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Water resistance is measured in ATM (atmospheres) with 1 ATM equalling 10 metres
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3 ATM: everyday use but should not be immersed in water. The watch will withstand occasional splashing and
rain but should be kept dry where possible and is not suitable for swimming
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5 ATM: relatively short periods in water including gentle swimming
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10 ATM: suitable for normal swimming but not diving of any kind
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Water resistance is tested in static conditions (i.e. no movement) at the time of manufacture. As time goes on
the seals may deteriorate and/or the use of the watch may weaken the resistance. For example continual
exposure to chlorine, salt or strong soaps may decrease the effectiveness of the seal by drying it out or
causing it to become brittle.
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Using a watch in a hot tub, sauna, bath or shower may cause the seals to expand, compromising the water
resistance or causing complete failure of the watch.
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Sudden or significant variations in temperature may cause materials in a watch to contract, allowing water in
(most likely in the form of condensation), into your watch. As an example, even a 10ATM watch worn in a hot
bath or in the desert sun might experience condensation if plunged straight into a cold swimming pool.
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Constant contact with perspiration or cosmetics may affect the seal, as can sharp knocks
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Never use the crown, the chronograph pushers, or a rotating dial when your watch is under water
WATER RESISTANCE
AVW5839G4
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