When purchasing a watch, one of the essential features to consider is its water resistance. Whether you need a timepiece for everyday wear, sports, or diving, understanding the water resistance rating of your watch can help you protect it from water damage and extend its lifespan. In this guide, we’ll break down what water resistance means, how to interpret ratings, and best practices for maintaining your watch.
What Does Water Resistance Mean?
Water resistance in watches refers to the watch’s ability to withstand moisture and water exposure under specific conditions. However, it does not mean a watch is entirely waterproof. The level of resistance is measured in meters (m), atmospheres (ATM), or bars, each indicating the pressure the watch can handle.
Understanding Water Resistance Ratings
Different watches have varying levels of water resistance. Here’s a breakdown of common ratings and what they mean:
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30m (3 ATM/3 Bar) – Splash-resistant; suitable for everyday use, but not recommended for swimming or submersion.
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50m (5 ATM/5 Bar) – Can handle light swimming but not suitable for prolonged water exposure or high-pressure activities.
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100m (10 ATM/10 Bar) – Suitable for swimming, snorkeling, and surface water sports, but not for diving.
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200m (20 ATM/20 Bar) – Can be used for recreational scuba diving and high-impact water activities.
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300m+ (30 ATM/30 Bar and above) – Designed for professional diving and deep-sea exploration.