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2. Seiko - Wikipedia

   en.wikipedia.org/wiki/Seiko

   The 9F quartz movement is used in Grand Seiko quartz watches. [72] The Grand Seiko's 9F quartz movement is assembled entirely by hand by two expert craftsmen. Features include: Backlash auto-adjust mechanism; Twin pulse control motor; Instant date change mechanism – it can change the date display in 1/2000th of a second

3. Orient Watch - Wikipedia

   en.wikipedia.org/wiki/Orient_Watch

   The Royal Orient line was discontinued around 2016, likely to prevent cannibalism between it and fellow Seiko group brands Grand Seiko, and Credor. To celebrate 70 years of the Orient Star line, the Orient Star skeleton watch was introduced with a silicon escapement made using Epson's MEMS technology, which has been used in high end Seiko ...

4. Quartz crisis - Wikipedia

   en.wikipedia.org/wiki/Quartz_crisis

   Quartz movement of the Seiko Astron, 1969. The quartz crisis (Swiss) or quartz revolution (America, Japan and other countries) was the advancement in the watchmaking industry caused by the advent of quartz watches in the 1970s and early 1980s, that largely replaced mechanical watches around the world.

5. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. 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 ...

7. 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 ...