The ATM standard, also known as ISO 22810, is an international standard that defines the water resistance rating of wristwatches. It provides a clear indication of the level of water resistance a watch can withstand under specific conditions. This table summarizes our general user guidelines in regards to the ATM rating of our watches.

 

 

 

More on the ATM standard and its key aspects:

ISO 22810:2010
Horology — Water-resistant watches

The ISO 22810 standard classifies watches into different water resistance levels, measured in atmospheres. Each ATM represents the static water pressure the watch can endure without compromising its functionality. It's important to note that the water resistance rating applies to still water and not to activities like diving or swimming.

The standard includes various levels of water resistance, typically ranging from 3 ATM to 20 ATM or more. A 3 ATM rating means the watch is resistant to accidental splashes or brief immersions in water. It is not suitable for swimming or prolonged exposure to water. As the rating increases, so does the watch's ability to withstand water pressure.

To meet the ISO 22810 standard, watches undergo rigorous testing procedures. These tests involve subjecting the watches to different water pressure levels and ensuring they maintain their functionality and integrity. The tests may also include evaluating the watch's resistance to temperature changes, humidity, and saltwater exposure.

It's important to understand that the ATM rating does not guarantee absolute water resistance in all conditions. Factors like sudden movements, temperature changes, and aging of seals may affect a watch's water resistance over time. It is advisable to follow the manufacturer's recommendations and take proper care of the watch to maintain its water resistance capabilities.

In summary, the ISO 22810 standard provides a reliable guideline for assessing the water resistance of wristwatches. It allows consumers to make informed choices based on the intended usage and level of water exposure. Adhering to the ATM rating ensures that the watch can withstand water-related activities within its specified limitations, giving users peace of mind and confidence in their timepiece's durability.