Chr. Ward C11 MAKAIRA PRO 500, Owner'S Handbook Manual

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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 watersports 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
hosepipe usage.
5 aTM (50 MeTRes)
Water resistant to most household
shower units.
10 aTM (100 MeTRes)
Safe to use while snorkelling in open
water.
30 aTM
(300 MeTRes)
Ideal for experienced divers and those
practising scuba-diving.
50 aTM (500 MeTRes)
Professional divers, experiencing
prolonged exposure underwater.
100 aTM (1000 MeTRes)
Professional deep sea diving.
WATeR ResIsTAnCe