When buying a smartwatch, one of the most overlooked specifications is its Water Resistance rating. Terms like IP68, 5ATM, and 10ATM often appear on product pages, but many buyers assume they all offer the same level of protection. In reality, each rating is designed for different types of water exposure.
If you plan to wear your smartwatch while washing your hands, swimming, or even during water sports, understanding these ratings can help you choose a watch that suits your lifestyle.
In this guide, we’ll explain the differences between IP68, 5ATM, and 10ATM water resistance and help you decide which one is right for you.
What Does Water Resistance Mean?
Water resistance indicates how well a smartwatch can withstand exposure to water under specific testing conditions. However, it does not mean a smartwatch is completely waterproof.
Manufacturers test devices using internationally recognized standards, but real-world conditions such as water pressure, temperature changes, soap, saltwater, and impact can affect a watch’s water resistance over time.
What Is IP68 Water Resistance?
IP68 is part of the Ingress Protection (IP) rating system.
- IP stands for Ingress Protection.
- The first digit (6) means the device is completely protected against dust.
- The second digit (8) indicates protection against continuous immersion in fresh water under manufacturer-specified conditions.
Best For
- Washing hands
- Rain
- Sweat
- Everyday use
- Accidental drops in water
Not Ideal For
- Swimming for long periods
- High-pressure water jets
- Diving
- Water sports
Many affordable smartwatches in the ₹2,000–₹6,000 range offer IP68 protection, making it suitable for everyday users.
What Does 5ATM Mean?
ATM stands for Atmospheres, a unit used to measure water pressure.
A 5ATM-rated smartwatch is tested to withstand pressure equivalent to 50 meters of static water depth in laboratory conditions.
That doesn’t mean you can safely dive 50 meters underwater. Instead, it indicates the watch can handle greater water pressure than an IP68-rated device.
Suitable For
- Showering
- Swimming in a pool
- Swimming in open water
- Rain
- Daily workouts
Avoid
- Scuba diving
- High-speed water sports
- Deep-water diving
For most users, 5ATM provides the ideal balance between durability and affordability.
What Does 10ATM Mean?
A smartwatch with a 10ATM rating is designed to withstand pressure equivalent to 100 meters of static water.
These watches are generally built for outdoor enthusiasts, athletes, and adventure users who regularly participate in water-based activities.
Suitable For
- Swimming
- Snorkeling
- Surfing
- Kayaking
- Water sports
- Outdoor adventures
Still Not Recommended For
- Professional scuba diving
- Saturation diving
- Hot water exposure
Many premium fitness watches from brands like Garmin, Amazfit, and Suunto feature a 10ATM water resistance rating.
IP68 vs 5ATM vs 10ATM: Quick Comparison
| Feature | IP68 | 5ATM | 10ATM |
|---|---|---|---|
| Dust Protection | Yes | Varies | Varies |
| Rain & Sweat | ✔ | ✔ | ✔ |
| Hand Washing | ✔ | ✔ | ✔ |
| Shower | Limited | ✔ | ✔ |
| Swimming | Not Recommended | ✔ | ✔ |
| Open Water Swimming | Limited | ✔ | ✔ |
| Water Sports | ✘ | Limited | ✔ |
| Snorkeling | ✘ | Limited | ✔ |
| Diving | ✘ | ✘ | Limited recreational use only |
Which Rating Should You Choose?
Choose IP68 If…
An IP68 smartwatch is sufficient if you:
- Mainly use your smartwatch indoors.
- Wear it during workouts.
- Need protection from sweat and rain.
- Occasionally wash your hands while wearing it.
- Want an affordable smartwatch.
Choose 5ATM If…
A 5ATM smartwatch is the best option if you:
- Swim regularly.
- Want to wear your watch in the shower.
- Exercise outdoors in all weather conditions.
- Need better water protection without spending a premium.
For most buyers, 5ATM offers the best value.
Choose 10ATM If…
A 10ATM smartwatch is worth considering if you:
- Frequently participate in water sports.
- Swim in lakes or the ocean.
- Enjoy kayaking, paddleboarding, or surfing.
- Need maximum durability for outdoor adventures.
Can You Swim With an IP68 Smartwatch?
Although some manufacturers claim their IP68 devices can survive short periods in water, IP68 certification is primarily intended for accidental immersion rather than regular swimming.
Repeated exposure to swimming pools, especially chlorinated water, can gradually reduce the effectiveness of seals over time.
If swimming is part of your routine, choosing a smartwatch with at least a 5ATM rating is the safer option.
Does Water Resistance Wear Out Over Time?
Yes. Water resistance is not permanent.
Factors that can reduce protection include:
- Drops and impacts
- Exposure to soap or shampoo
- Saltwater
- Hot water
- Steam rooms
- Aging rubber seals
Even a 10ATM smartwatch should be rinsed with fresh water after exposure to seawater and inspected if it suffers a significant impact.
Tips to Protect Your Smartwatch
To keep your smartwatch in good condition:
- Rinse it with fresh water after swimming in the sea.
- Avoid pressing physical buttons underwater unless the manufacturer specifically allows it.
- Remove the watch before entering a sauna or hot tub.
- Clean and dry the charging contacts before charging.
- Follow the manufacturer’s care instructions for long-term durability.
Final Verdict
Choosing the right water resistance rating depends on how you plan to use your smartwatch.
If you only need protection against rain, sweat, and occasional splashes, an IP68 smartwatch is usually enough.
For users who swim regularly or want extra peace of mind during daily activities, 5ATM is the best all-round choice and offers the ideal balance between protection and price.
If you’re an outdoor enthusiast, swimmer, or water sports lover, investing in a 10ATM smartwatch provides greater durability and confidence in demanding conditions.
Ultimately, don’t choose a smartwatch based solely on the highest water resistance rating. Consider your lifestyle, fitness routine, and budget to find the model that best meets your needs.
Frequently Asked Questions
Is IP68 better than 5ATM?
Not necessarily. IP68 is excellent for dust protection and accidental water exposure, while 5ATM is specifically designed to withstand the higher water pressure encountered during swimming. For swimmers, 5ATM is generally the better choice.
Can I shower with an IP68 smartwatch?
It’s best to avoid showering with an IP68-rated smartwatch unless the manufacturer explicitly states it’s safe. Soap, shampoo, and hot water can degrade water-resistant seals over time.
Is 10ATM overkill for everyday use?
For most users, yes. Unless you regularly swim, snorkel, or participate in water sports, a 5ATM-rated smartwatch typically provides all the protection you’ll need.
Are water-resistant smartwatches waterproof?
No. Water-resistant means the watch can withstand water exposure under specific conditions, while waterproof implies complete protection against water, which consumer smartwatches do not offer.