A smartwatch is water-resistant under specific test conditions, and the rating that suits you depends on whether you need splash protection or full swimming use.
The term “smartwatch waterproof rating” actually covers two separate systems — IP and ATM — that measure different things. One is standardized for dust and short immersion, the other for static pressure. Figuring out which one matters for your swimming, showering, or water-sports plans comes down to a few numbers on the case back.
What IP And ATM Ratings Actually Mean
IP and ATM ratings are not interchangeable. They use different test methods, and knowing which system your watch uses tells you what it survived in a lab.
IP stands for Ingress Protection. These are the two you’ll see on most Android and budget smartwatches:
- IP67 — dust-tight and protected against brief immersion, typically shallow and short, not swimming.
- IP68 — dust-tight and protected against continuous immersion under manufacturer-defined conditions, often cited as roughly 1.5 meters for up to 30 minutes, but depth and time vary by brand.
ATM ratings measure static water pressure, not length of use. On a smartwatch display or case back, that translates into general categories:
- 3 ATM / 30m — splash and rain resistant, generally not recommended for swimming.
- 5 ATM / 50m — the practical baseline for recreational swimming, showering, and surface water sports, but not diving.
- 10 ATM / 100m — built for stronger water sports like surfing, jet skiing, and snorkeling.
Is IP68 Good Enough For Swimming?
That means one IP68 watch might survive a pool swim while another dies in the same session, depending on how the maker defined “continuous immersion” for that model. For swimming, 5 ATM is the safer, more practical standard because it explicitly covers extended water contact and motion.
The critical distinction is that ATM ratings are measured as static pressure, so the “50 meters” on a 5 ATM watch does not mean you can dive to 50 meters. Samsung’s guide points out that these ratings refer to lab test pressure, not actual usable depth limits.
Ratings That Cover Water Sports
If you’re surfing, jet skiing, or snorkeling, you need a 10 ATM rating because the dynamic pressure of moving water exceeds what 5 ATM can guarantee.
Here is the general breakdown by activity level to keep it straight:
| Rating | Best For | Not For |
|---|---|---|
| IP67 | Splashes, rain, hand washing | Submersion, swimming |
| IP68 | Short accidental drops in water | Guaranteed swim use, high motion |
| 3 ATM | Everyday wear, sweating | Showers or swimming per most guides |
| 5 ATM | Swimming, showering, surface water | Scuba diving, high-speed water sports |
| 10 ATM | Surfing, snorkeling, jet skiing | Deep freediving or scuba |
What Can Void Or Weaken A Water Resistance Rating
A few situations that commonly break ratings, even on a 5 ATM watch:
The rating applies to the specific model, not the brand overall, so check the case back or the product support page for the exact IP or ATM rating and any listed exclusions. If you’re actively shopping and want a tested shortlist of options that handle water exposure without issues, our roundup of the best waterproof Android smartwatches is a solid place to start.
FAQs
Can I shower with a 5 ATM smartwatch?
Why do manufacturers say “50 meters” if I cannot dive to 50 meters?
Is a higher IP rating always safer for water?
References & Sources
- Tom’s Guide. “Smartwatch water resistance ratings explained: IP and ATM.” Details what each IP rating digit means for dust and water exposure.
- Wareable. “Smartwatch IP ratings and ATM water resistance: A guide.” Explains static pressure testing and how “meters” translate to lab conditions.
- Samsung Newsroom. “These water resistance ratings will help you find out.” Breaks down which ratings suit swimming versus higher-pressure water sports.