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58
What can I do to ensure that my LONGINES watch
functions perfectly for many years?
Magnetic elds: avoid placing your watch in the vicinity of magnetic
elds. These invisible elds may originate from sources such as hard
drives, medical devices, speakers, televisions and refrigerator doors.
Cases for mobile phones, tablets and laptops, as well as magnetic
fasteners on handbags and purses, are also powerful sources of
magnetic elds.
Salt-water: always rinse your watch in fresh water after swimming
in the sea.
Shocks: avoid subjecting your watch to shocks, including sudden
changes in temperature.
Screw-in crown: always make sure you have screwed the crown in
fully to avoid any humidity getting into the mechanism.
Push-in crown: always push the crown back in to the neutral
position to avoid any humidity getting into the mechanism.
Cleaning: use a toothbrush and soapy water to clean metal bracelets
and water-resistant cases and a soft cloth to dry off afterwards.
Chemical products: avoid all direct contact with solvents, deter-
gents, perfume, cosmetics, etc. which may damage the bracelet or
strap, the case or the seals.
Temperatures: avoid exposing your watch to extreme temperatures
(over 60 ° C or 140 ° F and under 0 ° C or 32 ° F) and to sudden
uctuations in temperature.
Water-resistance: we cannot guarantee that your watch will be
permanently water-resistant. The seal may be affected by wear or
by an accidental shock to the crown. As recommended in our service
instructions, you should have the water-resistant seals of your watch
tested once a year by an approved LONGINES agent.
Chronograph push-pieces: do not adjust the push-pieces under
water as this may allow humidity to get into the mechanism.
TOLERANCES / WINDING
Mechanical movements
The precision of a mechanical movement varies depending on the
wearer’s habits. The majority of LONGINES watches have a precision
of between – 5 and +15 seconds per day.
Winding (crown pushed right in)
The natural movements of your wrist will automatically wind your
Longines watch, which has a power reserve of several dozen hours
(see table of equivalents on p. 60-61). It is only necessary
to wind it manually if your watch/chronograph has not been worn
for one or more days.
Occasional winding: if your watch has not been worn for one or
more days, wind it manually with the crown in position 1.
SPECIAL RECOMMENDATIONS / TOLERANCES
Book_I.indb 58 13.08.19 10:56
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