Seiko A.G.S. “Kinetic” (1988) The Seiko A.G.S. introduced “Kinetic” winding.Seiko did not give up on mechanical watchmaking innovations and other types of technologies after it introduced its quartz watches. Unfortunately the Jayhawk Production Date Calculator (by John Gauch) which is linked to in the Quartzimodo article no longer seems to be available, so we built our own. The movement, caliber 6139, beat at a high frequency of 21,600 vph and the 30-mm stainless steel case was water-resistant to 70 meters. The watch’s tuning-fork-shaped quartz oscillator gave the Astron’s movement, Caliber 35A, an amazing accuracy of just +/- 5 seconds per month, far greater than any mechanical movement. First Grand Seiko (1960) The first Grand Seiko watch established Seiko’s new standards for precision.This was the watch that Seiko created to be “the best in the world” in terms of accuracy and precision.
Basically, it is the utilization of an event, a person, an object, language in a time when that event, person or object was not in existence. In other words, an anachronism is something that occurs out of its proper time. Seiko Quartz Astron (1969) The very same year that Seiko was winning the race to the market for an automatic chronograph watch, it also unveiled the watch that at one point threatened to render all mechanical watches obsolete. The Astron’s system is superior even to those of radio-controlled watches, which receive terrestrial radio signals from atomic clocks, in that it automatically recognizes what time zone it is in. The SDW379P (left) predates the SDWA65P (middle) while the latter in turn, predates the SDWC02P (right). Pics courtesy of The same model numbering convention holds true for other Seiko models. Interestingly, whereas quartz watches would develop a reputation as inexpensive timepieces for the masses, the first one was decidedly luxurious, boasting an 18k gold case.
There are also some exceptions to this rule. Seiko put a second crystal in the watch that’s linked with a processor that detects the change in temperature and signals the main oscillator to compensate. The other number you will need is the serial number. This reference model number is a combination of two numbers: movement caliber case code Each of these two numbers are four digits long and they are separated by a hyphen. In the example images the reference model number is highlighted in red. This will allow you to type in the grade of your Elgin pocket watch, and show you all the part numbers for the various parts.