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Checking the time, date and day
* The hands of this watch cannot be moved by turning the crown.
* So when adjusting the time, date and day, refer to the following regarding the procedures.
2
When the time, date
and day are correct
When ether
Time zone
time, date or
confirmation
day is incorrect
→ P.31
* When the watch is not displaying the precise time, date and day even after successfully receiving a radio signal →
In this case, refer to Troubleshooting: Misalignment of the time and hands P.90 and Misalignment of the date and
day P.92.
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■ Automatic reception and manual reception
● Automatic reception
This watch sets the time, date and day by automatically receiving a radio signal at a fixed time.
It automatically receives a radio signal before 2:00 AM, 3:00 AM and 4:00 AM.
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* When the reception is successful, the watch finishes the automatic reception.
• Place the watch in a place where it can easily receive a radio signal (by the window, etc.).
• Do not move the watch during the radio signal reception.
"To improve radio signal reception" → P.24
● Manual reception
This watch can receive a radio signal arbitrarily at any time other than the automatic reception mode.
"How to conduct manual reception" → P.70
* Radio signal reception results depend on the receiving environment. "Environments in which it is difficult to receive
a radio signal" → P.25
* The watch cannot receive a radio signal outside the radio signal reception range. "Radio signal reception range
indication" → P.19
* When the time zone is set for a region other than the radio signal reception range, radio signals cannot be received.
Check the selection of time zone. "Time zone display and time difference table" → P.33
* When the watch is not displaying the precise time, date and day even after successfully receiving a radio signal.
In this case, refer to "Troubleshooting: Misalignment of the time and hands" → P.90 and "Misalignment of the date
and day" → P.92.
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Use the watch without
adjustment.
When the radio
Setting the time, date
signal can be
and day by receiving a
received
radio signal → P.70
Radio signal reception range indication → P.19
Environments in which it is difficult to receive a radio signal → P.25
Manually set the time
→ P.73
When a radio
Manually set the date
signal cannot
→ P.75
be received
Manually set the date and day
→ P.78
Setting the time, date and day by receiving a radio signal
■ Mechanism of radio signal reception
The radio-controlled watch displays the precise time, date and day by automatically receiving and
synchronizing itself with the radio signal of an official standard frequency.
Transmitting
Station
Official standard
frequency
Cesium
Atomic
Clock
Time signal transmitted by a standard frequency is based on a super accurate "Cesium Atomic Clock" that
may have a 1 second loss or gain per one hundred thousand years.
Reception environment
■ Radio signal reception range indication
This watch receives standard radio signals from Japan (2 stations), China, U.S.A., Germany and UK.
When you set the watch to a time zone in Japan, China, U.S.A., Germany or UK, the official standard
frequencies the watch receives will be automatically changed accordingly to the selected time zone.
"How to select the time zone (How to display the local time around the world)" → P.31
Germany (DCF77), UK (MSF)
P.23
China (BPC)
P.21
Radio-controlled watch
Receive radio signals through
the antenna inside the watch
Analyze time information
Display the current time, date
and day
Japan (JJY)
P.20
U.S.A.
(WWVB)
P.22
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