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There is no permanently waterproof smartwatch. For regular pool or surface swimming, choose a model with an explicit swim rating of at least 5 ATM or 50 meters. For snorkeling, rougher water, and high-speed water sports, 10 ATM is the safer category. For scuba diving or freediving, choose a watch with a specific dive rating and depth certification—not merely an IP68 label.
For most outdoor athletes, the Garmin fēnix 8 is the best all-round swimming and water-sports watch. It combines a 10 ATM rating, dive mode, multisport training, underwater heart-rate support, and much longer battery life than mainstream Apple, Google, and Wear OS watches. The Apple Watch Ultra 3 is the better choice for iPhone owners who want a full-featured smartwatch and recreational diving capability. For serious swim and triathlon training, choose the Garmin Forerunner 970.
That recommendation changes considerably depending on your phone, whether you swim in a pool or open water, how much training data you need, and whether “swimming” actually means snorkeling or diving.
Quick verdict
| Reader need | Best choice | Why |
|---|---|---|
| Best overall for swimming and water sports | Garmin fēnix 8 | 10 ATM water rating, dive mode, multisport support, long battery life, and rugged construction. |
| Best smartwatch for iPhone | Apple Watch Ultra 3 | Excellent iPhone integration, pool and open-water tracking, cellular connectivity, 100-meter water resistance, and recreational scuba capability to 40 meters. |
| Best Apple value | Apple Watch SE 3 | Core pool and open-water swim metrics at a much lower starting price than the Ultra 3. |
| Best serious swim and triathlon trainer | Garmin Forerunner 970 | Deep swim metrics, structured workouts, multisport and triathlon modes, and up to 15 days of smartwatch battery life. |
| Best rugged Android water watch | Samsung Galaxy Watch Ultra2 | 10 ATM, IP69K, EN13319 certification, and dive data including depth and water temperature to 40 meters. |
| Best Pixel ecosystem watch | Google Pixel Watch 4 | Good pool tracking and the strongest Google integration, but limited official open-water metrics. |
| Best budget cross-platform watch | Amazfit Active 2 | 5 ATM, pool and open-water modes, more than 160 sports modes, and up to 10 days of typical battery life. |
| Best swim specialist | Garmin Swim 2 | Swim-first features such as drill logging, Critical Swim Speed, pacing alerts, auto-rest, SWOLF, and underwater heart rate. |
| Best long-battery lifestyle watch | Garmin Venu 4 | Swim-ready design, health features, calls, music, payments, and up to 12 days of smartwatch battery life. |
Prices and product availability vary by country. US prices mentioned below were checked against the supplied manufacturer pages on August 9, 2026, unless identified as a launch MSRP or reviewer estimate.
First, decide what “swimming” means for you
A watch suitable for a few pool lengths is not automatically suitable for ocean swimming, surfing, freediving, or scuba. Use this practical hierarchy:
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| Activity | What to look for |
|---|---|
| Rain, sweat, and splashes | A manufacturer water-resistance or ingress-protection rating. |
| Pool swimming and ordinary surface swimming | At least 5 ATM or an explicit manufacturer swim rating. |
| Snorkeling, jumping into water, and rougher surface conditions | 10 ATM or explicit manufacturer approval for the activity. |
| High-speed water sports | 10 ATM and confirmation that the manufacturer permits the specific activity. |
| Recreational scuba or freediving | A dive-capable model with a depth sensor, relevant certification, and a stated operating depth. |
If you only swim laps, paying for a dive-capable titanium watch may buy protection and battery life you will never use. Conversely, a 5 ATM fitness watch is not the right tool for repeated diving just because its specification says “50 meters.”
What water-resistance ratings really tell you
5 ATM or 5 bar
5 ATM represents pressure equivalent to approximately 50 meters of static water pressure. According to Garmin’s water-rating definitions, this category is generally intended for swimming and snorkeling. It does not mean that you can safely take the watch to a 50-meter depth.
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10 ATM or 10 bar
10 ATM represents approximately 100 meters of static pressure. It is a more appropriate baseline for frequent open-water use, snorkeling, jumping into water, and some high-speed water sports, provided the manufacturer explicitly permits the activity. It is still not, by itself, a complete scuba certification.
