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Water resistant watches carry a rating which is usually
marked on the watch itself in either meters (m) or Atmospheres (ATM). This
rating indicates how much pressure a watch can withstand when
absolutely still before letting water in. Any movement of the watch
causes greater pressure on the watch, which is why a 50 meter water resist
watch cannot actually be worn to a depth of 50 meters.
Please use the following guide to ensure
you understand the meaning of the different water resistance ratings:
|
Rating |
Suitable for |
|
No rating |
Avoid contact with water |
|
Water Resistant |
Resistant to splashes but not suitable for
showering, washing or immersion in water |
3 ATM
or 30 Meters |
Resistant to washing and showering but not
suitable for swimming |
5 ATM
or 50 Meters |
Resistant to swimming but not diving |
10 ATM
or 100 Meters |
Resistant to pool side diving and snorkelling |
20 ATM
or 200 Meters |
Resistant to scuba diving with oxygen tanks |
Regardless of a watch's water resistance
rating it should not be worn while in the bath, sauna etc as the sudden
change in temperature can cause different components to expand at varying
rates and thereby allow water in. Contact with chemicals (e.g. detergents,
perfume, nail polish remover etc.) should be avoided as these can seriously
effect the water resistance. Always remove your watch before
carrying out activities such as washing-up or washing the car.
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