordinated Universal Time) and 43 cities (or regions) are registered in this watch in advance, and it is also possible to register one additional city. The time of each city can be called up and displayed. • Press the upper right button (B) while the crown is in position 1 during TME mode or CAL mode to display in sequence from the top left to bottom right the city names shown in “Table of UTC Time Differences” (p.
[Table of UTC Time Differences] Set to TME mode and press the upper right button (B) repeatedly while the crown is in position 1 to display in sequence in digital display 1 the table’s city names from top to bottom, and press the lower right button (A) to display in sequence the city names from bottom to top. • Radio waves are only received from the assigned transmitters. (Example: When TYO is displayed in digital display 2, radio waves other than the Japan radio wave cannot be received.
Display City name Received Time difference radio wave Display City name transmitter KBL Kabul KHI Karachi DEL Delhi DAC Dhaka RGN Yangon BKK + 4.5 EUR TYO Received Time difference radio wave Display City name transmitter Tokyo +9 JPN Received Time difference radio wave Display City name transmitter DEN Denver -7 USA Received Time difference radio wave transmitter FEN Fernando de Noronha -2 EUR Ponta Delgada -1 EUR +5 CHN ADL Adelaide + 9.
W 10. Charge Level Display [Checking the charge level display] Level • The charge level (approximate) is displayed in four grades to show how much the secondary battery is charged. • The charge level indicator points to the middle of each grade. • Use the charge level display as a guideline when wearing your watch. We recommend that you regularly check the charge level and keep it at level 2 or above.
W 11. Changing Mode WT-S World time set * Crown in position 1 This watch has eight modes: time (TME), calendar (CAL), timer (TMR), chronograph (CHR), world time set (WT-S), alarm 1 (AL-1), alarm 2 (AL-2) and receive set (RX-S). 1. Pull the crown out to position 1 (mode switching position). • The home city and (M) are displayed alternately on digital display 2 to show that the mode switching status has been entered. 2.
Example: During time mode (TME) W 12. Using Home Time and World Time Los Angeles • When going to a country or region in a different time zone when on business or vacation, the destination home time can be easily displayed by switching the home time and world time. * Switching can only be performed during the time mode (TME) or calendar mode (CAL). 44 New York Pull the crown out to Button (B) position 1 and press buttons (A) and (B) at the same time.
W 13. Using Daylight Saving Time [Setting the daylight saving time] Change automatically with radio wave reception [What is daylight saving time?] This is a time system where the clocks are put forward an hour during the summer, when the daylight hours are longer. Whether or not the system is used and the length of use differs between countries and regions.
W 14. Setting the Time (TME) (The time is corrected using the digital display) • The time can be set manually in countries or regions where the radio wave cannot be received. • To set the time, call up the city whose time you want to correct in digital display 1. The home time (hour/minute/second hands) cannot be corrected directly. • It is possible to change the daylight saving time setting in TME mode. 1.
6. Press the upper right button (B) to enter the hour correction status. • Turn the crown to correct the time. Turn to the right to move forward and to the left to move back. • Turn the crown continuously to move quickly. 7. Press the upper right button (B) to enter the 12H/24H correction status. • Press the lower right button (A) to switch between the 12-hour clock and 24-hour clock. • This setting is applied even in other modes. 8. Return the crown to the normal position to complete the operation.
W 15. Setting the Calendar (CAL) (The date is corrected using the digital display) • The date can be set manually in countries or regions where the radio wave cannot be received. • In the same way as for “Setting the Time”, to adjust the date of the home city, call up the city whose date you want to correct in digital display 1. 1. Pull the crown out to position 1 and turn to align the mode hand with CAL (calendar mode). 2.
Button (B) Button (A)/(B) Position 1 Position 2 Button (A) Select the city • When the date is set for one of the cities, the dates for all the other cities are also corrected automatically. • The year can be set between 2000 and 2099. • When the year, month and date are set, the day is corrected automatically. • If a date that does not exist is set (for example, February 30), when the watch returns to the normal display, it automatically displays the first day of the next month.
