What Does 200m Water Resistant Mean?

One of the information that you need to learn before purchasing a watch is the water resistance of the product.

Have you ever wondered “What does 200m water resistant mean?”?

This information is often recorded on the watch sales page such as “Water resistant: 200m”, 20 Bar or 20 atm, converted as follows: 1 Bar = 10m = 1 atm.

These parameters are mostly understood by most of the customers as watches can be used underwater when down to a depth of 200m.

In fact, this understanding is not entirely true.

So how do you know what this parameter means?

Let’s dig a little deeper.

Firstly, this specification comes with the watch are tested in standard conditions, in a laboratory with environmental simulations, and that leads to the big gap of the parameters when in actual use.

For example, a fashion watch that records waterproof parameters of 20m or 30m does not mean you can take it to swim in the depths written on the clock, or even wear it to swim in the deep pool up to 2m.

That 20m or 30m parameter is just a simulation in the laboratory, and that is the limit point or the dead point of the watch.

For a better understanding, please refer to the following table to see what kind of watch you have and which activities you can take it with you to use.

There are seven water-resistant levels of the watch divided by the parameters recorded on the back of each watch.

Let’s explore the water-resistant levels from low to high

Can not be waterproof

It is the lowest level, your watch is nearly unable to withstand water or is only able to withstand a very short time in rain or hand washing conditions.

This parameter is often recorded on the type of watch, or poor quality watches to dazzle consumers (only write “Water Resistant” or “WR” without including numbers and units).

If you do not find any signs of water resistance parameters (do not write “Water Resistance”, “WR” or 30m, 50m, 100m…) on the case or dial of the watch, be careful. Your watch doesn’t like water or hates water a lot.

Therefore, you absolutely do not let them come into direct contact with water, or they will be damaged immediately.

Water resistant to 30m (3 atm or 3 Bar)

This type is better than the non-waterproof one, usually appearing on the cheap or fashion watches. These types can help users to go to the rain, wash their hands, and take a comfortable bath without worrying about the clock being killed by water.

However, if immersed in water for too long like swimming, the chances of your watch being potentially damaged are quite high.

Water resistant to 50m (5 atm or 5 Bar)

At this level of water resistance, you can bring your watch to swim freely, but should also limit to too deep water because the more you contact with the water, the rubber gaskets gradually lose their ability and your watch will also reduce durability.

Watch with 5 Bar of water resistant

Water resistant up to 100m (10 atm or 10 Bar)

It is a common parameter in high-quality watches. With this level of water resistance, you can totally go swimming, go diving at a level not too deep without facing any problem.

Water resistant up to 200m (20 atm or 20 Bar)

It is a common parameter that appears on all kinds of diver watches (specialised watches for diving activities).

With a waterproof meter of 200m, you can completely dive at depths of less than 10 m in the water for a long time, and it may be suitable for you who have a hobby of diving at moderate depths.

Water resistant up to 300m (30 atm or 30 Bar)

Similar to the 200m level, but the watch created with stronger water resistance, and you can dive at higher depths.

The waterproof ability of Diver or ISO 6425

It is the highest level of watch water resistance. With this level of water resistance, you can do whatever you like without worrying about the clock being watered.

These parameters usually appear only on professional diving watches with a higher price.

Some critical notes when using water-resistant watches

Although there is specific water resistance, you still need to keep in mind some of the following points to make your watch work best:

  • Ordinary people can only dive up to 35m. Very few people can dive as deep as 100m. All of us usually dive just a few meters or deliberately dive about 10m. You should buy water resistant watches at this level.
  • When using a watch under the water, you avoid using the knob and determine that they are fully tightened. Most of the water comes in from the knob. Do not use the knob and button when the watch is wet or in contact with water.
  • After swimming or wash your hands, you need to clean the watch with clean water and dry it. And if you go to the sea, you need to clean your watch right away to avoid seawater corrosion.

  • You have to use your watch for the right purposes, avoid wearing it in the sauna room or the hot water or the environment with the high temperature.
  • The thinner the watch, the less water resistant it is, notices this criterion if you want to have a perfect waterproof watch.
  • Remember that 200m at a diving watch is not the same as 200m at a regular watch. It has better water resistant due to its specific characteristics.
  • Do not let cold air flow of air conditioner units blow directly into the clock.
  • Please use the watch correctly with its water resistance.

In short, read the water resistance of the watch carefully before using

Now you can understand clearly the meaning of 200m water resistant written in your watch.

In addition to referring to our article, you can ask for additional information from the seller or manufacturer to be able to use the watch correctly and for a long time.

And here’s something really interesting for you. If someone sells you a waterproof watch that is 10,000m deep, don’t be foolish and trust this. There is never a type of watch that is such deep water and certainly a fake product.

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