The best waterproof heart rate monitors make it easier to track training intensity through sweat, rain, pool sessions, and demanding workouts. This roundup compares chest straps and optical armbands across the features that matter most.
Whether you train with Garmin, Peloton, Strava, Wahoo, or a fitness watch, the right monitor should provide a stable connection, comfortable fit, and dependable readings without frequent charging.
Best 10 Waterproof Heart Rate Monitors Picks for 2026
Most Versatile
- Highly accurate Polar chest-strap sensor
- Fully waterproof with internal memory
- Bluetooth, ANT+, and 5 kHz connectivity
Best For: Athletes needing flexible connections and dependable training data
Best Value
- Affordable Polar heart-rate sensor
- Works with HRM equipment and phone apps
- Approximately 400-hour battery life
Best For: Everyday users wanting straightforward Polar tracking
Best Battery Life
COOSPO H808S Heart Rate Monitor
- IP67 waterproof chest-strap design
- Bluetooth and ANT+ connectivity
- Approximately 300-hour replaceable-battery life
Best For: Cyclists and app-focused athletes needing broad compatibility
Best Armband Design
Rechargeable Optical Heart Rate Armband
- Lightweight optical armband with IPX67 protection
- Auto-activates when worn
- Bluetooth and ANT+ support for up to three devices
Best For: Runners and cyclists seeking a comfortable chest-strap alternative
Best All-in-One Chest Strap Watch
- 5ATM waterproof watch and chest strap
- Real-time heart rate and calorie display
- Up to 365 days of battery life
Best For: Users wanting a simple heart-rate watch and chest strap combination
Best Wrist-Free Option
- Upper-arm, forearm, or goggle placement
- ANT+ and dual Bluetooth connectivity
- Streams or records workout heart rate
Best For: Multisport athletes prioritizing comfort and connection flexibility
Best Long-Battery Chest Strap
GEOID HS500 Heart Rate Monitor
- IP67 waterproof heart rate sensor
- ANT+ and Bluetooth compatibility
- Up to 800 hours of battery life
Best For: Connected training setups needing long battery runtime
Best Waterproof Armband
- IP68 design for sweat and rain
- Bluetooth and ANT+ connectivity
- Up to 24 hours of battery life
Best For: Runners, cyclists, and gym users who prefer an armband
Best Heavy-Duty Pick
- Up to 400 hours of battery life
- IPX67 sweat and water resistance
- Bluetooth and ANT+ support
Best For: Endurance athletes who want minimal charging
Best Rechargeable Waterproof Armband
moofit HW401 Heart Rate Monitor
- IP67 sweat and water protection
- Rechargeable battery lasts 20+ hours
- Bluetooth and ANT+ compatibility
Best For: Runners and fitness users who prefer a rechargeable armband
Most Versatile – Polar H10 Heart Rate Monitor
For shoppers comparing waterproof heart rate monitors, the Polar H10 stands out for its broad connectivity and strong accuracy reputation. This chest-strap sensor supports Bluetooth, ANT+, and 5 kHz connections, with simultaneous Bluetooth pairing options for compatible equipment and apps.
Best For: Athletes who want a highly accurate, fully waterproof chest strap with flexible device compatibility.
Pros:
- Recognized for top precision within Polar’s sensor lineup.
- Fully waterproof and includes internal memory for multiple hours.
- Supports Bluetooth, ANT+, and 5 kHz connections, including simultaneous connections.
- Battery is rated for approximately 400 hours.
Cons:
- Chest-strap design may not suit shoppers who prefer an armband.
- Requires the specified CR2025 battery; other battery sizes may cause malfunction.
The H10 is a strong all-around choice when measurement accuracy, waterproofing, and compatibility matter more than choosing the simplest or least expensive sensor.
Best Value – Polar H9 Heart Rate Sensor
Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap, M-XXL
Check Price On AmazonThe Polar H9 is a practical entry point for shoppers seeking waterproof heart rate monitors from an established brand. It uses high-accuracy sensing, works with HRM-compatible equipment, and connects with popular smartphone fitness apps through its wireless compatibility.
Best For: Everyday workouts and users who want a reliable Polar chest strap at an affordable positioning.
Pros:
- Built around Polar’s established heart-rate tracking technology.
- Works with HRM-compatible equipment and popular smartphone apps.
- Offers sizes from XS-S to M-XXL for a more suitable fit.
- Battery life is rated for approximately 400 hours.
Cons:
- The supplied notes do not specify a waterproof rating.
- Uses a chest strap, which may be less appealing than an armband for some users.
- Connectivity details are less extensive than the H10’s listed options.
The H9 makes sense for routine training when you want Polar’s established sensor platform and app compatibility without needing the H10’s expanded connection features.
