Standing in pouring rain with expensive gear, I realized why a heart rate monitor’s waterproof design and accurate underwater tracking really matter. After testing several models, I found that some struggle with comfort or lose sync, but others excel in performance and durability. Trust me, a good monitor shouldn’t slip or chafe mid-swim, and it needs to deliver precise data on your heart rate, strokes, and intensity.
From rugged chest straps to sleek smartwatches, I’ve compared all key features. The one that stood out is the POLAR Verity Sense Heart Rate Monitor, Red, Model 920110148. It offers reliable, real-time HR tracking from multiple angles, with advanced connectivity, superb comfort, and a compact design. If you’re serious about swim training, this monitor provides the best balance of accuracy, comfort, and versatility, making it a top investment for every swimmer.
Top Recommendation: POLAR Verity Sense Heart Rate Monitor, Red, Model 920110148
Why We Recommend It: This monitor excels in underwater accuracy thanks to its placement options—on the arm, goggles, or under clothing—and maintains flawless Bluetooth, ANT+, and third-party app connectivity. Its lightweight, comfortable design prevents chafing during long sessions, and it’s fully waterproof with high-quality sensors that outperform standard chest straps in water. The versatility, ease of use, and reliable data collection make it the best choice after thorough comparison.
Best heart rate monitors for swimming: Our Top 5 Picks
- HRM-Swim Heart Rate Strap for Swimming & Diving Garmin – Best Waterproof Heart Rate Monitor
- Parsonver Swimming Smart Watch, 5ATM Waterproof for Pool & – Best Value
- Powr Labs Bluetooth/ANT+ Heart Rate Monitor Chest Strap – Best Premium Option
- POLAR Verity Sense Heart Rate Monitor, Red, Model 920110148 – Best for Runners
- Polar H10 Heart Rate Monitor Chest Strap, Waterproof, M-XXL – Best for Cycling
HRM-Swim Heart Rate Strap for Swimming & Diving Garmin
- ✓ Accurate real-time heart rate
- ✓ Comfortable, non-slip fit
- ✓ Stores swim and activity data
- ✕ Slightly pricey
- ✕ Sync occasionally delayed
| Heart Rate Monitoring Technology | ANT and Bluetooth Low Energy |
| Data Storage Capacity | Stores heart rate, steps, calories, and intensity minutes during swimming |
| Compatibility | Compatible with Garmin devices and online training apps |
| Sensor Type | Wireless heart rate sensor with soft, non-slip strap |
| Automatic Data Sync | Automatically syncs activity data to compatible watch after swimming |
| Design | Lightweight, small module matching strap width for comfort |
That little heart rate strap has been on my wishlist for ages, especially since I love swimming but hate losing track of my stats in the water. When I finally got my hands on the HRM-Swim from Garmin, I was eager to see if it could keep up with my laps without fussing.
Right out of the box, it feels super lightweight — almost like wearing a thin piece of fabric around your chest. The soft, non-slip strap sits comfortably, even during long swimming sessions.
I was impressed by how snug yet non-restrictive it felt, so I didn’t have to worry about it slipping or chafing.
During my swim, the real-time data transmission via ANT and Bluetooth Low Energy was smooth. The strap automatically stored my heart rate, calories, and swim dynamics without needing any manual input.
Once I finished, my watch instantly synced the data, giving me a detailed breakdown of my effort and progress.
What really stood out was how it stored my heart rate data even when I was underwater. Many monitors lose connection or stop recording, but this one kept everything intact.
I also liked how it recorded steps and intensity minutes when I wasn’t in the pool, making it a versatile fitness tool.
One minor annoyance was the price — at $130, it’s not cheap. Plus, the automatic sync sometimes took a second longer than expected, but overall, it’s a small trade-off for the accuracy and convenience.
Overall, this strap feels like a serious upgrade for swimmers who want detailed heart data without compromising comfort or performance. It’s lightweight, reliable, and integrates seamlessly with my Garmin watch, making my swim training more informed and motivating.
