When traveling, the user may swap the 'home' and 'world' zones, thereby enabling proper time signal reception on a different continent while retaining the other time. The watch actually tracks two time zones-home and world-but synchronizes to the 'home' zone. The watches can synchronize with radio clocks in Japan, North America, and Europe, automatically selecting the correct frequency by location. The Skyhawk A-T line features radio-controlled timekeeping. Synchronized to atomic clocks, these watches are accurate to within one second in one hundred thousand years. Ĭitizen Attesa Eco-Drive ATV53-3023 analog-digital chronograph with 3 area Radio Controlled reception (North America, Europe, Japan) Products Atomic timekeeping Ĭitizen launched the world's first multi-band atomic timekeeping watch in 1993 and has remained a pioneer of this field. The growth of Citizen until World War II relied on technology transfer from Switzerland. The development of this brand was supported in the 1920s by Count Gotō Shinpei with his hope that watches could become affordable to the general public. The brand Citizen was first registered in Switzerland by Schmid in 1918 for watches he sold in Japan. It took over Shokosha Watch Research Institute (founded in 1918) and some facilities of the assembly plant opened in Yokohama in 1912 by the Swiss watchmaker Rodolphe Schmid. The company was founded in 1930 by Japanese and Swiss investors.

In addition to Citizen brand watches, it is the parent of American watch company Bulova, and is also known for manufacturing small electronic devices such as calculators. ( シチズン時計株式会社, Shichizun tokei Kabushiki-gaisha) is an electronics company primarily known for its watches and is the core company of a Japanese global corporate group based in Nishitokyo, Tokyo, Japan.

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