Citizen 520 Instruction Manual page 14

For correct use within the design limits of the watch, confirm the level of water-
resistance of your watch, as indicated on the dial and case, and consult the table.
Moderate exposure
to water (washing,
kitchen work,
swimming, etc.)
NO
OK
OK
Examples of use
Marine sports
(skin diving)
NO
NO
OK
Operation of the
Scuba diving
crown or button with
(with air tank)
moisture visible
NO
NO
NO
NO
NO
NO
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