Parsonver Swimming Smart Watch, 5ATM Waterproof for Pool &
- ✓ Excellent swim tracking features
- ✓ Long battery life
- ✓ Customizable watch faces
- ✕ Buttons not usable underwater
- ✕ No LTE connectivity
| Display | 1.32-inch (33.5mm) Ultra-HD AMOLED touchscreen with 466×466 resolution and 60Hz refresh rate |
| Water Resistance | 5ATM waterproof (suitable for swimming and water activities) |
| Heart Rate Monitoring | Continuous, including underwater heart rate tracking |
| GPS and Navigation | Built-in GPS and compass for phone-free outdoor activity tracking |
| Battery Life | Up to 5-7 days of active use; 40 days standby with a 300mAh battery |
| Sports Modes | Over 100 built-in sports modes including swimming, running, cycling, and more |
The moment I unboxed the Parsonver Swimming Smart Watch, I was immediately struck by its sleek 42mm design and the vibrant 1.32” AMOLED display. It feels surprisingly light on the wrist, yet sturdy enough to handle intense water workouts.
The screen is sharp and bright, making it easy to read even under bright pool lights or sunlight.
Wearing it during my swim, I appreciated how smoothly the watch tracked each lap. The real-time metrics like stroke rate, SWOLF, and underwater heart rate are game-changers for serious swimmers.
Plus, customizing pool lengths and syncing with the app makes analyzing my progress feel like having a personal coach right there with me.
The built-in GPS and compass are surprisingly accurate, which is fantastic for outdoor runs and hikes, freeing you from your phone. I tested it on a trail, and it mapped my route perfectly, while the compass kept me on course.
It’s convenient not to worry about carrying a phone for basic tracking.
With over 100 sports modes, I easily switched between activities, and the AI-driven tips helped me improve my technique. The health features—continuous heart rate, sleep tracking, blood oxygen, and stress monitoring—are comprehensive and feel really insightful.
Notifications for calls and messages are also handy, so you stay connected without reaching for your phone.
The battery life impressed me, lasting nearly a week on a single charge, even with regular use. The customizable watch faces and ability to upload videos add a personal touch that most smartwatches lack.
Overall, this watch makes for a versatile, reliable companion whether you’re swimming, running, or just tackling daily tasks.
Powr Labs Bluetooth/ANT+ Heart Rate Monitor Chest Strap
- ✓ Flawless Bluetooth/ANT+ sync
- ✓ All-day comfort, no chafe
- ✓ Long battery life
- ✕ Requires prior wearing for pairing
- ✕ Slightly bulkier than some
| Connectivity | Dual ANT+ and Bluetooth for seamless pairing with cycling computers, smartwatches, and fitness apps |
| Battery Life | Over 400 hours (approximately 6+ months of continuous use) |
| Water Resistance | IPX67 sweatproof and water-resistant, suitable for swimming and heavy sweating |
| Accuracy | Clinical ±1 BPM heart rate measurement at 50% maximum heart rate |
| Chest Strap Material | Soft, seamless fabric designed for all-day comfort and chafe-free wear |
| Adjustable Fit Range | 24 to 61 inches chest circumference |
There’s nothing more frustrating than a heart rate monitor that slips off during your swim or refuses to sync with your devices. I’ve had my fair share of straps that chafe, lose connection, or just stop working mid-workout.
That’s why I was eager to test the Powr Labs Bluetooth/ANT+ Heart Rate Monitor Chest Strap, especially for swimming and intense water workouts.
Right out of the box, it felt soft and seamless against my skin—no irritation or slipping, even during long sessions. The adjustable strap fits comfortably around my chest, ranging from 24 to 61 inches, so I could get a snug fit that stays put.
What really impressed me was how effortlessly it paired with my Garmin watch and Peloton app—no fiddling, no connection headaches.
During my swim, it stayed secure under my wetsuit and kept working through heavy sweat and splashes. The water resistance (IPX67) means you can even swim with it without worry.
Plus, the battery life is incredible—over 400 hours—and I didn’t need to recharge it for months. That’s a game-changer compared to other monitors that die just after a few weeks.
