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)
Radio signal reception range: Japan (JJY)
The reception range from the transmitting station is approximately 1,000 km (1,000 km radius of the transmitting station).
Radio signal reception range: China (BPC)
The reception range from the transmitting station is approximately 1,500 km (1,500 km radius of the transmitting station).
Radio signal reception range: U.S.A. (WWVB)
The reception range from the transmitting station is approximately 1,500 km (1,500 km radius of the transmitting station).
There are four time zones within the reception range.
Radio signal reception range: Germany (DCF77), UK (MSF)
Each reception range from the transmitting station of DCF77 and MSF is approximately 1,000 km and 500 km (1,000 km and 500 km radius of the each transmitting station). There are four time zones within the reception range.
To improve radio signal reception
Place the watch in a place where it can easily receive a radio signal such as near a window.
The antenna is embedded at the 9 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.
Locations of transmitting stations
Radio signal reception range indication
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.
If the button or crown is operated while the watch is receiving a radio signal, the reception will be cancelled.
The place where the watch is put before going to bed
Place the watch next to a window facing in the direction of a transmitting station before bedtime because automatic reception is performed late at night.
The standard radio signal is influenced by the distance from the transmitting station, as well as by terrain (including buildings) and weather conditions.
Also, please search for a place to easily receive radio signals when attempting reception.
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 |
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 transmission stations (As of August 2020)
Japan:
National Institute of Information and Communications Technology (Japan Standard Time Project) http://jjy.nict.go.jp/
China:
U.S.A.:
Germany:
UK: