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In case you’re trying to purchase a brand new smartwatch, health tracker or one other wearable, you’ve most likely come throughout the time period ‘ATM’ as a approach of expressing water resistance.
Right here’s all the pieces you could learn about ATM, together with what every quantity means and the way it differs from an IP ranking.
What’s ATM water resistance?
ATM is a water resistance measurement generally featured on each smartwatches and conventional watches.
The time period ‘ATM’ is an abbreviated model of the phrase ‘environment’ and is used to explain the quantity of strain a tool can stand up to underwater.
The precise quantity of strain a tool can deal with is often decided in laboratory circumstances, with numbers like 1 ATM, 3 ATM and 5 ATM used to convey precisely how water-resistant it’s. Usually talking, 10m of depth is the same as 1 environment of strain (or ATM). The upper the quantity, the extra strain the product can stand up to underwater.
The definitions and check circumstances for every ATM classification are formally decided by the Worldwide Organisation for Standardisation in ISO 22810.
You possibly can see Samsung’s abstract of the classifications under:
Picture: Samsung
What’s the distinction between ATM and an IP ranking?
In case you’ve ever regarded into the water resistance of a smartphone or pair of earbuds, you might be acquainted with the time period ‘IP’. Loads of flagship telephones carry an IP ranking of IP68 lately, for instance.
So, what’s the distinction between IP and ATM?
Like ATM, an IP ranking is a approach of classifying precisely how water-resistant a tool is. IP stands for Ingress Safety.
An IP ranking is split into two numbers – the primary refers to how protected that system is in opposition to strong objects (like mud and dust), whereas the second quantity appears to be like at how properly the system can stand up to liquids (like water and sweat).
This may lead you to imagine that IP scores are the identical as ATM classifications with the addition of solids. Nonetheless, this isn’t true in any respect.
IP scores don’t actually account for water strain, which is why an ATM ranking is a greater technique to decide whether or not a tool is secure to take swimming, snorkelling or diving.
That is additionally why you’re extra prone to see the time period ATM on the spec sheet of a smartwatch or health tracker than you’re one thing not designed to resist massive quantities of water strain, like a smartphone.
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