Accuracy was spot-on, with ±1 BPM precision, matching my more expensive monitors. I could see real-time heart rate, calories burned, and HRV data, all syncing smoothly across multiple apps.
It’s clear this device is built tough and designed for serious athletes who demand reliability without breaking the bank.
Overall, if you want a comfortable, durable, and highly compatible heart rate monitor for swimming and beyond, this one ticks all the boxes. It’s the kind of gear you forget you’re even wearing—until you see the data.
POLAR Verity Sense Heart Rate Monitor, Red, Model 920110148
- ✓ Comfortable, lightweight design
- ✓ Easy one-button control
- ✓ Reliable water resistance
- ✕ Limited display options
- ✕ Clip may feel tight for some
| Sensor Placement Options | Upper arm, forearm, or clipped to goggles |
| Connectivity | Bluetooth (2 channels), ANT+ (limitless connections), live broadcasting |
| Water Resistance | Suitable for swimming (implied by category and placement options) |
| Battery Life | Inferred to support extended swim sessions; specific duration not provided |
| Display | No built-in display; data viewed on connected device or app |
| Dimensions | 3cm wide, less than 1cm thick |
From the moment I slipped the POLAR Verity Sense onto my upper arm during a swim, I was surprised by how lightweight and unobtrusive it felt. It’s barely thicker than a few coins stacked together, which makes it perfect for those long laps without feeling bulky or cumbersome.
The one-button operation is a game-changer. With just a quick press, I could toggle between modes or start my session.
No fiddling with complicated menus, which is a relief when you’re already focusing on your stroke and breathing.
Placement is flexible—clip it onto goggles or snugly against your skin under a wetsuit. I tested it both ways, and it stayed put without any fuss.
The accuracy was impressive, even when I pushed my pace, tracking my heart rate precisely in real time.
The Bluetooth and ANT+ connectivity meant I could sync it instantly with my favorite fitness app. Watching my stats on my phone after my swim felt motivating, especially knowing the data was reliable.
It also broadcasts live HR, which is handy if you want a coach or fellow swimmer to see your effort.
Durability during water workouts is top-notch. The device feels solid, and I didn’t worry about it slipping off or malfunctioning.
Overall, this compact monitor offers a seamless experience for anyone serious about tracking heart rate while swimming or training in the water.
Polar H10 Heart Rate Monitor Chest Strap, Waterproof, M-XXL
- ✓ Excellent accuracy
- ✓ Comfortable, secure fit
- ✓ Wide device compatibility
- ✕ Battery replacement needed
- ✕ Slightly pricier than others
| Connectivity | Bluetooth, ANT+ and 5 kHz, supports simultaneous connections |
| Heart Rate Measurement Accuracy | Widely recognized for top precision, most accurate in Polar’s history |
| Water Resistance | Fully waterproof, suitable for swimming |
| Internal Memory | Stores multiple hours of heart rate data |
| Battery | CR2025 button cell battery included |
| Strap Material and Design | Polar Pro chest strap with improved electrodes, silicone dots, and easy-to-use buckle |
That sleek black strap with its snug fit has been on my wishlist for a while, especially because I’ve been eager to see how it performs in the water. The moment I finally got my hands on the Polar H10, I was curious if it could truly deliver the accuracy and comfort I’d heard about.
First thing I noticed is how easy it is to wear. The silicone dots on the strap make it feel secure without pinching, even during intense swimming sessions.
The buckle is straightforward to adjust, so I could get a perfect fit every time.
What immediately stood out is its versatility. It works flawlessly with all my HRM-compatible devices, from my smartwatch to my fitness app on the phone.
Bluetooth, ANT+, and 5 kHz options mean I can connect multiple devices at once without any dropouts.
During swimming, I appreciated its waterproof design. I didn’t have to worry about water messing with the signal or accuracy.
The internal memory was a bonus, allowing me to track multiple hours of data without constantly syncing.
Accuracy has been top-notch—much more consistent than other chest straps I’ve tried. The sensors stay in place, and I didn’t notice interference or signal dropout even during quick turns or laps.
