Radio watches

Radio-controlled watches automatically set the time and date according to the so-called atomic clock. Atomic clocks are the most accurate clocks in the world and are used in GPS satellites or in radio towers to send out a uniform time. The atomically accurate time is important for computers, smartphones, airports or even for train stations or the Internet. 

There are a total of six radio towers that permanently broadcast the time.
For the European region, the towers are located in Mainflingen (DE) and Anthorn (UK). In Japan, there are two towers in Fukushima and Fukuoka. Large parts of Canada, Central and South America receive the signal from Colorado (US) and the sixth tower provides parts of China with the exact time from Shangqiu City.

CASIO's "Multi Band 6" watches can receive all of these six radio towers. Depending on the area in which the watch is to be used, it is sufficient to set the appropriate time zone on the watch — the date and time are set completely automatically.