iwc PORTUGIESER CONSTANT-FORCE TOURBILLON Operating Instructions Manual page 24

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W A T E R - R E S I S T A N C E
The water­resistance of IWC watches is stated in bar and not in
metres. Metres, which are often used elsewhere in the watch indus­
try to indicate water­resistance, cannot be equated with dive depth
because of the test procedures that are frequently used. Water­
resistance shown in metres provides no indication as to actual
use of the watch in the presence of moisture and wetness, and in
or under water. Recommendations for use in connection with the
water­resistance of your watch can be found on the Internet at
www.iwc.com/water­resistance. Your authorized IWC Official Agent
will also be pleased to provide you with information.
To ensure that your watch stays properly water­resistant, you
should have it checked by an IWC service centre at least once
a year. Your watch should also be tested after exposure to un usually
harsh conditions. If the tests are not carried out as stipu lated, or
if the watch is opened by unauthorized persons, IWC will accept
no warranty or liability claims.
Recommendation: Your authorized IWC Official Agent must carry
out a water­resistance test whenever your IWC watch is opened
and serviced.
P O R T U G I E S E R C O N S T A N T - F O R C E T O U R B I L L O N