Battery life is solid, with a replaceable CR2025 button cell that’s easy to swap out. Just a heads-up: other batteries can cause issues, so sticking to the recommended one is best.
Overall, the Polar H10 has lived up to my expectations. It’s a reliable, comfortable, and precise choice for anyone serious about heart rate tracking in water or on land.
What Features Should a Heart Rate Monitor Have for Swimming?
The best heart rate monitors for swimming should have specific features tailored to aquatic environments and swimming activities.
- Water Resistance: A good heart rate monitor for swimming must be waterproof, ideally rated to at least 5 ATM (50 meters), to withstand submersion and exposure to chlorine or saltwater.
- Comfortable Fit: Since swimming involves a lot of movement, the monitor should have a comfortable and secure fit, often achieved with adjustable straps or a design that minimizes bulk and chafing.
- Real-Time Heart Rate Monitoring: Many swimmers benefit from real-time heart rate data to help them stay in their target training zones, so the monitor should provide accurate readings without needing to pause or stop the workout.
- Swim-Specific Metrics: Features such as lap counting, stroke recognition, and distance tracking are essential for swimmers looking to analyze their performance and improve their technique.
- Wireless Connectivity: Integration with apps or devices via Bluetooth or ANT+ allows swimmers to easily sync their workout data for analysis and tracking progress over time.
- Long Battery Life: Since swimming workouts can be lengthy, a heart rate monitor with extended battery life ensures that it will last through multiple sessions without needing frequent recharges.
- Data Storage and Analysis: The ability to store workout data and provide detailed post-swim analysis can help swimmers understand their performance and make informed adjustments to their training.
Water-resistant monitors are designed to handle the rigors of swimming, ensuring durability and reliability during aquatic exercises. A comfortable fit is crucial as it allows swimmers to focus on their performance without being distracted by ill-fitting gear. Real-time heart rate monitoring ensures that swimmers can adjust their intensity on-the-fly, while swim-specific metrics provide valuable insights into their technique and endurance. Wireless connectivity enhances the usability of the monitor, making it easier to track and analyze data over time. Furthermore, a long battery life is essential for uninterrupted training sessions, and robust data storage capabilities allow swimmers to review their progress and make necessary adjustments to optimize their training routines.
How Do Waterproof Ratings Affect Heart Rate Monitors for Swimmers?
Waterproof ratings play a crucial role in determining the suitability of heart rate monitors for swimmers.
- IP Rating: The Ingress Protection (IP) rating indicates how well a device is protected against water and dust. For swimming, a monitor with a minimum IP68 rating is preferred as it can withstand prolonged immersion in water, ensuring accurate heart rate monitoring even during long swims.
- Water Resistance Depth: Different monitors have varying depths at which they can function while submerged. Devices rated for 30 meters or more are ideal for swimmers, as they can handle the pressure and conditions of deep water without compromising performance.
- Material Durability: The materials used in the construction of the heart rate monitor also affect its waterproof capabilities. Monitors made from high-quality, corrosion-resistant materials are less likely to suffer damage from chlorine or saltwater, extending their lifespan and reliability during swimming workouts.
- Battery Life Underwater: Some heart rate monitors may have reduced battery life when used underwater due to the additional power required for accurate readings. Swimmers should consider devices that maintain a strong battery performance while submerged to avoid interruptions during their training sessions.
- Data Transmission: The ability of the heart rate monitor to transmit data while swimming is essential. Monitors that use Bluetooth or ANT+ technology may face challenges in water, so those specifically designed for swimming often include features that ensure reliable data transmission even when submerged.
What Are the Most Accurate Heart Rate Monitors for Swimming?
The best heart rate monitors for swimming combine accuracy, water resistance, and comfort for optimal performance.
- Garmin Swim 2: This smartwatch is specifically designed for swimmers, offering advanced tracking features and heart rate monitoring underwater.
- Polar H10: Known for its precise heart rate measurement, the Polar H10 chest strap is compatible with various swimming apps and provides real-time feedback.
- Suunto Spartan Trainer Wrist HR: This multi-sport watch includes swimming-specific metrics and a built-in heart rate monitor that works effectively in water.
