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IN-DEPTH: Grand Seiko Movements – Part I, the Mechanicals - Time and Tide Watches
Grand Seiko, the latest Spring Drive and Hi-Beat movements and Ever-Brilliant Steel. A perfect combination. | Grand Seiko
Powered by a new three-day movement, a mechanical GMT diver's watch joins the Seiko Prospex collection for the first time. - Seiko Luxe
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5 Most Accurate Watch Movements Ever – LIV Swiss Watches
