How much is 5 ATM?
Water resistance is a key factor contributing to the durability and functionality of watches. The designation "5 ATM" often appears in the description of watches, but what does it exactly mean, and how does it impact a watch's ability to withstand water?
What Does "ATM" Mean?
"ATM" stands for "atmospheres" and is a unit of pressure that expresses the water resistance of watches. 1 ATM corresponds to the pressure at sea level, approximately equal to 10 meters. So, when you see the designation "5 ATM" on a watch, it means it is resistant to water pressure up to a depth of 50 meters.
Different Levels of Water Resistance:
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1 ATM (10 meters): Watches with this level of water resistance are resistant to splashes but not suitable for immersion.
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3 ATM (30 meters): Typically, watches with this water resistance can withstand short periods of immersion, such as handwashing or being worn in the rain.
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5 ATM (50 meters): Watches with this level of water resistance are suitable for swimming and everyday water activities but not for diving into greater depths.
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10 ATM (100 meters): Watches at this level are usually suitable for diving into greater depths and water sports.
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20 ATM (200 meters) and beyond: Watches with this designation are suitable for professional diving and extreme water conditions.
What Does It Mean for Using Watches in Water?
While watches with a 5 ATM designation are suitable for swimming and water activities, it is not advisable to use them for diving into greater depths or with scuba diving equipment. The pressure underwater increases, and watches could be exposed to more pressure than they are designed to withstand.
Measures to Maintain Water Resistance:
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Check Seals Regularly: Regularly check the condition of seals, and if damaged or worn, have them replaced.
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Careful Crown Operation: Be careful when opening the crown or case for time or date adjustment to prevent water entry.
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Avoid Hot Showers and Saunas: Exposure to high temperatures in showers or saunas can affect the seals and water resistance.
Conclusion:
The "5 ATM" designation on watches provides users with valuable information about the level of water resistance and the depth to which the watch can withstand water pressure. However, it's important to be aware that water resistance is not a static feature, and users should adhere to recommended precautions and limitations to ensure the long life and reliability of their water-resistant watches.
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