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A Casio solar-powered watch, manufactured no later than 2009. Typically, sunlight and artificial light are absorbed by a solar panel behind the crystal. The dial is either on a layer above or actually on the solar panel. This solar panel converts the light into electrical energy to power the watch. The watch will usually store energy in a ...
Pulsar (watch) A modern analog Pulsar watch. Pulsar is a watch brand and currently a Seiko Watch Corporation of America (SCA) division. Pulsar was the world's first electronic digital watch. Current Pulsar watches are mostly analog and use the same movements in Seikos such as the 7T62 quartz chronograph movement. Pulsar quartz chronograph.
Seiko Group Corporation (セイコーグループ株式会社, Seikō Gurūpu kabushiki gaisha), commonly known as Seiko ( / ˈseɪkoʊ / SAY-koh, Japanese: [seːkoː] ), is a Japanese maker of watches, clocks, electronic devices, semiconductors, jewelry, and optical products. Founded in 1881 by Kintarō Hattori in Tokyo, Seiko introduced the ...
Analogue. Introduced. December 25, 1969. Quartz Movement of the Seiko Astron, 1969 (Deutsches Uhrenmuseum, Inv. Inv. 2010-006) The Astron wristwatch, formally known as the Seiko Quartz-Astron 35SQ, was the world's first "quartz clock" wristwatch. It is now registered on the List of IEEE Milestones as a key advance in electrical engineering .
Chronograph. An Omega Speedmaster Professional, which is commonly regarded as one of the most iconic chronographs ever produced. Gallet MultiChron Astronomic ( c. 1959 )—complex mechanical chronograph with 12-hour recording capabilities, automatic day, date, month, and moon phase display. A chronograph is a specific type of watch that is used ...
Eco-Drive concept. 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.
Citizen Watch Co., Ltd. Citizen Watch Co., Ltd. (シチズン時計株式会社, Shichizun tokei Kabushiki-gaisha) is an electronics company primarily known for its watches and is the core company of a Japanese global corporate group based in Nishitokyo, Tokyo, Japan. In addition to Citizen brand watches, it is the parent of American watch ...
Digital. Introduced. June 1989 [1] The Casio F-91W is a digital watch manufactured by Japanese electronics company Casio. Introduced in June 1989 [1] as a successor of the F-87W, [2] it is popular for its low price and long battery life. [3] As of 2011, annual production of the watch is 3 million units, which makes it the most sold watch in the ...