IP68 and IP69K
IP68 is an ingress-protection rating for dust and immersion. The exact depth and duration are defined by the manufacturer, so IP68 figures cannot be compared across brands without reading the product’s conditions. IP68 alone is not enough evidence that a watch is suitable for swimming.
IP69K indicates resistance to specified high-pressure, high-temperature water-jet testing. It can be useful on a rugged device such as the Galaxy Watch Ultra2, but it still does not replace a swimming or diving rating.
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ISO 22810:2010
ISO 22810:2010 covers water-resistant watches intended for ordinary daily use and swimming. ISO distinguishes ordinary water-resistant watches from diving watches; diving watches are covered by a separate standard. This is why an Apple Watch’s 50- or 100-meter statement should not be read as an unrestricted dive-depth promise.
EN13319
EN13319 is a standard for diving accessories, including depth gauges and combined depth/time devices. It is more relevant to a watch that advertises dive functions than a generic IP rating. However, EN13319 certification does not automatically make a smartwatch a complete substitute for a dedicated dive computer, dive training, or normal safety equipment.
Pool swimming versus open-water swimming
Pool swimmers should prioritize these features
- Pool-length selection.
- Automatic length and lap counting.
- Distance, pace, and elapsed time.
- Stroke-type detection.
- Stroke count and stroke rate.
- SWOLF or another efficiency metric.
- Rest and interval support.
- Custom pool workouts.
- Drill logging for kickboard, one-arm, sculling, and similar exercises.
- Water Lock or another control that prevents accidental screen taps.
- Underwater heart-rate recording, if you need heart-rate data during the swim.
Apple, Garmin, Samsung, Amazfit, and Google all provide some type of pool tracking, but their training depth differs. Garmin’s swim-focused devices are particularly strong for structured workouts, drill logging, pacing alerts, auto-rest, SWOLF, and Critical Swim Speed.
Open-water swimmers need more than running GPS
For open-water swimming, look for:
- GPS distance and route recording.
- Open-water pace and stroke-rate data.
- Fast satellite reacquisition when the wrist reaches the surface.
- Enough battery for long sessions.
- Water-temperature data if it matters to your training or safety.
- A reliable way to export or view the route after the swim.
A watch that records GPS well while running is not automatically a good open-water swim watch. Satellite signals do not travel normally through water, so the watch must estimate movement between surface appearances and reacquire useful positioning information as your wrist comes out of the water.
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The best water-resistant smartwatches
1. Garmin fēnix 8 — best overall for swimming and water sports
Best for: Outdoor athletes who swim, run, cycle, hike, train across multiple sports, or want a watch that can handle more demanding water use.
The fēnix 8 is the strongest overall choice when swimming is part of a broader outdoor-training lifestyle. It has a 10 ATM water rating, a dive mode, multisport support, and underwater heart-rate capability. TechRadar’s current tested swimming-watch listing gives it approximately 47 hours of GPS use and up to 16 days in smartwatch mode; actual endurance varies with display settings, GPS mode, sensors, and usage.
Its main advantage over ordinary smartwatches is not simply that it can survive a pool. It is built around long workouts, outdoor durability, multisport transitions, and fewer charging interruptions. That makes it especially practical for open-water swimmers and athletes who also train for triathlons or spend time outdoors.
Choose it if: you want one durable watch for swimming, outdoor sports, long GPS sessions, and occasional dive-related use.
Skip it if: you mainly want calls, messages, payments, third-party apps, and a slim everyday watch. It is also bulky and expensive for a casual pool swimmer, and its smartwatch experience is less tightly integrated with phones than Apple’s, Samsung’s, or Google’s.
Important qualification: the supplied current testing coverage confirms a dive mode and 10 ATM rating, but a dive mode should not be treated as proof that the watch replaces a professional dive computer.
2. Apple Watch Ultra 3 — best smartwatch for iPhone users
Best for: iPhone owners who want a premium smartwatch, cellular independence, strong swim tracking, ruggedness, and recreational diving features.
