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  2. 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 ...

  3. Citizen Watch - Wikipedia

    en.wikipedia.org/wiki/Citizen_Watch

    Eco-Drive watches use a battery recharged by a solar panel hidden under the watch face. In the rare and discontinued Eco-Drive Duo series, the solar power was supplemented by an automatic quartz power source. One early model, called the Citizen Vitality, used the watch hands to drive a small electric generator, but was discontinued following ...

  4. Automatic quartz - Wikipedia

    en.wikipedia.org/wiki/Automatic_quartz

    204.901 (small 8.75 lignes used primarily in women's watches) 204.911 (replacement for the 204.901 upgrading from a capacitor to a rechargeable battery) 205.111 (discontinued and replaced by the 205.911 which upgraded from a capacitor to a rechargeable battery) 205.711 (15 jeweled movement used only by Swatch Watch for a variety of its fashion ...

  5. Our Favorite Citizen Watches for Men: Eco-Drive, Sports ... - AOL

    www.aol.com/lifestyle/favorite-citizen-watches...

    Citizen’s Eco-Drive technology makes these watches some of the most environmentally friendly on the market. Our Favorite Citizen Watches for Men: Eco-Drive, Sports Watches, Dress Watches ...

  6. 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]

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