Watch Water Resistance Ratings Explained
Why 30m water resistance doesn't mean you can dive 30 meters deep. Decoding the ratings.
30m / 3 ATM
Splash resistant only. Okay for rain or washing hands. Do NOT swim.
50m / 5 ATM
Suitable for light swimming in shallow water. Not for snorkeling or diving.
100m / 10 ATM
Suitable for swimming and snorkeling. The minimum standard for a 'sports watch'.
200m+ / 20 ATM+
Suitable for scuba diving. Often accompanied by a screw-down crown for added security.