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The Apple Watch Ultra 3 has 100-meter water resistance under ISO 22810:2010 and an EN13319 recreational scuba rating to 40 meters. Apple lists pool and open-water swimming, snorkeling, scuba, and high-speed water-sports support, along with a depth gauge and water-temperature sensor. Its rated battery life is up to 42 hours.
It is the best choice for someone who wants a real smartwatch first but does not want to give up serious water capability. It offers the strongest combination of iPhone integration, cellular connectivity, notifications, apps, music, and swimming features in Apple’s range.
US price: from $799 on Apple’s current purchase page, as checked August 9, 2026.
Choose it if: you use an iPhone and want one watch for daily life, pool workouts, open-water sessions, and recreational scuba to the manufacturer’s stated limit.
Skip it if: you use Android, need multi-week battery life, have a small wrist, or only need basic lap and distance tracking. It is large and expensive compared with the Apple Watch SE 3.
Apple says the Ultra 3 should not be used below 40 meters for recreational scuba. Its water resistance can also diminish with age, impacts, damage, or repairs.
3. Garmin Forerunner 970 — best for serious swim and triathlon training
Best for: Triathletes, swim-bike-run athletes, and swimmers who want detailed training data rather than the broadest smartwatch app ecosystem.
The Forerunner 970 carries a 5 ATM swim rating and supports pool and open-water swimming, swim-run, triathlon, and multisport activities. Its listed swim metrics include distance, pace, stroke count and rate, stroke distance, SWOLF, stroke type, drill logging, auto-rest, pacing alerts, pool workouts, and underwater wrist heart rate.
Its rated smartwatch battery life is up to 15 days. Garmin gave it a US launch MSRP of $749.99. That combination makes it a better endurance-training tool than most mainstream smartwatches, even though its water rating is lower than the fēnix 8’s.
Choose it if: you need structured workouts, deep multisport support, long battery life, and detailed swim analysis.
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Skip it if: you need 10 ATM protection, dive mode, or the most polished phone, payment, and app experience. It is a training watch, not a dive watch.
4. Samsung Galaxy Watch Ultra2 — best rugged Android smartwatch for diving
Best for: Android users who want a large, rugged smartwatch with dive-oriented hardware and Samsung services.
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The Galaxy Watch Ultra2 combines 10 ATM water resistance, IP69K, and EN13319 certification. Samsung lists real-time depth, elapsed dive time, and water-temperature data to 40 meters. Its battery has an 800 mAh capacity, and Samsung claims up to 60 hours with the always-on display enabled.
It is a compelling Android alternative to the Apple Watch Ultra 3 for users who value a bright, durable case, physical controls, and dive-related information. It can be used in pools and open water, but Garmin remains the stronger choice if detailed swim-training analysis is the main reason you are buying.
Choose it if: you use Android, want Samsung’s smartwatch features, and need more rugged water capability than a standard Galaxy Watch.
Skip it if: you have a small wrist, want a lightweight lap-counter, or need Garmin’s swim-specific training ecosystem.
Samsung’s 2026 newsroom material identifies the Galaxy Watch9 and Galaxy Watch Ultra2 as current watches. Do not transfer the Ultra2’s water specifications to the Galaxy Watch9 without checking the exact Watch9 model page.
5. Google Pixel Watch 4 — best everyday Google watch for pool swimming
Best for: Pixel and Android users who mainly swim in pools and value Google’s health and smartwatch ecosystem.
The Pixel Watch 4 has a 5 ATM and IP68 rating. The 41 mm version is rated for up to 30 hours of battery life, while the 45 mm version is rated for up to 40 hours.
In pool mode, Google provides live lap count, distance, calories, and heart rate. That is enough for many casual and fitness swimmers. The major limitation is open water: Google’s current help documentation says that Swim Open records duration and heart rate, not a full GPS route and distance package. This makes the Pixel Watch 4 a pool watch first, not the best choice for ocean swimmers.
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Skip it if: you need mapped open-water routes, long battery life, deep swim workouts, or dive capability.
6. Apple Watch SE 3 — best budget Apple Watch for swimming
Best for: iPhone users who want legitimate pool and open-water swim tracking without paying for the Ultra 3.