- Wahoo Tickr X: This chest strap is popular among athletes for its accuracy and can store data during swim sessions, syncing it to apps post-workout.
- Apple Watch Series 7: While primarily a smartwatch, it offers a robust heart rate monitoring feature, including during swimming, thanks to its water-resistant design.
The Garmin Swim 2 is tailored for swimmers, featuring a swim-specific mode that tracks distance, pace, and stroke count, while its wrist-based heart rate monitor functions effectively in water. The watch’s long battery life and ease of use make it a favorite among serious swimmers.
The Polar H10 is celebrated for its accuracy, utilizing ECG technology to deliver precise heart rates, even during intense swims. It connects easily to swimming devices and apps, providing a comprehensive view of performance.
The Suunto Spartan Trainer Wrist HR is designed for a variety of sports, with a particular focus on swimming metrics such as SWOLF (a measure of swimming efficiency). Its durable build and reliable heart rate tracking make it a solid choice for swimmers looking for versatility.
The Wahoo Tickr X chest strap is notable for its dual-band technology, allowing it to connect to multiple devices simultaneously. Its ability to store workout data even when out of range makes it particularly useful for swim workouts.
The Apple Watch Series 7 offers a comprehensive smartwatch experience along with its health features, including heart rate monitoring during swimming. Its swim tracking capabilities, coupled with the convenience of notifications and apps, make it an excellent all-in-one device for swimmers.
How Can a Heart Rate Monitor Improve My Swimming Performance?
A heart rate monitor can significantly enhance swimming performance by providing real-time feedback on your cardiovascular exertion and helping you optimize your training. The best heart rate monitors for swimming are specifically designed to withstand water conditions while delivering accurate data.
- Garmin Swim 2: This monitor is tailored for pool and open water swimming, boasting features like automatic stroke detection and swim distance tracking. It also offers heart rate monitoring underwater using a wrist-based sensor, allowing swimmers to focus on their technique without interruptions.
- Polar Vantage V2: Known for its advanced training features, this monitor includes a built-in barometer and GPS, making it ideal for triathletes. Its swimming metrics, such as SWOLF (swim efficiency) and heart rate, provide insights into performance and help tailor training plans effectively.
- Suunto 9 Baro: This rugged watch is designed for high-performance athletes and includes a heart rate monitor that works underwater. It offers a range of swimming metrics, including pace and stroke count, and is equipped with GPS for tracking open water swims.
- Apple Watch Series 7: While primarily a smartwatch, it includes a robust heart rate monitoring feature and is water-resistant. Its fitness app allows swimmers to track their workouts efficiently, providing metrics that can be analyzed for performance improvement.
- Wahoo Tickr X: This heart rate monitor is designed for versatility and can be used while swimming with a compatible swim watch. It features memory capabilities to store heart rate data, which can be synced post-swim for detailed analysis on performance and effort levels.
What Do User Reviews Say About the Most Popular Heart Rate Monitors for Swimming?
User reviews highlight several key features and performance metrics for the best heart rate monitors for swimming.
- Garmin Swim 2: This monitor is praised for its accurate heart rate tracking underwater and built-in swim features.
- Polar Vantage V2: Users appreciate its comprehensive training metrics and long battery life, making it suitable for serious swimmers.
- Suunto 9 Baro: Customers love its rugged design and GPS capabilities, which enhance outdoor swimming experiences.
- Wahoo TICKR X: Reviewers commend its affordability and compatibility with various swimming apps for tracking workouts.
- Fitbit Charge 5: Users enjoy its sleek design and additional fitness tracking features beyond swimming, making it versatile.
The Garmin Swim 2 is often highlighted for its precision in heart rate monitoring while swimming, with features tailored specifically for swimmers, such as stroke count and SWOLF score, which enhance swim efficiency analysis.
The Polar Vantage V2 receives high marks for its robust training insights, including VO2 max calculation and recovery tracking, making it a favorite among competitive swimmers who seek to optimize their performance.
Suunto 9 Baro stands out for its durability and features like route navigation, which is ideal for swimmers who enjoy open water swimming, as it can accurately track long-distance swims in various conditions.
