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2. Citizen Watch - Wikipedia

   en.wikipedia.org/wiki/Citizen_Watch

   However, the only Eco-Drive system described on the Citizen Watch official website is the one depending solely on light to recharge. Features similar to the Eco-Drive have been developed by other manufacturers like Casio and Junghans. All Citizen Eco-Drive movements are made in Japan but the case or the bracelet may also be made in China.

3. Solar-powered watch - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_watch

   In 1996, Citizen started to sell analog light-powered watches under the Eco-Drive name. [2] Since their introduction, photovoltaic devices have greatly improved their efficiency and thereby their capacity. Watchmakers have developed their technology such that solar-powered watches had by 2009 become a major part of their range. [3]

4. Eco-Drive - Wikipedia

   en.wikipedia.org/wiki/Eco-Drive

   Citizen Eco-Drive Thermo watches were introduced in 1999 and use the temperature difference between the wearer's arm and the surrounding environment as a power source. The rare Eco-Drive Thermo watches use the Seebeck effect to generate thermo electricity that powers the electronic movement and charges the secondary power cell. In the sun or in ...

5. Automatic quartz - Wikipedia

   en.wikipedia.org/wiki/Automatic_quartz

   This model was an attempt to enter higher-priced markets (at a cost of around $1000 USD), but the technology failed to attract consumer interest and Citizen has since stopped making use of the unique movement. No other autoquartz powered watch from Citizen is known; all other Eco-Drive models only use solar power or thermal power. [citation needed]

6. Category:Citizen Watch - Wikipedia

   en.wikipedia.org/wiki/Category:Citizen_Watch

   Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

7. 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.