CAUTION
・ 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 transmitting stations (as of January 2014)
Japan : NICT (Japan Standard Time Group) http://www.jjy.nict.go.jp/
China : NTSC http://www.ntsc.ac.cn
U.S.A. : NIST http://www.nist.gov/physlab/div847/grp40/wwvb.cfm
Germany : PTB http://www.ptb.de/index en.html
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■ Environments in which it is difficult to receive a radio signal
・ Close to home electrical
appliances such as TV's,
refrigerators or air conditioners
・ Close to OA devises 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
p o w e r l i n e s , T V
stations, train cables.
・ Inside a building, between tall
buildings, underground.
・ Inside a vehicle, train, or airplane
Avoid putting the watch
in such places when it
receives radio signals.
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■ To improve radio signal reception
※ If the button or crown is operated while the watch is
receiving a radio signal, the reception will be cancelled.
・ Place the watch in a place where it can easily receive a radio signal such as near a window.
※ Locations of transmitting stations → Radio Signal Reception Range Indication P.100
Antenna
・Do not move the watch while it is receiving radio signals.
To enhance the reception of radio signals, do not move the watch or do not
change the orientation of the watch while it is receiving radio signals.
The antenna is embedded at the 8 o'clock position of the watch. Turning the
antenna toward the outside of a window or the direction facing transmitting
stations helps improve radio signal reception.
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■ Radio signal reception range : Germany (DCF77)
DCF77 is operated by PTB.
Southeastern Frankfurt
Mainflingen transmitting station : 77.5 kHz
※ PTB：Physikalisch-Technische Bundesanstalt
※ The watch may fail to receive radio signals
depending on the reception conditions (weather,
geographic locations, radio disturbances such
as tall buildings, and orientation of the watch).
Environments in which it is difficult to receive a
radio signal on P.106.
1,000km
The reception range from the transmitting station is approximately
1,000km (1,000km radius of the transmitting station)
There are three time differences within the reception range.
Mainflingen
transmitting
station (77.5 kHz)
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