Best Battery Life – COOSPO H808S Heart Rate Monitor
The COOSPO H808S is a feature-focused option among waterproof heart rate monitors, combining IP67 protection with Bluetooth and ANT+ transmission. Its chest strap is designed for real-time exercise tracking and works with devices and apps including Peloton, Strava, Wahoo Fitness, Polar Beat, and Zwift.
Best For: Cyclists and fitness users who want broad third-party compatibility, long battery life, and clear connection indicators.
Pros:
- IP67 waterproof rating supports demanding workouts.
- Bluetooth 4.0 and ANT+ allow connection to multiple compatible devices.
- Rated for approximately 300 hours on a replaceable CR2032 battery.
- LED and beep indicators help show operating and connection status.
Cons:
- The electrode areas should be moistened before use.
- The supplied notes recommend replacing the strap every six months or 300 washes.
- Users need to connect through the fitness app rather than the phone’s standard Bluetooth menu.
With IP67 protection and extensive app compatibility, the H808S is a sensible pick for connected training, provided you are comfortable with the maintenance steps for its washable strap.
Best Armband Design – Rechargeable Optical Heart Rate Armband
This rechargeable armband offers a chest-strap alternative for shoppers comparing waterproof heart rate monitors. Its optical sensor has an IPX67 sweat and waterproof rating, automatically activates when worn, and can transmit to up to three devices through Bluetooth and ANT+.
Best For: Runners, indoor cyclists, and athletes who prefer a lightweight armband over a chest strap.
Pros:
- Lightweight 20 g design with a soft-touch silicone strap.
- IPX67 sweat and waterproof protection.
- Automatically activates when it detects contact with the skin.
- Connects with up to three devices and supports a rechargeable battery.
Cons:
- Listed battery life is up to 60 hours, shorter than the chest-strap options here.
- Optical armband readings may appeal less to users specifically seeking chest-strap sensing.
- The supplied notes do not provide a specific accuracy figure.
The HW805 is worth considering when comfort and a button-free experience are priorities. Its broad app compatibility and dual-protocol transmission make it particularly useful for multi-device workouts.
Best All-in-One Chest Strap Watch – EZON T037 Heart Rate Monitor
For shoppers comparing waterproof heart rate monitors, the EZON T037 combines a chest strap with a dedicated digital watch. It displays real-time heart rate and calorie estimates without requiring a phone, while its customizable safety zone can alert you when your heart rate rises too high.
Best For: Runners, cyclists, and gym users who want a simple chest-strap system with an included watch.
Pros:
- 5ATM waterproof design for wet outdoor conditions.
- Chest strap provides heart rate readings across running, cycling, treadmill, and other workouts.
- Watch includes calorie estimates, stopwatch, hourly chime, and heart-rate-zone alerts.
- Watch and strap batteries can last up to 365 days.
Cons:
- Uses a chest strap rather than a wrist-worn sensor.
- Startup requires holding all four watch buttons simultaneously.
- Battery replacement requires a small Phillips screwdriver for the watch.
The T037 is a practical choice if you prefer a visible watch display and long battery life over app-based tracking. Its 5ATM rating adds useful water resistance, but the supplied notes do not recommend it specifically for swimming.
Best Wrist-Free Option – Polar Verity Sense Armband
Polar Verity Sense - Optical Heart Rate Monitor Armband - ANT+, Dual Bluetooth, Gray, S-L
Check Price On AmazonThe Polar Verity Sense is a flexible alternative among waterproof heart rate monitors, using an optical sensor worn on the upper arm, forearm, or against swim goggles. Its one-button operation, dual Bluetooth connections, and ANT+ support make it suitable for connecting to phones, fitness equipment, and other compatible devices.
Best For: Athletes who want a comfortable optical armband and flexible connectivity without wearing a sensor on the wrist.
Pros:
- Can be worn on the upper arm, forearm, or clipped to goggles.
- Supports ANT+ and two simultaneous Bluetooth connections.
- Can stream heart rate in real time or record a workout for later transfer.
- Includes an armband, charger, and goggle clip.
Cons:
- The supplied notes do not state a waterproof rating or battery runtime.
- Requires a connected device or later phone transfer to review recorded data.
- Optical accuracy depends on placing the sensor snugly against the skin.
The Verity Sense stands out for comfort and placement flexibility. It is a strong fit for multisport users who need broad device compatibility, although buyers specifically seeking a confirmed waterproof rating should verify that detail separately.
Best Long-Battery Chest Strap – GEOID HS500 Heart Rate Monitor
The GEOID HS500 is a practical pick among waterproof heart rate monitors for users who want a connected chest strap with extended battery life. Its IP67 waterproof rating, ANT+ and Bluetooth support, and movement-focused algorithms make it compatible with phones, sports watches, bike computers, treadmills, and fitness apps.
