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Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency , so that quartz clocks and watches are at least an order of magnitude more accurate than mechanical clocks .
Wako was founded in 1881 by Kintarō Hattori as a watch and jewelry shop called K. Hattori (now Seiko Group Corporation) in Ginza. In 1947, the retail division split off as Wako Co., Ltd. From 1894 to 1921, the Hattori Clock Tower stood on the site that Wako occupies today. In 1921, the Hattori Clock Tower was demolished to rebuild a new one.
Portrait of Kintarō Hattori, 1916. In 1881, Seiko founder Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" (服部時計店) in Tokyo. [12]Kintarō Hattori had been working as clockmaker apprentice since the age of 13, with multiple stints in different watch shops, such as “Kobayashi Clock Shop”, run by an expert technician named Seijiro Sakurai; “Kameda Clock Shop ...
Seikosha Co., Ltd. (精工舎, Seikōsha) was a branch of the Japanese company Seiko that produced clocks, watches, shutters, computer printers and other devices. It was the root of the manufacturing companies of the Seiko Group .
The Spring Drive movement was announced publicly in 1997 and presented at the 1998 Basel Watch Fair. [1] [8] In 1999, the first production models were made available in Japan as limited edition, manual-wind watches in both the Credor and Seiko brands. [2] [5] [8] The first non-limited model was released in Japan in 2002. [5]
In 1937, Daini Seikosha Co., Ltd. (第二精工舎, Dai-ni-seikōsha), literally the second workshop for manufacturing Seiko timepieces, was established in Kamedo, Kōtō, Tokyo as a spin-off of the watch manufacturing division from Seikosha (精工舎, Seikōsha), so had been making the Seiko watches until 2020. The company changed its name to ...
The Ruputer is a wristwatch computer developed in 1998 by Seiko Instruments, a subsidiary of the Seiko Group. It was introduced on 10 June 1998. [1] In the US, it was later marketed as the onHand PC by Matsucom. The Ruputer has a 16-bit, 3.6 MHz processor and 2 MB of non-volatile storage memory and 128 KB of RAM.
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]