Anti-Magnetism; Taking Care Of Your Alpina Watch - Alpina AL-240 Manual De Instrucciones

3.4
Magnetic fields can significantly impact
the precision of your watch. There are
many sources of magnetic fields, such
as mobile phones, iPads, computers,
loudspeakers, refrigerators and other
electronic devices. The more powerful
the magnetic field the higher the impact
on your watch. All Alpina watches
designated by "4", i.e. the "Alpiner 4",
are anti-magnetic. This means that they
have a minimal deviation when exposed
to a certain level of magnetic field.
other functions
Warranty-gé n é r al-2015.indd 32
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ANTI-
MAGNETISM
32
Alpina "4" anti-magnetic
conform to the international ISO 764
standard which defines the resistance of
watches to magnetic fields. According to
ISO 764 a watch must resist exposition
to a direct current magnetic field of 4,800
A/m. The watch must keep its accuracy
to ± 30 seconds/day as measured
before the test in order to be recognised
as a magnetic-resistant watch.
watches
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