Filter
Top Products
Operation Guide 4709 4713
5
4. Press A to exit the setting screen.
• When you exit the setting screen, the analog hands are adjusted automatically to
match the digital time. See “Analog Timekeeping” for more information.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
The time calibration signals transmitted from Mainflingen (Germany), Anthorn
(England), or Fort Collins (the United States) include both Standard Time and DST
data. When the Auto DST setting is turned on, the watch switches between Standard
Time and DST (summer time) automatically in accordance with the signals.
• The time calibration signals transmitted from Fukushima and Fukuoka/Saga (Japan)
do not include summer time data.
• If you experience problems receiving the time calibration signal in your area, it
probably is best to switch between Standard Time and Daylight Saving Time
(summer time) manually.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A until the Time Zone starts to flash, which
indicates the setting screen.
2. Press B and the DST setting screen appears.
3. Use C to cycle through the DST settings in the sequence shown below.
Auto DST (
) DST off (
) DST on (
)
4. When the setting you want is selected, press A to exit the setting screen.
• The DST indicator appears to indicate that Daylight Saving Time is turned on.
Analog Timekeeping
The analog time of this watch is synchronized with the digital time. The analog time
setting is adjusted automatically whenever you change the digital time.
Note
• The hands for the analog timepiece move to adjust to a new setting whenever any of
the following occurs.
When you change the digital time setting manually
When the digital time setting is changed by time calibration signal reception
When you change the Home Time Zone and/or DST setting
• If the analog time does not match the digital time for any reason, use the procedure
described under “To adjust the analog time” to match the analog setting to the digital
setting.
• Whenever you need to adjust both the digital and the analog time settings manually,
make sure you adjust the digital setting first.
• Depending on how much the hands have to move in order to adjust to the digital
time, it may take some time before they stop moving.
To adjust the analog time
1.In the Timekeeping Mode, press B five times to enter
the Hand Setting Mode.
2.Hold down A until the current digital time starts to
flash, which indicates the setting screen.
3. Use C to adjust the analog setting as described below.
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
When you want to do this:
Move the hand setting
forward 10 seconds
Perform this button operation:
• Press C.
Move the hand setting a short
way forward at high speed
Move the hand setting a
long way forward at high
speed
• Hold down C.
• Release C when the hands reach the setting
you want.
• While holding down C to move the hands at
high-speed, press B to lock the high-speed
hand movement.
• To stop the hand movement, press any
button.
• Hand movement stops automatically if the hour
hand makes one full (12-hour) revolution.
4. Press A to exit the setting screen.
• The minute hand will be adjusted slightly to match the seconds when you exit the
setting screen.
• To return to the Timekeeping Mode, press B.
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Power Saving Function
The Power Saving function enters a sleep state automatically whenever the watch is
left in an area where it is dark for a certain period. The table below shows how watch
functions are affected by the Power Saving function.
Approximate Period
in sleep state
4 to 7 days
8 days or more
Functions
• LCD off
• Alarm, hourly time signal, analog timekeeping and
auto receive enabled
• LCD off, alarm and hourly time signal disabled
• Analog timekeeping stopped at 12 o’clock
• Auto receive disabled
The sleep state is indicated by a blank screen.
• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area.
• Press any button.
Scrolling
C is used in various modes and setting screens to scroll through data. In most cases,
holding down C during a scroll operation scrolls through the data at high speed.
Initial Screens
When you enter the Dual Time or Alarm Mode, the data you were viewing when you
last exited the mode appears first.
Radio-controlled Atomic Timekeeping Precautions
• Strong electrostatic charge can result in the wrong time being set.
• The time calibration signal is bounced off the ionosphere. Because of this, such
factors as changes in the reflectivity of the ionosphere, as well as movement of the
ionosphere to higher altitudes due to seasonal atmospheric changes or the time of
day may change the reception range of the signal and make reception temporarily
impossible.
• Even if the time calibration signal is received properly, certain conditions can cause
the time setting to be off by up to one second.
