Water Resistance Table
Water resistance is the ability to withstand pressure in/under water. In this sense, the term water resistant can be misleading because it relates to pressure and not physical depth. Generally speaking, a watch used for water sports and swimming should have at least 100m (10bar) water resistance. This table is designed as a guide to pressure/water resistance but always check the manufacturer’s specification to make sure you are using your watch in the correct manner in the appropriate environment:
|Water resistance level||Suitability||Recommendations|
|Water resistant 30 m or 50 m|
(3 ATM or 5 ATM)
|Suitable for washing hands and light splashes.||Not suitable for swimming or diving|
|Water resistant 100 m (10ATM)||Suitable for recreational surfing, swimming, snorkeling, sailing and water sports.||Not suitable for diving|
|Water resistant 200 m (20ATM)||Suitable for professional marine activity and serious surface water sports.||Suitable for diving|
|Diver’s 1000+m (100+ ATM)||Suitable for all water activities||Typical rating for modern diving watches|
Watches and humidity – the real foe!
Please note all watches, even those with 100m+ water resistance, should be kept away from humid shower and spa conditions. Although these watches are watertight, they are not necessarily resistant against humid/hot air which can permeate the watch and allow moisture into the movement.