Watches Bar Table

Using the table, you can derive up to which water depth you can safely use your watch.

Water Depth Wash Shower Bath Swim Dive
All waterproof details are based on DIN 8310.
30 meters = 3 bar Yes No No No No
50 meters = 5 bar Yes No No No No
100 meters = 10 bar Yes Yes Yes Yes No
200 meters = 20 bar Yes Yes Yes Yes Yes
You should check every 2 - 3 years if your watch is still waterproof.
In case you are unsure please don't use your watch in the water. You will likely increase the life of your watch and save money on expensive repairs. Since the waterproof is not a permanent feature and is influenced by external factors this principle can not be guaranteed.