• The current time setting in accordance with the time calibration signal takes priority
over any time settings you make.
• The watch is designed to update the date and day of the week automatically for the
period January 1, 2000 to December 31, 2099. Setting of the date by a time
calibration signal cannot be performed starting from January 1, 2100.
• This watch can receive signals that differentiate between leap years and non-leap
years.
• Though this watch is designed to receive both time data (hour, minutes, seconds)
and date data (year, month, day), certain signal conditions can limit reception to time
data only.
• Normally, the signal reception date shown by the Last Signal screen is the date data
included in the received time calibration signal. When only time data is received,
however, the Last Signal screen shows the date as kept in the Timekeeping Mode at
the time of signal reception.
• If you are in an area where proper time calibration signal reception is impossible, the
watch keeps time with the precision noted in “Specifications”.
• If you have problems with proper time calibration signal reception or if the time
setting is wrong after signal reception, check your current time zone, DST (summer
time), and auto receive settings.
Timekeeping
• Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to 00
without changing the minutes.
• The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to change
it except after you have the watch’s battery replaced or when battery power drops to
Level 5.
• The times for the Timekeeping Mode and all the time zones of the Dual Time Mode
are calculated in accordance with each time zones UTC differential.
• The UTC differential is a value that indicates the time difference between a
reference point in Greenwich, England and the time zone.
• The letters “UTC” is the abbreviation for “Universal Time Coordinated”, which is the
world-wide scientific standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s
rotation.
12-hour/24-hour Timekeeping Formats
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is also
applied in all other modes.
• With the 12-hour format, the PM indicator (P) appears on the display for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of
midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
Illumination Precautions
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
Specifications
Accuracy at normal temperature: ± 20 seconds a month
Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time system: Switchable between 12-hour and 24-hour formats
Calendar system: Full Auto calendar pre-programmed from the year 2000 to 2099
Other: Home time zone (can be assigned one of 29 time zones); Daylight
Saving Time (summer time)/Standard Time
Analog Timekeeping: Hour, minutes (hand moves every 10 seconds)
Time Calibration Signal Reception: Auto receive up to six times a day (remaining
auto receives cancelled as soon as one is successful); Manual Receive;
Last Signal screen
Receivable Time Calibration Signals: Mainflingen, Germany (Call Sign: DCF77,
Frequency: 77.5 kHz); Anthorn, England (Call Sign: MSF, Frequency: 60.0
kHz); Fort Collins, Colorado, the United States (Call Sign: WWVB,
Frequency: 60.0 kHz); Fukushima, Japan (Call Sign: JJY, Frequency: 40.0
kHz); Fukuoka/Saga, Japan (Call Sign: JJY, Frequency: 60.0 kHz)
Dual Time: 29 time zones
Other: Standard Time/Daylight Saving Time (summer time)
Alarm: 1 daily alarm; Hourly Time Signal
Stopwatch
Measuring unit: 1/100 second
Measuring capacity: 59' 59.99''
Illumination: LED (light-emitting diode)
Other: Battery power indicator; Power Saving
Auto Return Features
• If you leave the watch in the Alarm Mode or Hand Setting Mode, or with the Battery
Level indicator displayed for two or three minutes without performing any operation,
it returns to the Timekeeping Mode automatically.
• If you leave the watch with the Last signal screen displayed for one or two minutes
without performing any operation, it returns to the Timekeeping Mode automatically.
• If you leave the watch with a flashing setting on the display for two or three minutes
without performing any operation, the watch exits the setting screen automatically.
Power Supply: Solar cell and a rechargeable battery
Approximate Battery Operating Time
6 months (from full charge to Level 4 when the watch is not exposed to light)
under the following conditions:
• Display on 18 hours per day, sleep state 6 hours per day
• 1 illumination operation (1.5 seconds) per day
• 10 seconds of alarm operation per day
• 6 minutes of signal reception per day
Frequent use of illumination can shorten battery operating time.