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cosmograph

  1. General Watch Discussions:
    Having last worn a mechanical watch at school, many years ago, I recall its accuracy being around 30 seconds or so per day. It was a "Seiko 5", so a reasonable quality automatic. I was expecting a lot better from the Cosmograph Daytona, particularly with Rolex's claims of better than COSC...
  2. Rolex
    I have bought a Rolex Cosmograph Daytona a week ago :) I understand the auto-wind mechanism is bi-directional, so I will use that mode on a watch winder. My questions :) 1/ How many turns/revolutions are needed to fill its power reserve 100% from empty? 2/ How many...
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