The Apple Watch SE 3 has 50-meter water resistance under ISO 22810:2010 and supports pool and open-water swim workouts. Its swimming features include custom workouts, splits, auto sets, SWOLF, automatic stroke detection, kickboard detection, pace, distance, and laps.
The US starting price is $249 on Apple’s current purchase page, as checked August 9, 2026. Current US models require an iPhone 11 or later running iOS 26 or later.
Choose it if: you want Apple’s excellent phone integration and core swim metrics at the lowest Apple Watch price.
Skip it if: you need scuba or freediving support, 10 ATM protection, a depth gauge, cellular independence, or multi-day endurance. Apple positions it for shallow-water swimming, not diving or high-velocity water sports.
7. Amazfit Active 2 — best low-cost cross-platform option
Best for: Budget buyers who use either iPhone or Android and want pool and open-water modes.
The Amazfit Active 2 has a 5 ATM rating, more than 160 sports modes, and dedicated pool swimming, open-water swimming, fin swimming, and artistic swimming modes. Amazfit rates typical battery life at up to 10 days. The US manufacturer page lists the round version from $99.99, as checked August 9, 2026.
Choose it if: price, cross-platform compatibility, and battery life matter more than premium apps, payments, or advanced training analysis.
Skip it if: you need dive functions, a mature endurance-training ecosystem, or the deepest swim data. Amazfit warns against diving, water skiing, high-speed water flow, hot showers, saunas, and unsuitable bands.
8. Garmin Venu 4 — best lifestyle Garmin for regular swimming
Best for: People who want long battery life, health tracking, calls, music, payments, and routine swimming rather than specialist triathlon or dive features.
The Venu 4 is rated 5 ATM and is intended for swimming and snorkeling. Garmin lists up to 12 days of smartwatch battery life, and the watch starts at $549.99 according to Garmin’s launch announcement.
It is a good middle ground: more lifestyle-oriented than the Forerunner 970 or fēnix 8, but far less dependent on daily charging than an Apple, Google, or typical Wear OS watch.
Choose it if: you swim regularly but want a comfortable everyday fitness smartwatch rather than a specialist swim computer.
Skip it if: you need dive mode, 10 ATM protection, advanced triathlon features, or Garmin’s deepest endurance-training tools.
9. Garmin Swim 2 — best dedicated swim specialist
Best for: Swimmers who care more about pool and open-water training than notifications, apps, or smartwatch design.
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The Garmin Swim 2 has dedicated pool and open-water profiles with stroke detection, SWOLF, drill logging, auto-rest, pacing alerts, Critical Swim Speed, custom workouts, and underwater wrist heart rate. It has a 5 ATM rating and up to seven days of smartwatch battery life.
Critical Swim Speed is Garmin’s approximation of a sustainable threshold swimming speed. SWOLF generally combines the time taken to complete a length with the number of strokes used, producing an efficiency score. Both are useful for comparing your own sessions, but neither should be treated as a universal measure that makes swimmers with different techniques directly comparable.
Choose it if: swimming is your primary sport and you want swim-specific tools without buying a full multisport flagship.
Skip it if: you want the newest general-purpose smartwatch, extensive outdoor navigation, or the longer battery and broader capabilities of a current Garmin multisport watch.
What about Huawei watches and dedicated dive computers?
Huawei Watch 5 and Watch Fit 4 Pro are worth considering in markets where Huawei’s app, payment, retailer, and warranty support work for you. The supplied Huawei specifications identify 5 ATM water resistance and EN13319 or freediving-related claims to 40 meters, depending on the model and activity. Availability and feature support vary substantially by country, so verify the local product page before buying.
For repeated or serious diving, look beyond ordinary smartwatches. Garmin Descent models are purpose-built dive computers, while the Apple Watch Ultra 3 and Samsung Galaxy Watch Ultra2 are recreational dive-capable smartwatches with stated 40-meter limits. None should be treated as the sole safety instrument for serious diving.
