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2. Automatic quartz - Wikipedia

   en.wikipedia.org/wiki/Automatic_quartz

   Seiko AGS SCUBA Diver 200m 5M23-6A60, 1993. 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 ...

3. Seiko - Wikipedia

   en.wikipedia.org/wiki/Seiko

   Seiko put a second crystal in the watch that is linked with a processor that detects the change in temperature and signals the main oscillator to compensate. The result was a huge improvement in the watch's accuracy from five seconds per month to five seconds per year. Kinetic watches were introduced by Seiko in 1986 at the Basel Fair Trade ...

4. Automatic watch - Wikipedia

   en.wikipedia.org/wiki/Automatic_watch

   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] It is distinguished from a manual watch in that a manual watch must have its mainspring wound by hand at regular ...

5. Spring Drive - Wikipedia

   en.wikipedia.org/wiki/Spring_Drive

   The Spring Drive uses a conventional mainspring and barrel along with automatic and/or stem winding to store energy, just as in a mechanical watch. 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 a stator.

6. Watch - Wikipedia

   en.wikipedia.org/wiki/Watch

   A Grand Seiko Automatic watch A self-winding or automatic watch is one that rewinds the mainspring of a mechanical movement by the natural motions of the wearer's body. The first self-winding mechanism was invented for pocket watches in 1770 by Abraham-Louis Perrelet, [ 61 ] but the first " self-winding ", or "automatic", wristwatch was the ...

7. Chronograph - Wikipedia

   en.wikipedia.org/wiki/Chronograph

   Chronograph. An Omega Speedmaster Professional, which is commonly regarded as one of the most iconic chronographs ever produced. Gallet MultiChron Astronomic ( c. 1959 )—complex mechanical chronograph with 12-hour recording capabilities, automatic day, date, month, and moon phase display. A chronograph is a specific type of watch that is used ...