W 16. Using the Timer (TMR) • The timer can be set from 1 minute up to 99 minutes, in 1-minute units. After the end of measurement, the time-up tone sounds for about 5 seconds and the watch returns to the timer initial setting status. (Auto return function) • Press the lower right button (A) during measurement to return to the initial set time and start measurement again. (Flyback function) • Radio waves cannot be received during timer measurement. 1.
1. A confirmation tone will sound each time you press the upper right button (B) to start and stop the measurement. • RUN (run) is displayed in digital display 2 during measurement, and STP (stop) is displayed when the timer is stopped. The measurement mark comes on during measurement. 2. Press the lower right button (A) during measurement to return to the initial set time and start measurement again.(Flyback function) 3.
W 17. Using the Chronograph (CHR) • The chronograph can display times up to 23 hours 59 minutes and 59.99 seconds. • After it exceeds 24 hours, the measurement stops and the chronograph returns automatically to the reset status. • Radio waves cannot be received during chronograph measurement. Button (B) 1. Pull the crown out to position 1 and turn to align the mode hand with CHR (chronograph mode). 2. Return the crown to the normal position. 3.
W 18. Using the World Time Setting (WT-S) • Daylight saving time can be set for each city. (Cannot be set for UTC) • Whether show or hide each city (44 cities other than UTC) can be set. * Using this function, it is easy to call up and display the cities from each mode. (Zone set function) * If a city is set to not display, it cannot be displayed from other modes. • Any time difference in units of 15 minutes can be set for HOM (user setting city).
• Any time difference can be set for HOM (user setting city), in intervals of 15 minutes from the UTC time. • The radio wave received at HOM will be from the transmitter assigned to the city that has the most similar time difference with UTC. 1. Pull the crown out to position 1 and turn to align the mode hand with WT-S (world time set mode). 2. Pull the crown out to position 2 to enter the world time correction status. 3.
W 19. Using the World Time Alarm (AL-1 and 2) • An alarm can be set for the set city time. • Once a day, the alarm will sound for 15 seconds when it reaches the set time. To stop the alarm, press button (A) or (B). • The sound of the alarm is different for alarm 1 and alarm 2, but the setting method is the same. • The correction location changes in the following sequence: Alarm ON/OF c City name c Alarm: Hours c Alarm: Minutes. • City name: Turn the crown to select the city.
W 20. Using the Receive Setting (RX-S) mA (Manual): The time is not updated with the daylight saving time from the received radio wave. [Daylight saving time reception setting] [Automatic reception setting] • Select whether to update the time with the daylight saving time from the received radio wave. Refer to “Using Daylight Saving Time” (p.46) for details on daylight saving time. AU (Auto): The time is updated with the daylight saving time from the received radio wave.
1. Pull the crown out to position 1 and turn to align the mode hand with RX-S (receive set mode). 2. Pull the crown out to position 2 to enter the daylight saving time (SMT) reception setting status. • AU or mA flashes and the watch enters the correction status. • Each time the upper right button (B) is pressed, the display switches between the daylight saving time reception setting and the automatic reception setting. 3. Press the lower right button (A) to select AU or mA.
W 21. LED Lights • Press the upper right button (B) while the crown is in the normal position to turn on the LED lights of digital displays 1 and 2 for three seconds. However, note that the lights do not come on in the following cases. * During timer mode or chronograph mode * During radio wave reception * During 2-second interval movement (insufficient charge warning status) W 22.
4. A Adjusting the charge level indicator (1) Display CHA in digital display 2. (2) Turn the crown to align the charge level indicator of the watch face with the center of CHN. * Turn the crown continuously to move quickly. To stop, turn the crown to the left or right. * If no correction is required, proceed to the next step. W 23. Adjusting the Reference Position UTC hour and minute hands 1. Pull the crown out to position 1 and turn to align the mode hand with CHR.
6. B Adjusting the UTC hands (hour hand and minute hand) (1) Press the upper right button (B) to display UTC in the digital display. (2) Turn the crown to align the UTC hour hand and minute hand with 12:00. • If the hands overlap and are difficult to see, press the lower right button (A) to move the minute hand by -3 minutes to make the UTC hands easier to see. Press the lower right button (A) again to return the minute hand to its Press the upper UTC hour and original position. right button (B).
