What is the WR, BAR, ATM waterproof rating of the watch? What do they mean?

How about this watch when you take it to swim, go in the rain, take it in the shower,… how about it? These are frequently asked questions when buying a watch. The following article will show you how to check the waterproof index of your watch, and specify the cases where you should and shouldn’t wear a watch.

What is the waterproof rating of the watch?

Water Resistance (WR) indicates the watch’s ability to stay in contact with water , and is measured in ideal laboratory conditions under water pressure at a certain depth.

The symbols indicating the water resistance index on the watch:

• WR: In some watch brands, manufacturers use the symbol WR instead of the water resistance index and are measured in meters. For example, the WR 30 is equivalent to water pressure resistance to a depth of 30 meters.
• BAR: This is a measure of water pressure common in Europe, and originated in England. 1 BAR means that the watch will withstand water pressure at a depth of 10 meters and still be operable.
• ATM: This is also a common measure of water pressure. 1 ATM is approximately equal to 1 BAR and withstands a depth of about 10 meters.

These values will usually be indicated directly on the face or case of the watch . If you do not see any signs of water resistance, then of course, you cannot use the watch in conditions of contact with water such as: in the rain, going to the beach, or bathing, …

The scale shows the meaning of the water resistance index

As mentioned, the above indicators are measured purely under ideal laboratory conditions . However, in reality, the water resistance of a watch depends on many other factors , and never reaches an absolute value.

The scale of the waterproof index below, will help you better understand the meaning of each index interval , more specifically in which cases should and should not be used.

Therefore, understanding the watch’s ability to come into contact with water helps the process of using and preserving the watch more effectively.

But rest assured, most watches currently on the market have a certain level of water resistance, so you don’t need to worry about washing your hands or it’s raining!

Hopefully with this article, you know how to choose the right waterproof watch for your needs. If you have any questions, please comment below!