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- La technologie spring drive est utilisée par une famille de mouvements d'horlogerie à remontage automatique conçus et fabriqués par le groupe japonais Seiko depuis 1977, principalement sur des modèles de luxe. (fr)
- Spring Drive is a name given to a series of watch movements produced by Epson in Shiojiri. The concept of using a mainspring to power a quartz timing package was first conceived in 1977 by Yoshikazu Akahane (赤羽 好和) at Suwa Seikosha (now a part of Seiko Epson after a 1985 merger). Specified to one second accuracy per day, the movement uses a conventional gear train as in traditional mechanical watches, but rather than an escapement and balance wheel, instead features Seiko's Tri-synchro Regulator system in which power delivery to the watch hands is regulated based on a reference quartz signal. Commercially released in 1999, the movement is found in watches distributed by the Seiko Watch Corporation, including its Credor, Grand Seiko, Presage, and Prospex brands. (en)
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- La technologie spring drive est utilisée par une famille de mouvements d'horlogerie à remontage automatique conçus et fabriqués par le groupe japonais Seiko depuis 1977, principalement sur des modèles de luxe. (fr)
- Spring Drive is a name given to a series of watch movements produced by Epson in Shiojiri. The concept of using a mainspring to power a quartz timing package was first conceived in 1977 by Yoshikazu Akahane (赤羽 好和) at Suwa Seikosha (now a part of Seiko Epson after a 1985 merger). Specified to one second accuracy per day, the movement uses a conventional gear train as in traditional mechanical watches, but rather than an escapement and balance wheel, instead features Seiko's Tri-synchro Regulator system in which power delivery to the watch hands is regulated based on a reference quartz signal. (en)
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- Spring Drive (fr)
- Spring Drive (en)
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