Using the Slide Rule Bezel The following measurements and calculations are possible depending on the model. Model 1: Measurement of elapsed time, remaining time Model 2: Navigation calculations, general calculations * Depending on the model, some additional features may not be available. Model 1 Align the q mark (K mark for this model) on the slide rule bezel with the minute hand.
You can tell how much time remains by aligning the q mark (or K mark) on the slide rule bezel with the target time. Model 2 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).
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. 82 3.
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. 84 5.
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. 86 7.
B. General calculation functions 1. Multiplication Problem: 20 M 15 Solution: Align 20 on the outside scale with 10 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. 88 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.
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. 90 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.
W 24. Solar Power Function This watch uses a secondary battery to store electrical energy. When the watch is fully charged, it will run for about 6 months. Always store the watch in a bright location for best results. j Wearing clothes with long sleeves makes it difficult for the watch to get the necessary light, resulting in insufficient charging. We recommended that you charge the watch for a long time in direct sunlight once a month.
W 25. Characteristics of the Solar Powered Watch i When the watch is insufficiently charged, the indication will be changed as follows: [Normal display] * 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. 100) and sufficiently charge the watch. * 2.
A. Power Saving Function If the watch face is not exposed to light for a long time, the power saving function is activated to minimize the battery consumption. The power saving function will be automatically canceled when the watch face is exposed to light. • Power saving 1: When power is not generated for more than 30 consecutive minutes, the digital displays go off to save power.
B. Insufficient Charge Warning Function When the charge level indicator reaches level 0, the second hand’s movement changes from 1-second intervals to 2-second intervals and the mark flashes in digital display 1 to show that the watch is insufficiently charged. The watch will stop due to insufficient charging about 3 days after starting the 2-second interval movement if kept in a place with no light.
D. Guide to Charging Time The charging time varies according to the model (including the color of the watch face). The following data should only be used as a guideline. *The charging time is based on continuous exposure.
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.
Troubleshooting Problem Check • Is the home city (digital display 2) set to the same reception area as your current location? Radio signals cannot be received. 104 • Are you moving the watch while receiving a signal and the second hand is showing RX, H, M or L? Remedy Problem • Check the map and change the setting. o33) • Check the map. (p. 28o o45) • Change the setting. (p.
Problem Radio signals cannot be received. The time is not correct. Check Remedy • Is the mode hand pointing to a mode other than TME, CAL or RX-S? • Is chronograph or timer measurement in progress? • Pull the crown out to position 1 and set the mode to TME, CAL or RX-S. • Is the reference position set correctly? Check the reference position. (p. 14) • If the reference position is not correctly set, adjust it as indicated in “Adjusting the Reference Position”. (p. 74) Problem The time is not correct.
Check Remedy • Is the charge level indicator pointing at level 0? • Charge the watch sufficiently until the charge level indicator reaches level 3, as indicated in “Guide to Charging Time”. (p. 41) The second hand is moving in 2second intervals. The watch has stopped. • Is “ERR” displayed in digital display 1? • Reset the watch (p. 72) and then correct the reference position. (p. 74) If “ERR” is displayed again, contact the store where you purchased the watch or a Citizen Service Center.
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. Precautions WARNING: Water-resistance performance There are several types of water-resistant watches, as shown in the following table. Examples of use The unit "bar" is roughly equal to 1 atmosphere. * WATER RESIST(ANT) xx bar may also be indicated as W.R. xx bar.
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.
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.
W 26. Specifications 1. Cal. No.: U68* 2. Type: Combination solar powered watch 3. Time accuracy: Without reception (when watch is not receiving a radio signal) Average monthly deviation: ±15 seconds when used in room temperature (+5°C to +35°C / 41°F to 95°F) 4. Acceptable temperature range: 0°C to + 50°C / 32°F to 122°F 5.
• Time difference set by user • Zone set function (city name display SET/OFF) • Home time (analog) and world time (digital) switching function • LED lights • Power saving function 1 • Power saving function 2 • Reference position checking/adjustment function • Solar power function • Insufficient charge warning function (2-second interval movement) • Overcharging prevention function • JIS Type-1 antimagnetic watch • Impact detection function • Hand correction function 118 7.
