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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 ...
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 regular ...
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.
In 1999, the first production models were made available in Japan as limited edition, manual-wind watches in both the Credor and Seiko brands. The first non-limited model was released in Japan in 2002. The 1st spring drive automatic-wind movement of Grand Seiko was released in September 2004, the reference number is SBGA001.
Seiko AGS SCUBA Diver 200m 5M23-6A60, 1993. Automatic quartz is a collective term describing watch movements that combine a self-winding rotor mechanism [1] (as used in automatic mechanical watches) to generate electricity with a piezoelectric quartz crystal as its timing element. Such movements aim to provide the advantages of quartz without ...
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 ...
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 .
The Autavia chronograph was introduced in 1962 and featured a rotating bezel, marked in either hours, minutes, decimal minutes (1/100th minute increments), or with a tachymeter scale. All manual-wind Autavias from the 1960s had a black dial with white registers. Early cases had a screw-back, and later models (from and after 1968) had snap-backs.
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