Every number on the box, decoded
IPX5
An IPX number is a lab test, not a swimming license
- What it promises
- The product passed a specific, defined water test at the stated level.
- What it does not
- Protection against immersion, salt water, pressure, soap, or the same performance after a year of wear.
The IP code is published by the IEC, and it has two digits. The first is solid particle protection, the second is water. When you see IPX5, the X means the first digit was not tested or not claimed, and 5 means it passed the water jet test at that level.
Each level is a different test, not a scale of general toughness. Level 4 is splashing from any direction. Level 5 is a jet of water from a nozzle. Level 6 is a more powerful jet. Level 7 is immersion to a defined depth for a defined time. A product at level 5 has not been tested for immersion at all, which is why IPX5 earbuds and swimming do not belong in the same sentence.
These tests use clean fresh water under controlled conditions. Salt water, chlorinated pool water, soap, and pressurized shower spray are outside the scope of every one of them. So is age: seals compress, adhesives fatigue, and a rating earned by a new product is not a promise about the same product two years later.
The other thing to watch for is a listing that says "water resistant" with no number at all. That phrasing maps to no test and no standard. One pair of earbuds in this catalog states IPX5 and another states only that it is water resistant, and the difference between those two sentences is the difference between a claim you can check and a claim you cannot.
The practical reading: an IPX rating is about rain, sweat, and being caught out. It is not about deliberate submersion, and no rating here should change your behavior around water.
On the box → what it means
| The box says | Which actually means |
|---|---|
| IPX4 | Passed a splashing test from any direction. Rain and sweat, nothing more. |
| IPX5 | Passed a water jet test from a nozzle. Immersion was never part of the test. |
| IPX7 | Passed immersion to a defined depth for a defined time, in clean fresh water. |
| The "X" in IPX | The solid particle digit was not tested or not claimed. It is a blank, not a zero. |
| "Water resistant" | No standard, no test, no level. A phrase rather than a rating. |
Where this number misleads
- IPX5 is read as swim-safe. Level 5 is a jet test; immersion is a different test at a different level.
- The X is read as a zero, implying the product failed dust protection. It means the digit was not claimed at all.
- A rating from launch day is treated as permanent. Seals age, and no manufacturer warrants a rating for the life of the product.
- Pool and sea water are assumed to be covered. Every one of these tests uses clean fresh water.
Listings where this number shows up
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TAGRY Wireless Earbuds
The listing states: 60 hours total playback, an LED power display, a wireless charging case, and IPX5.
View on AmazonApple AirPods Pro 3
The listing states: Active noise cancellation, spatial audio, USB-C charging, and it also mentions live translation, heart rate sensing and a hearing aid feature. Every one of those is a claim in the listing and nothing more.
View on Amazon
Related specs
Where it applies
- Headphones & EarbudsThe job: audio that pairs, lasts, and survives a pocket.
Sources
Links to Amazon on this page are affiliate links, and a qualifying purchase may earn this site a commission at no extra cost to you. It changes nothing about what is written here: no prices, no ratings, and no claims of our own testing. Affiliate Disclosure.