Phone compatibility is a first-order buying decision
| Watch family | Phone situation | Buying implication |
|---|---|---|
| Apple Watch Ultra 3 and SE 3 | Apple-only. Current US models require an iPhone 11 or later with iOS 26 or later. | Do not buy one for an Android phone. |
| Samsung Galaxy Watch | Android-compatible. Some health features require a Samsung Galaxy phone. | Best integration is within Samsung’s ecosystem. |
| Google Pixel Watch 4 | Android and Google ecosystem. | Strong choice for Pixel owners, especially pool swimmers. |
| Garmin | Generally compatible with iPhone and Android for the relevant models. | Best cross-platform option for serious training. |
| Amazfit | Generally cross-platform. | Good value, but app, payment, and third-party support are less extensive. |
| Huawei | Cross-platform in many markets. | Check local app, payment, retailer, and warranty support first. |
Apple’s current purchase page, Samsung’s compatibility information, and Garmin’s product pages should be checked again if you are buying outside the US or using an older phone.
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Which swim metrics are actually useful?
- Length or lap
- A completed pool length. Manufacturers use the word “lap” inconsistently; on some watches, one displayed lap means one length rather than a down-and-back.
- Stroke type
- Usually freestyle/front crawl, backstroke, breaststroke, or butterfly. Automatic detection is more dependable during consistent lengths than mixed drills.
- Stroke count
- The estimated number of arm strokes used for a length or interval.
- Stroke rate
- Usually expressed as strokes per minute.
- Stroke distance
- An estimate of how far you travel per stroke, calculated from recorded movement and distance.
- SWOLF
- A swimming-efficiency score generally combining the time for a length with the number of strokes. Lower is not automatically better if you are changing pace or technique.
- Auto-rest
- Attempts to detect when you stop swimming so rest time can be recorded without pressing a button.
- Drill log
- A manual or guided way to record kickboard, one-arm, sculling, and other drills that normal lap algorithms may misread.
- Critical Swim Speed
- A Garmin training metric that approximates sustainable threshold speed.
More metrics do not automatically mean more accurate metrics. Pool distance is usually inferred from accelerometer and gyroscope movement, wall turns, and the pool length you entered—not directly measured with a tape measure. The best watch is the one whose data is consistent enough to help you compare your own sessions.
Battery life: the overlooked swimming feature
A long battery is valuable when you swim on vacation, record sleep, train for a triathlon, or spend long periods away from a charger. A watch that needs charging every night may miss the sleep data you wanted to compare with your workouts.
| Model | Representative rated battery | What the number means |
|---|---|---|
| Apple Watch Ultra 3 | Up to 42 hours | Apple’s rated figure; cellular, display, GPS, and workout use can reduce it. |
| Google Pixel Watch 4 | Up to 30 hours, 41 mm; 40 hours, 45 mm | Size-specific Google estimates. |
| Garmin Forerunner 970 | Up to 15 days in smartwatch mode | Garmin’s estimate; GPS and display use are separate conditions. |
| Garmin fēnix 8 | Up to 16 days smartwatch mode; approximately 47 hours GPS | Figures from TechRadar’s current tested listing; configuration affects results. |
| Amazfit Active 2 | Up to 10 days typical use | Amazfit’s typical-use estimate. |
| Samsung Galaxy Watch Ultra2 | Up to 60 hours with always-on display enabled | Samsung’s stated condition, not a guaranteed workout duration. |
| Garmin Venu 4 | Up to 12 days smartwatch mode | Garmin’s launch-announcement estimate. |
| Garmin Swim 2 | Up to seven days smartwatch mode | Garmin’s estimate for the older swim-specialist model. |
Do not compare these figures as if they were identical laboratory tests. Always check watch size, always-on display settings, GPS mode, LTE use, music playback, connected sensors, and power-saving modes. A GPS open-water recording consumes considerably more power than a short pool workout.
How to improve swim-recording accuracy
- Enter the exact pool length. A wrong pool setting makes every distance and pace calculation wrong even if the watch counts every turn correctly.
- Wear the watch snugly. It should not slide around during the stroke cycle, especially if you want heart-rate data.
- Start open-water recording after the watch has a GPS fix. Satellite reception is already difficult during swimming; starting before a fix can increase the initial error.
- Push off and finish lengths normally. Stopping in the middle of a length or changing stroke midway can confuse lap algorithms.
