10
Water resistance
Although your watch has been through vigorous
static pressure testing, it is worth remembering that
there are many variables that can affect the water
resistance of your watch.
For instance, arm movements during swimming
and the sudden impact of diving and water sports
will drastically increase the pressure the watch is
under. Wearing your watch in the bath, shower, or
sauna can also have an effect as a rapid increase
in temperature can cause seals to expand and in
extreme cases, malfunction or create condensation.
For these reasons, the water resistance rating of your
watch (as shown) should only ever be considered
a guideline and we strongly recommend they are
always adhered to.
1 ATM (10 metres)
Safe to wear your watch while
washing your hands with tap water.
3 ATM (30 metres)
Washing your car and/or
general hose pipe usage.
5 ATM (50 metres)
Water resistant to most
household shower units.
15 ATM (150 metres)
Safe to use while snorkelling
in open water.
30 ATM (300 metres)
Ideal for experienced divers and
those practising scuba-diving.
60 ATM (600 metres)
Professional divers, experiencing
prolonged exposure underwater.
100 ATM (1000 metres)
Professional deep sea diving.
How to operate your C50 Malvern Chronometer
Summary of Contents for C50 Malvern
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