As there are tons of products out there all claiming to be water-resistant to a certain degree, it’s worth laying out just what all those varying certifications really mean.
– A watch that does not state any water resistance is not guaranteed at any level and should be kept dry at all times.
– A timepiece certified for 30m/3ATM will withstand accidental or brief immersion in water, but should not be exposed to prolonged immersion.
– A 50m/5 ATM watch will be suitable for taking a dip and surface swimming, but should not be used for any high pressure activities such as snorkeling, jumping in or diving.
– A watch rated 100m/10 ATM will be suitable for snorkeling and shallow diving.
All of the watches featured here are certified to at least 50m/5ATM, so you can enjoy casual swims to your heart’s content, while some of the timepieces included are capable of exposure to more serious pressures.