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Analogue. Introduced. December 25, 1969. Quartz Movement of the Seiko Astron, 1969 (Deutsches Uhrenmuseum, Inv. Inv. 2010-006) The Astron wristwatch, formally known as the Seiko Quartz-Astron 35SQ, was the world's first "quartz clock" wristwatch. It is now registered on the List of IEEE Milestones as a key advance in electrical engineering .
A diving watch, also commonly referred to as a diver's or dive watch, is a watch designed for underwater diving that features, as a minimum, a water resistance greater than 1.1 MPa (11 atm), the equivalent of 100 m (330 ft). The typical diver's watch will have a water resistance of around 200 to 300 m (660 to 980 ft), though modern technology ...
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 ...
In the United States, Seiko watches are sold primarily by fine jewelers, department stores, and 19 Seiko company stores. Brands and product lines. Seiko produces watches with quartz, kinetic, solar, and mechanical movements of varying prices, ranging from around ¥4,000 (US$45) to ¥50,000,000 (US$554,000).
Names in this list require an article about the watch brand or watchmaker This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources .
The watches are tested in static or still water under 125% of the rated (water) pressure, thus a watch with a 200-metre rating will be water-resistant if it is stationary and under 250 metres of static water. The testing of the water-resistance is fundamentally different from non-dive watches, because every watch has to be fully tested.
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