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2. Astron (wristwatch) - Wikipedia

   en.wikipedia.org/wiki/Astron_(wristwatch)

   The Astron was unveiled in Tokyo on December 25, 1969, after ten years of research and development at Suwa Seikosha (currently named Seiko Epson), a manufacturing company of Seiko Group. Within one week 100 gold watches had been sold, at a retail price of 450,000 yen ( US$1,250 (equivalent to $10,386 in 2023)) each (at the time, equivalent to ...

3. GPS watch - Wikipedia

   en.wikipedia.org/wiki/GPS_watch

   The watch can have other features and capabilities depending on its intended purpose and be a smartwatch. GPS watches are most often used for sports and fitness purposes. Many can connect to external sensors by the wireless ANT+ protocol, and/or to a computer by USB to transfer data and configuration.

4. Seiko Group - Wikipedia

   en.wikipedia.org/wiki/Seiko_Group

   Seiko, SII and Epson logos. Three companies share "Seiko" in their official names but have different corporate visual identities.. Seiko Group (セイコー・グループ, Seikō Gurūpu) was a Japanese corporate group consisting of three core companies Seiko Holdings Corp. (Seiko; f/k/a K. Hattori & Co., Hattori Seiko), Seiko Instruments Inc. (SII; f/k/a Daini Seikosha, Seiko Instruments ...

5. Orient Watch - Wikipedia

   en.wikipedia.org/wiki/Orient_Watch

   Orient (オリエント時計株式会社, Oriento Tokei Kabushiki-gaisha) is a Japanese watch manufacturer founded in 1950. Established as an independent company in 1950, it became a functional subsidiary of Epson in 2009 before being fully integrated into the company in 2017.

6. Epson - Wikipedia

   en.wikipedia.org/wiki/Epson

   The watch business is the root of the company's ultra-precision machining and micromechatronics technologies and still a major business for Seiko Epson, although it accounts for a low percentage of total revenues. [6] [7] Watches made by the company

7. Spring Drive - Wikipedia

   en.wikipedia.org/wiki/Spring_Drive

   The Spring Drive uses a conventional mainspring [3] and barrel [4] along with automatic and/or stem winding to store energy, just as in a mechanical watch. [3] However, the escapement and balance wheel in mechanical watches is replaced by Seiko's Tri-synchro Regulator system, a phase-locked loop wherein a rotor, which Seiko refers to as a "glide wheel", is powered by the mainspring barrel via ...