Anyone who has bought a watch has probably seen watches with the water-resistant brand stamped on the back of the watch. The mark is to indicate how deep that watch can take in the water and to some extent how long. All watches with a waterproof brand have passed the leak test. It is a pressure test where the bars equal to the depth in meters are read. Even if a watch has the water-resistance mark, it does not mean that it has been designed for prolonged use underwater. Let’s explain this a little more before analyzing what to look for when buying water-resistance watches. Let’s consider you are going to buy Casio LTP-E106RG-9A from Casio online showroom.
The first thing you will notice will be the 30-meter water resistance mentioned on the back of the Casio watch. The water resistance that is measured for 30 meters means that it cannot withstand great pressure. If it reaches the 30-meter mark, the clock could break. If you carry the watch underwater repeatedly and up to 20 meters, it will eventually stop working. Water-resistance is usually intended for someone to know that their watch is safe if it falls into the water, it rains a little or even accidentally swims in a pool. In total, water resistance is not for swimming every day.
Those who dive have a different appearance in the words waterproof and waterproof. Waterproof is a term that generally does not apply to watches, but is suitable when talking about diving watches. Dive watches were designed for repeated use in the water. They have special designs to make sure they are protected against water. The first is the seal. There is a seal in place, such as a small O-ring or seal. This helps block water but does not protect it completely. A sealant or lubricant is added into the water around the edge. This sealant hardens and ensures that the internal operation of the watch is safe against water. Despite all the seals in place, a dive watch can become susceptible to water.
Dive watches will eventually be affected by pressure and temperature. These stressors combined with the aging of the seals means that the watch must undergo maintenance to reform a good seal. Dive watches are also rated for deeper depths, as divers like to visit 100 feet. Anyone wishing to swim with a watch would be better with a dive watch over the typical sports watch because they are designed to dive into the water.
Now that you understand water resistance, you can concentrate on what to look for when buying a watch. If you do not intend to swim with a watch or dive, it will be fine with your standard water resistance brand. Any watch that has a water resistance of up to 200 meters is not suitable for diving. For divers, you should look at the minimum ISO of 6425 for a depth of 100 meters. Any watch that says it is resistant to splashes and rain is not a watch for swimming or diving. Those with 100 to 200 meters can be used for swimming and even surfing, but not for diving.
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