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2. Rotary Watches - Wikipedia

   en.wikipedia.org/wiki/Rotary_Watches

   rotarywatches .com. Rotary Watches Ltd was established at La Chaux-de-Fonds, Switzerland by Moise Dreyfuss in 1895. By the 1920s family members Georges and Sylvain Dreyfuss began exporting Rotary watches to Britain, which was to become the company's most successful market. Rotary later became the official watch supplier for the British Army.

3. Watch - Wikipedia

   en.wikipedia.org/wiki/Watch

   Watch. A watch is a portable timepiece intended to be carried or worn by a person. It is designed to keep a consistent movement despite the motions caused by the person's activities. A wristwatch is designed to be worn around the wrist, attached by a watch strap or other type of bracelet, including metal bands, leather straps, or any other kind ...

4. Automatic watch - Wikipedia

   en.wikipedia.org/wiki/Automatic_watch

   An automatic watch, also known as a self-winding watch or simply an automatic, is a mechanical watch where the natural motion of the wearer provides energy to wind the mainspring, making manual winding unnecessary if worn enough. [ 1] It is distinguished from a manual watch in that a manual watch must have its mainspring wound by hand at ...

5. Roger Dubuis - Wikipedia

   en.wikipedia.org/wiki/Roger_Dubuis

   RD820SQ Automatic skeleton watch with micro-rotor [13] RD505SQ Single Flying Tourbillon [14] RD01SQ Skeleton double flying tourbillon [15] RD101 Quatuor, with four sprung balances [16] RD103SQ Double sprung balances with differential - this was the first Roger Dubuis movement co-created in partnership with Lamborghini Squadra Corse. [17]

6. Gruen Watch Co. - Wikipedia

   en.wikipedia.org/wiki/Gruen_Watch_Co.

   The Gruen Watch Company was formerly one of the largest watch manufacturers in the United States. It was in business from about 1894 to 1958 and was based in Cincinnati , Ohio . It was founded in 1894 by German-born watchmaker Dietrich Grün, who changed the spelling of his name to "Gruen" because the letter ü does not exist in English.

7. Hamilton Watch Company - Wikipedia

   en.wikipedia.org/wiki/Hamilton_Watch_Company

   The Hamilton Watch Company is a Swiss manufacturer of wristwatches based in Bienne, Switzerland. Founded in 1892 as an American firm, the Hamilton Watch Company ended American manufacture in 1969, shifting manufacturing operations to the Buren factory in Switzerland. Through a series of mergers and acquisitions, the Hamilton Watch Company ...