Citizen Watch Co., Ltd. (シチズン時計株式会社 Shichizun tokei Kabushiki-gaisha) is the core company of a Japanese global corporate group based in Tokyo, Japan. The company was founded in 1930 by Japanese and Swiss investors. 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. It is known as the manufacturer of Cincom precision lathe machine tools and Citizen watches. The brand Citizen was first registered in Switzerland by Schmid in 1918. The development of Citizen until World War II relied on technology transfer from Switzerland.