Water is a persistent substance that will make its way through every opening. This is dangerous when it comes to watches as the insides can get corroded to the point that the watch can no longer function. Manufacturers have stepped up by improving the water resistant watches of their products. These come in varying degrees. Samples are tested in laboratories to determine the amount of pressure that they can withstand before water gets its way. Specific ratings are given depending on the results. These are important for people who are always exposed to moisture such as runners, cyclists, swimmers, divers, and outdoor workers. Below are some of the ratings of water resistant watches and their meanings:
3 ATM or 30m
This indicates that the watch is good enough for everyday use. Wearers do not have to worry if the device gets splash on. It’s okay to have a brief exposure in the rain. On the other hand, it should not be used for bathing, swimming, fishing, and diving. The water is likely to damage the internal parts eventually.
5 ATM or 50m
The device should be at this level for you to use it in the shower with confidence. It should also be enough for swimming in shallow water and some snorkeling. However, it should not be taken on diving expeditions as that is probably too much for the watch. Make it a point to honor the limits of the product.
10 ATM or 100m
This rating is still not recommended for diving but it is more than enough for swimming, sailing, snorkeling, and recreational surfing. You can also engage in various water sports without having to take off the watch.
20 ATM or 200m
Watches with this rating can be used for skin diving which usually involves shallow depths. There is no need to take major equipment such as oxygen tanks because divers rely on their breath. They go up to the surface when they need to. At this resistance level, the watch is good enough for professional marine activities and serious water sports.
Diver’s 100m, 200m, 300m, and 300m+
Diver’s 100m is the minimum rating for scuba diving watches. However, it is much better to use devices with 200m and 300m for peace of mind. The 300m+ designation is best for saturation diving.
Whatever your purpose for getting a watch, make sure that it has a suitable water resistance rating.
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