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Roamer is a Swiss watch manufacturer which is owned by Hong Kong-based Chungnam Corporation Limited.
Roamer was founded in Solothurn, Switzerland, in 1888 by Fritz Meyer. At first, Meyer and employees concentrated on manufacturing cylinder escapements, in 1904 Meyer began assembling watches. In 1905  Meyer joined with fellow watchmaker Johann Studeli to form the partnership Meyer and Studeli (MST). In the same year Meyer won a Bronze medal at the Liege World Fair. The partnership continued to develop new calibres and enter them into more World Fairs, winning Silver Medals at the Milan Fair in 1906 and Brussels Fair in 1910.
The earliest identified watch is an unmarked lady's pocket watch containing an MST 41 cylinder escapement that has London silver hallmarks for 1908.
In 1917 they purchased fellow Solothurn watchmaker L Tieche Gammeter (LTG). LTG had previously registered the brand "Roamer" in 1908. In 1918 the partnership incorporated into the company Meyer & Studeli SA.
By 1923, production grew to one million units. The jeweled lever-escapement watches were sold under the brand 'Roamer'. Cylinder, and later pin-lever, watches were sold under the brands Medana and Meda. In 1932 the company started its own dial production line. In 1945, a representative office opened in New York City and in 1952 Meyer and Studeli officially changed its name to Roamer Watch Co. SA. In 1955, Roamer patented the Anfibio watertight watchcase, which proved to be a commercial success. The company launched its first quartz movement in 1972.
In 2003, Roamer returned to manufacturing mechanical watches.
In 2013, its 125. year anniversary, Roamer launched a limited new edition of the Stingray Chrono Diver watch.