This is what watches actually withstand:
30 meters / 3ATM - Withstands a splash of water (hand washing), but should not be bathed or showered with.
50 meters / 5 ATM - Withstands a splash of water and can in theory be showered with, although it is not recommended.
100 meters / 10 ATM – Withstands swimming at sea level.
200 meters / 20 ATM – Withstands water sports activities such as diving and free diving.
All our watches are between 5 and 20 ATM depending on which model you have. You will find more information about your particular model on the product page of the specific watch.