- Use drill mode when available. Kickboards, one-arm drills, sculling, and swimming without normal arm movement can be recorded incorrectly in standard swim mode.
- Use manual intervals when auto-rest fails. Frequent stops and long rests are difficult for automatic detection.
- Review trends, not one isolated number. Calories, heart rate, distance, recovery, and training scores are estimates and fitness aids, not medical or laboratory measurements.
Google documents several causes of inconsistent swim data, including too few lengths, frequent rests, stopping mid-length, resting for more than 60 seconds after a length, changing stroke during a length, using a kickboard, a loose fit, cold water, strong currents, and irregular strokes. These limitations apply broadly to wrist-based swim tracking, not just to Pixel Watch.
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Optical wrist heart-rate sensors face more difficult conditions in water. Water movement, wrist motion, poor fit, cold-induced circulation changes, and optical interference can all reduce reliability. Treat underwater heart rate as useful guidance rather than an exact reading.
Serious swimmers and triathletes should check whether their chosen watch supports a compatible external heart-rate accessory. Garmin supports compatible sensors that can store swim heart-rate data and transfer it after the workout, which can be more useful than relying only on an optical sensor during hard sets.
Water Lock and what to do after a swim
Apple Watch
- Water Lock activates automatically when starting a supported water-based workout.
- To activate it manually, press the side button, open Control Center, and tap Water Lock.
- To exit, press and hold the Digital Crown until the watch unlocks and ejects water from the speaker.
Apple’s Water Lock instructions explain the current controls and speaker-ejection process.
Google Pixel Watch
- Open the Exercise app.
- Select Swim.
- Choose Pool or Open.
- Set the pool length before starting a pool workout.
- Water Lock turns on automatically during a swim workout.
- Press and hold the crown for two seconds to turn it off.
Samsung Galaxy Watch
Use Water lock mode during swimming. Afterward, turn it off and use the Eject water function if the speaker sounds muffled. Shake off residual water, dry the watch, and rinse it after seawater exposure. Samsung’s support instructions cover the relevant controls.
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A swim rating is not a promise that the seals will remain perfect forever. Apple and Google both warn that water resistance can diminish with age, wear, impacts, repairs, or damage. Do not assume that water damage is covered by warranty; check the manufacturer’s regional warranty terms.
After pool or ocean swimming:
- Rinse the watch and band with clean fresh water.
- Dry both with a soft, clean cloth.
- Clear water from the speaker or microphone using the watch’s water-ejection feature.
- Inspect the case after a drop, collision, cracked glass, or repair.
- Use a silicone, fluoroelastomer, or other manufacturer-approved swim band.
Avoid hot tubs, saunas, steam rooms, hot showers, hot springs, soap, shampoo, body wash, pressure washers, water jets, waterslides, and sudden temperature changes. Heat, steam, detergents, chemicals, and pressure can weaken seals even when ordinary swimming is permitted.
The band matters too. Google says some Pixel Watch leather and metal bands are not water-resistant. Huawei warns that some composite, titanium, ceramic, and vegan-leather straps are unsuitable for water activities, and Amazfit advises changing unsuitable leather or metal bands before swimming. A swim-rated case paired with an unsuitable strap is not a complete swim-ready setup.
Which watch should you buy?
- Swimming with an iPhone: Choose the Apple Watch Ultra 3 for premium smartwatch and water features, or the Apple Watch SE 3 for affordable pool and open-water tracking.
- Swimming with a Samsung phone: Choose the Galaxy Watch Ultra2 if you want ruggedness and dive-oriented hardware; choose a Garmin if detailed swim and multisport training matters more.
- Swimming with a Pixel phone: Choose the Pixel Watch 4 for pool swimming and Google integration. Choose Garmin for mapped open-water sessions or longer battery life.
- Lap swimming: The Apple Watch SE 3, Pixel Watch 4, Garmin Swim 2, and Garmin Venu 4 all cover the basics; Garmin Swim 2 is the specialist choice for structured swim data.
