What Does IP68 Mean? Smartwatch Water Resistance Explained

What the IP68 rating means

IP is short for Ingress Protection, a two-digit code defined by an international standard that classifies how well a device resists solids and liquids. The first digit describes protection against solid particles, from 0 (no protection) to 6 (dust-tight). The second digit describes protection against water, from 0 (no protection) up to 8 (continuous immersion).

An IP68 smartwatch has the highest possible dust rating (6) and the second-highest water rating (8). The numeric suffix after IP is not a fixed set of conditions but a range that the maker must specify. In practice, most smartwatch makers that quote IP68 also state a maximum depth and duration, such as 1.5 meters for 30 minutes, though some go deeper.

The key point for a buyer: IP68 does not automatically mean you can go deep-sea diving or wear the watch in a hot shower. It means the maker designed it to survive dust and a stated level of immersion, and you should look for that stated condition before trusting it in water.

How IP68 compares to other ratings

The most common ratings you will see on smartwatches are IP67, IP68, and 5ATM. IP67 means dust-tight and protection against immersion up to 1 meter for 30 minutes. IP68 takes that further: the maker specifies a depth greater than 1 meter. Many fitness-oriented smartwatches use IP68 and quote depths from 1.5 to 5 meters, sometimes more.

5ATM is a different scale that measures static water pressure equivalent to 50 meters depth. The two scales are not directly comparable because each is tested under its own conditions. A 5ATM watch is usually suitable for swimming, and an IP68 watch may or may not be, depending on the maker's stated depth.

For everyday wear, rain, handwashing, and occasional splashes, both IP67 and IP68 are comfortable. For swimming laps, choose a watch that explicitly says it is suitable for swimming, whether it carries IP68 or 5ATM. For diving, you need a watch rated beyond the standard consumer scales.

What you can do with an IP68 smartwatch

With an IP68 smartwatch, you can keep it on your wrist while washing your hands, in the rain, or when you get caught in a sudden downpour. It can also handle sweat during a hard workout, since sweat is a liquid and the dust seal that keeps particles out also keeps moisture out.

Many IP68 smartwatches are also suitable for swimming in a pool or the sea, but you should verify the maker's own statement for depth and duration. For trusted brands, see our list of certified brand smartwatches. If a spec sheet says IP68 and adds a depth figure, follow that figure. If no depth is given, treat the watch as splash-proof for light swimming at your own risk.

A few cautions apply to every water-resistant watch: avoid pressing buttons underwater, avoid salt water unless stated, and dry the watch after swimming. Water resistance degrades over time as seals age, so a watch that was fine when new may not be as reliable after years of use.

Why the rating matters for a smartwatch

A smartwatch is a small computer strapped to your wrist, exposed to rain, sweat, handwashing, and the occasional knock against a wall. A solid IP rating is the main difference between a wearable that survives everyday life and one that dies from a few drops of water. The rating is not a style feature; it is a basic reliability spec.

If you run outdoors, swim, work with your hands, or simply live in a rainy climate, an IP68 watch gives you peace of mind that you do not need to remove the device before washing up or stepping outside. For kids' watches too, a solid rating is useful since children are less careful around water and dirt.

The rating matters most when you are choosing between models that otherwise look similar on paper. Two watches may have identical screens and processors; the one with an honest IP68 rating is the one you can wear without thinking twice.

How to read the spec sheet

When you look at a smartwatch spec sheet, find the line that says Water Resistance or IP Rating. If it says IP68, look for a second number or phrase such as 1.5m or 3m. That figure is the depth the maker actually tested, and it is the number that should guide your decisions about swimming and diving.

Makers sometimes list IP rating without a depth. In that case, the watch meets the minimum for IP68, which is immersion beyond 1 meter for a stated time, but you do not know the upper limit. Treat such a watch as suitable for rain and splashes, and check with the maker before swimming.

Also compare the rating to how you plan to use the watch. A swimmer might prefer a GPS smartwatch for swimming, while a desk worker who only wants rain protection is fine with a basic IP68. Knowing your own use case makes the number on the spec sheet meaningful.

Limitations and best practice

IP68 is not a permanent guarantee. The rating applies to a new device in a lab under controlled conditions. In the real world, a drop can crack the seal, a dusty environment can clog the speaker grilles, and the adhesive that holds the case together can weaken over time. Think of the rating as a baseline, not a promise.

To keep your IP68 watch in good shape, rinse it with fresh water after it comes into contact with salt water or chlorine, dry it before charging, and avoid steaming hot showers or saunas where the heat can stress the seals. If the watch has a removable band, check that the attachment area is clean.

For rugged outdoor use beyond swimming, some watches add MIL-STD-810 testing or a higher water rating such as 10ATM. If you work in construction, hike in harsh weather, or dive, consider a watch that combines IP68 or better with an impact standard. See our guide to rugged or military smartwatches and rugged GPS smartwatches for those options.

What to pick for your use

Questions

Is IP68 good enough for swimming?

Yes, for most casual swimming. IP68 means the watch can be immersed beyond 1 meter under conditions the maker specifies. Many IP68 smartwatches are explicitly rated for swimming in pools and the sea. Check the depth figure on the spec sheet, and if the maker says swimming is fine, you can trust it for regular swim sessions. For a selection of swim-friendly models, see our GPS smartwatches guide.

Can I shower with an IP68 smartwatch?

It depends on the maker's statement. Hot water and steam can stress the seals beyond what the IP test covers, so a watch that survives a pool may not survive a hot shower. If you want to wear a watch in the shower, look for a maker that explicitly says so, and even then keep the water temperature moderate.

What is the difference between IP67 and IP68?

Both are dust-tight, but IP68 requires immersion beyond 1 meter, while IP67 is only tested to 1 meter for 30 minutes. In practice, IP68 is a stronger claim and is the more common rating on modern smartwatches. For everyday splashes and rain, the two are equal; for swimming, IP68 gives more margin.

Does IP68 mean the watch is waterproof?

No. Waterproof is a misleading term that no standard uses. IP68 means the watch resists water under specified test conditions, not that it is immune to damage. Water resistance can degrade over time, and extreme conditions such as high-pressure jets or deep diving can exceed the rating. Always follow the maker's depth and usage guidance.

How long does IP68 protection last?

There is no fixed lifespan. Seals and adhesives degrade with wear, temperature changes, and accidental impacts. A watch that was rated IP68 when new may be less resistant after a few years. To extend the life of the seals, avoid unnecessary exposure to water, rinse after salt or chlorinated water, and replace the watch if you notice the case separating or the speaker muffling.