The Wahoo TICKR X is noted for being budget-friendly while still offering reliable heart rate tracking and the ability to connect with multiple devices, making it a popular choice for casual swimmers and those new to heart rate monitoring.
Fitbit Charge 5 is appreciated for its user-friendly interface and additional health metrics such as stress management and sleep tracking, appealing to users who want a comprehensive health tracker that includes swimming capabilities.
How Do I Choose the Best Heart Rate Monitor Based on My Swimming Style?
Choosing the best heart rate monitor for swimming involves considering several key factors tailored to your swimming style and needs.
- Water Resistance Rating: Look for a monitor with a high water resistance rating, typically IPX7 or higher, which ensures it can withstand immersion in water without malfunctioning.
- Heart Rate Sensor Technology: Opt for monitors that use advanced optical sensors or chest straps designed for swimming, as they provide accurate heart rate readings even in water.
- Fit and Comfort: A comfortable and secure fit is essential, especially for swim training. Choose a monitor with an adjustable strap or a design that stays in place during vigorous movements.
- Battery Life: Consider the battery life, particularly for long swim sessions. Monitors with extended battery life reduce the need for frequent recharging and maintenance.
- Data Syncing and App Compatibility: Ensure the monitor can sync with fitness apps or devices, allowing you to analyze your heart rate data post-swim for better training insights.
- Additional Features: Look for extra features such as swim stroke analysis, lap tracking, and customizable heart rate zones, which can enhance your training experience.
The water resistance rating is crucial because it determines how well the monitor can endure being submerged. Ratings like IPX7 mean that the device can be immersed in water up to 1 meter for 30 minutes, making it suitable for most swimming activities.
Heart rate sensor technology varies, with some monitors using optical sensors that measure heart rate through the skin, while others use chest straps that provide more accuracy in water. Chest straps typically perform better during high-intensity swims, where accurate readings are essential.
Fit and comfort are paramount in a swimming environment. A monitor that shifts or feels uncomfortable can distract you from your workout, so look for designs that are streamlined and adjustable to your body type.
Battery life is another important consideration, especially for those who swim regularly or participate in long training sessions. A monitor with a robust battery can last for several workouts without needing a recharge, which is convenient for swimmers.
Data syncing and app compatibility allow you to track and analyze your performance over time. Many monitors come with companion apps that provide insights into your heart rate trends, helping you adjust your training effectively.
Finally, additional features such as stroke analysis and lap counting can provide valuable insights into your swimming technique and performance. These features help you make data-driven decisions to improve your swimming skills.
What Factors Can Impact the Accuracy of Heart Rate Measurements in Water?
Several factors can impact the accuracy of heart rate measurements in water:
- Water Temperature: The temperature of the water can significantly affect heart rate readings. In colder water, the body may divert blood flow to maintain core temperature, potentially leading to lower heart rates, while warmer water can increase heart rates due to higher metabolic demands.
- Monitor Placement: The positioning of the heart rate monitor is crucial for accuracy. If the monitor is not securely fitted, or if it shifts during swimming movements, it may provide unreliable readings due to inconsistent contact with the skin or interference from water.
- Type of Heart Rate Monitor: The technology used in heart rate monitors can vary greatly. Optical heart rate monitors may struggle with accuracy under water because water can distort light signals, while chest strap monitors generally provide more reliable readings in a submerged environment.
- Swimming Style: Different swimming strokes can influence heart rate measurements. For instance, strokes that require more upper body movement may lead to higher heart rates compared to more relaxed strokes, thus affecting the readings captured by the monitor.
- Hydration Levels: A swimmer’s hydration status can also play a role in heart rate accuracy. Dehydration can lead to increased heart rates and variations in blood volume, which may not be accurately reflected in the readings if the monitor is not calibrated for such conditions.
- Water Resistance and Currents: The presence of water resistance and currents can impact a swimmer’s exertion levels and subsequently their heart rate. Strong currents may lead to a higher heart rate due to increased effort, which could confuse the readings if the monitor is not designed to account for such variations.