Seiko V.F.A. Quartz 3823-7001
Pentru cunoscatori.
Ceasul functioneaza excelent.
Diametru 37 mm.
Bratara nu cred ca este cea originala.
This was Seikos first commercially viable Quartz watches. Extremely accurate for the time at 5s per month but slightly expensive at JPY 150.000 (about half a car or 6 KS watches) />
Seiko created the first true Quartz with a step-down motor that became a reliable standard in the industry. The Seiko 3823A aka 38SQ is their first mass-produced Quartz introduced to market in 1971 a year ahead of the European competitors who then had tiny stepping-motors only in prototype versions. Simply compare this 1971 construction against Swiss and American concepts produced later.
Japanese movements were always known for their perfect allignment of the components. No expense was spared on this revolutionary product with oustanding craftmanship and even with adjustment to 6 positions and temperature compensation providing VFA = Very Fine Adjustment to 5 sec/month...all for a price of ¥150.000. The movement is "Superior" in every aspect and this trademark was later used instead of VFA. As development progressed in the electronics industry upgrades were applied to the green electronic module with quartz, micro-chip and trimmer. The mechanical module remained unchanged with a small stepping motor and a large external coil and the center pinion secured with a jeweled backlash pin very common in early Quartz watches. crazywatches.pl/seiko-superior-3823a-vfa-quartz-1971
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