Rolex Oyster Perpetual Datejust, Руководство пользователя

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Unscrew and then pull out
To screw the crown back down against
the case, return it to position 1 and
apply light pressure on it while screwing
it down clockwise against the case.
After every use, carefully screw the crown
back down against the case to guarantee
the waterproofness. The crown should never
be unscrewed under water.