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Environments in which it is difficult to receive a radio signal
Avoid putting the watch in such places when it receives radio signals.
Close to home electrical appliances
such as TV’s, refrigerators or air
conditioners
Close to OA equipment such as
mobile phones, personal computers
or fax machines
Close to steel desks or other
furniture made of metal
In places generating radio
interference, such as construction
sites or places with heavy traffic
Close to overhead power lines, TV
stations, train cables
Inside a building, between tall
buildings, underground
Inside a vehicle, train, or airplane
EN 24
3
HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)
bCAUTION
The watch may display the wrong time if it fails to receive radio signals properly
because of interference.
The watch may also fail to receive radio signals properly depending on the location or
radio wave receiving conditions.
In this case, move the watch to another place where it can receive radio signals.
When the watch is out of reception range, its accurate quartz movement (loss / gain:
±15 seconds per month on average) will continue to keep the time.
The time signal transmission may be stopped during maintenance of the facilities of
the (each) transmitting station or because of a lightning strike.
In such a case, see the (each) station’s website for further information or contact
SEIKO CUSTOMER SERVICE CENTER.
Websites of transmission stations (As of August 2020)
Japan : National Institute of Information and Communications Technology (Japan
Standard Time Project) http://jjy.nict.go.jp/
China : NTSC http://www.ntsc.cas.cn/
U.S.A. : NIST https://www.nist.gov/pml/time-and-frequency-division/radio-
stations/wwvb
Germany : PTB https://www.ptb.de/cms/en.html
UK : NPL https://www.npl.co.uk/
EN 25
3
HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)
How to check the reception status
How to display the reception results
The seconds hand indicates the latest reception results (Yes/No) of a radio signal for 5 seconds.
1Press the button once and then
release it.
The seconds hand indicates the reception
results.
Press the
button once
and then
release it
2Check if the reception was
successful (within 5 seconds).
If a reception was
successful: The seconds
hand points to Y
(Yes: the 10-second
position)
If a reception has failed: The
seconds hand points to N
(No: the 20-second
position)
* If the button is pressed after 5 seconds have
elapsed or while the seconds hand is moving to
display the reception results, the reception
results display function is cancelled and the
watch returns to the TIME display mode.
EN 26
3
HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)
If a reception was successful: The seconds hand points to Y
A radio signal has been received successfully. Use the watch without any adjustments.
* When the watch does not display the correct time and date even after successfully receiving a radio signal, refer
to Troubleshooting.→ Misalignment of the time and hand positions P.74, and Misalignment of the date P.76
If reception has failed: The seconds hand points to N
Place the watch in a place where it can easily receive a radio signal, or change its direction.
Even within the radio signal reception range, this watch may fail to receive a radio signal depending on
the condition (due to the influence of weather, terrain, buildings, or direction). “Environments in which it
is difficult to receive a radio signal” → P.24
This watch is unable to receive radio signals outside the reception range. “Radio signal reception range
indication” → P.18
Make sure that the time zone is correctly selected before attempting radio signal reception.
When the time zone is set to a region other than the radio signal reception range, radio signals cannot
be received. Check the selection of time zone.
“How to select the time zone (How to display the local time around the world)” → P.30
“Time zone display and time difference table” → P.32
Attempt to receive a radio signal in a different time period. (In the case of manual reception)
Receiving environments differ according to time periods even at the same place. Due to radio signal
characteristics, the watch is able to easily receive radio signals during nighttime hours.
If you use the watch in a place or region outside the radio signal reception range or when the watch
cannot successfully receive radio signals, manually set the time and date.
“How to manually set the time” → P.61
“How to manually set the date” → P.63
EN 27
3
HOW TO SET THE TIME (RADIO SIGNAL RECEPTION)
8


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