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2. 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 ...

3. Seiko - Wikipedia

   en.wikipedia.org/wiki/Seiko

   Some Grand Seiko timepieces also incorporate the company's Spring Drive movement, a movement that is a combination of both automatic and quartz timekeeping methods, leading to unparalleled accuracy in the world of automatic wristwatches. The most famous example is the SBGA011 Grand Seiko "Snowflake", housing the 9R Spring Drive movement.

4. Automatic watch - Wikipedia

   en.wikipedia.org/wiki/Automatic_watch

   Video of the rotor turning in an automatic wristwatch having a glass back, when the watch is moved by hand. 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]

5. Automatic quartz - Wikipedia

   en.wikipedia.org/wiki/Automatic_quartz

   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 the inconvenience and environmental impact of ...

6. Mainspring - Wikipedia

   en.wikipedia.org/wiki/Mainspring

   The mainspring of an automatic watch. The spring isn't firmly mounted on the left side, and will slip when fully wound. Self-winding or automatic watches, introduced widely in the 1950s, use the natural motions of the wrist to keep the mainspring wound. A semicircular weight, pivoted at the center of the watch, rotates with each wrist motion.

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   mail.aol.com/?icid=aol.com-nav

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