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  2. Solar-powered watch - Wikipedia

    en.wikipedia.org/wiki/Solar-powered_watch

    Some of the early solar watches of the 1970s had innovative and unique designs to accommodate the array of photovoltaic solar cells needed to power them (Synchronar, Nepro, Sicura and some models by Cristalonic, Alba, Rhythm, Seiko and Citizen). In 1996, Citizen started to sell analog light-powered watches under the Eco-Drive name. [2]

  3. Eco-Drive - Wikipedia

    en.wikipedia.org/wiki/Eco-Drive

    The technical platform that made the Eco-Drive concept possible was the Eco-Drive caliber 7878 movement. This movement was the first light-powered movement where the solar cells could be mounted under the dial. Previous light powered watches from Citizen and other manufacturers had the solar cell(s) mounted directly on the dial.

  4. Casio Edifice - Wikipedia

    en.wikipedia.org/wiki/Casio_Edifice

    Edifice watches range from basic chronograph to more advanced models with more computerised movements. Many Edifice watches utilise Tough Solar, Casio's brand name for solar powered batteries. More advanced models are "Waveceptors" which can calibrate themselves with atomic clocks via radio waves. Some models have Bluetooth connectivity which ...

  5. Automatic quartz - Wikipedia

    en.wikipedia.org/wiki/Automatic_quartz

    The first such watch was released in Germany in January 1988 and April of the same year in Japan (under the name Auto-Quartz). [3] The watches had an average monthly rate of ±15 sec and provided 75 hours of continuous operation when fully powered. Early automatic quartz movements were called AGS (Automatic Generating System).

  6. 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 ...

  7. Junghans - Wikipedia

    en.wikipedia.org/wiki/Junghans

    Junghans Uhren GmbH is a German watch and clock manufacturer. The company is located in the district of Rottweil, in the town of Schramberg, Baden-Württemberg, southwest Germany. In 1903, Junghans was the largest watch factory in the world and in 1956 it was the third largest chronometer manufacturer right behind Rolex and Omega. [1]

  8. Watch - Wikipedia

    en.wikipedia.org/wiki/Watch

    Rechargeable batteries are used in some solar-powered watches. Some electronic watches are powered by the movement of the wearer. For instance, Seiko's kinetic-powered quartz watches use the motion of the wearer's arm: turning a rotating weight which causes a tiny generator to supply power to charge a rechargeable battery that runs the watch ...

  9. Garmin Fenix - Wikipedia

    en.wikipedia.org/wiki/Garmin_Fenix

    Fenix 6 Solar July 8, 2020 [24] [25] Mid-cycle refresh: introduced solar charging option for all units Fenix 7 January 18, 2022 [26] [27] [28] Elevate V4 Released in conjunction with the Garmin Epix Gen 2: Fenix 7 Pro May 31, 2023 [29] [30] Elevate V5 Mid-cycle refresh, released with the Epix Pro Fenix 8 August 27, 2024 [31]