- Ocean swimming: Favor the Garmin fēnix 8, Forerunner 970, Apple Watch Ultra 3, or another model whose open-water mode explicitly records GPS distance and routes. Do not assume the Pixel Watch 4 does this.
- Triathlon: Choose the Forerunner 970 for training depth or the fēnix 8 for a more rugged outdoor watch with a 10 ATM rating.
- Snorkeling: A 5 ATM watch may be suitable when the manufacturer explicitly permits snorkeling, but 10 ATM gives you a more appropriate margin for rougher surface conditions.
- Scuba or freediving: Choose a purpose-built dive computer or a dive-capable model with explicit certification and depth limits, such as the Apple Watch Ultra 3 or Galaxy Watch Ultra2. Do not rely on an ordinary 5 ATM fitness watch.
- Cheapest sensible option: The Amazfit Active 2 is the lowest-cost cross-platform recommendation here, while the Apple Watch SE 3 is the budget choice for iPhone users.
- Longest battery: Garmin models are generally the better fit. The fēnix 8, Forerunner 970, and Venu 4 are much less charging-dependent than Apple and Google alternatives.
- Small wrists: Consider a lighter Apple Watch SE 3, Amazfit Active 2, Garmin Venu 4, or smaller Forerunner model instead of the large Ultra-class watches.
Bottom-line buying rules
Buy the Garmin fēnix 8 if your definition of best prioritizes water resistance, battery life, outdoor durability, multisport training, and occasional dive-related use. Buy the Apple Watch Ultra 3 if you use an iPhone and want the best blend of everyday smartwatch features and recreational water capability. Choose the Garmin Forerunner 970 for serious swim and triathlon training, the Samsung Galaxy Watch Ultra2 for rugged Android diving features, and the Apple Watch SE 3 or Amazfit Active 2 when value matters most.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsMost importantly, match the watch to the water. A watch that is excellent at counting pool lengths may be poor at recording an ocean route, and a watch with a 100-meter pressure rating is not automatically approved for a 100-meter dive.
Frequently Asked Questions
Can I swim with a 5 ATM smartwatch?
Usually, yes, when the manufacturer explicitly rates that model for swimming. 5 ATM represents approximately 50 meters of static water pressure; it is not a promise that the watch can be taken to a 50-meter depth. Avoid diving, high-speed water jets, hot water, steam, and sudden temperature changes unless the manufacturer specifically approves them.
Is a smartwatch with IP68 waterproof enough for swimming?
Not necessarily. IP68 describes dust and immersion resistance, but the exact depth and duration are manufacturer-defined. Look for a separate swimming approval or an ATM rating before buying a watch for regular pool or ocean use.
Can a smartwatch record GPS while swimming underwater?
GPS signals do not work normally through water. Open-water watches estimate movement between surface appearances and reacquire satellite information when the wrist reaches the surface. Treat recorded distance as an estimate, and verify that the specific model has an open-water GPS mode. Google documents that Pixel Watch 4’s open-water mode records duration and heart rate only.
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Can I use an Apple Watch or Galaxy Watch as my only dive computer?
No. The Apple Watch Ultra 3 and Galaxy Watch Ultra2 have dive-related features and stated recreational limits, but certification and a depth sensor do not automatically make either watch a complete substitute for a dedicated dive computer, training, or normal dive-safety equipment.
How do I stop my watch from counting pool laps incorrectly?
Set the correct pool length, wear the watch snugly, swim complete lengths with consistent strokes, and use drill mode for kickboards or technique exercises. Frequent rests, stopping mid-length, changing stroke midway, cold water, strong currents, irregular strokes, and swimming without normal arm movement can all confuse lap algorithms.
The Bottom Line
Best overall: Garmin fēnix 8. Best for iPhone: Apple Watch Ultra 3. Best for serious swim and triathlon training: Garmin Forerunner 970. Best rugged Android choice: Samsung Galaxy Watch Ultra2. Best value: Apple Watch SE 3 for iPhone or Amazfit Active 2 for cross-platform use.
Choose by activity, not by the word “waterproof”: 5 ATM is the practical baseline for ordinary swimming, 10 ATM is preferable for rougher surface water, and scuba or freediving calls for explicit dive certification and depth limits.
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