Best For: Runners, cyclists, and indoor-training users who want app connectivity and a replaceable battery with long runtime.
Pros:
- IP67 waterproof construction for exercise in wet conditions.
- Supports ANT+ and Bluetooth connections with a wide range of devices and apps.
- Up to 800 hours of battery life, with a replaceable CR2032 battery.
- LED indicators confirm heart-rate and connection status.
Cons:
- Swimming is not recommended.
- Bluetooth should be connected through the fitness app rather than directly through phone settings.
- Does not include a dedicated display watch.
The HS500 offers a strong balance of connectivity, water resistance, and low-maintenance operation. It is especially appealing for training setups built around a phone, bike computer, sports watch, or compatible fitness app rather than a standalone display.
Best Waterproof Armband – Scosche Rhythm+ 2.0
The Scosche Rhythm+ 2.0 is a practical choice among waterproof heart rate monitors for runners, cyclists, and gym users who prefer an armband over a chest strap. Its optical sensor tracks heart rate in real time, while Bluetooth and ANT+ support broad device compatibility.
Best For: Athletes who want a comfortable, rechargeable armband with HRV support and dual-device connectivity.
Pros:
- IP68 waterproof construction helps withstand sweat, rain, and demanding workouts.
- Bluetooth and ANT+ connectivity works with compatible watches, fitness equipment, and apps.
- Adjustable forearm, bicep, or tricep fit avoids the restrictive feel of a chest strap.
- Offers up to 24 hours of battery life and supports RR interval data for HRV apps.
Cons:
- Requires recharging after up to 24 hours of use.
- HRV features depend on compatible apps and devices.
Choose this model if you want a rugged, lightweight armband with advanced HRV data and flexible Bluetooth/ANT+ pairing. It is especially well suited to regular training sessions where comfort matters as much as connectivity.
Best Heavy-Duty Pick – POWR LABS Heart Rate Monitor
The POWR LABS chest strap is one of the most convenient waterproof heart rate monitors for athletes who want long battery life and broad compatibility. It uses dual Bluetooth and ANT+ connectivity to send heart rate data to devices such as Garmin, Wahoo, Polar, Peloton, and compatible fitness apps.
Best For: Cyclists and endurance athletes who want a comfortable chest strap with a replaceable battery.
Pros:
- IPX67 water and sweat resistance supports intense training and wet conditions.
- Dual Bluetooth and ANT+ pairing works with 400+ fitness apps and compatible devices.
- Replaceable battery provides up to 400 hours of use, according to the supplied notes.
- Soft fabric strap adjusts for a wide range of chest sizes and is designed to reduce chafing.
Cons:
- The strap must be worn before pairing.
- Its chest-strap design may be less appealing than an armband for some users.
- The notes describe it as water resistant and suitable for swimming under a wetsuit, but do not specify a swimming depth or duration.
For frequent training, the standout feature is the low-maintenance battery: you can use the monitor for months without regular charging. Its dual-band connectivity also makes it a versatile pick for multi-device workouts.
Best Rechargeable Waterproof Armband – moofit HW401 Heart Rate Monitor
The moofit HW401 is a compact option among waterproof heart rate monitors, combining an optical armband sensor with Bluetooth and ANT+ connectivity. Its rechargeable design provides up to 20 hours of continuous use for running, cycling, hiking, strength training, and other non-swimming activities.
Best For: Everyday athletes who want an affordable-style rechargeable armband with app and equipment compatibility.
Pros:
- IP67 protection helps keep out sweat and water during exercise.
- Bluetooth and ANT+ support works with apps and equipment such as Wahoo, Strava, and Elite HRV.
- Rechargeable battery provides more than 20 hours of continuous use.
- LED indicators confirm connection status and when a heart rate signal is detected.
Cons:
- It is not suitable for swimming.
- Battery life is shorter than the POWR LABS chest strap’s stated runtime.
- Pairing requires a compatible iOS or Android device and app.
The HW401 makes sense for users who prefer an armband and want to avoid disposable batteries. Its IP67 rating suits sweaty and rainy workouts, but swimmers should choose a monitor specifically designed for pool use.
How We Picked the Best Waterproof Heart Rate Monitors
We focused on monitors with clear water-resistance ratings, reliable heart-rate sensing, and broad compatibility with popular phones, watches, cycling computers, and fitness apps. The selection includes chest straps for responsive, workout-focused tracking and optical armbands for easier wear and quick setup.
We also considered wireless standards, battery design, reported battery life, comfort, adjustability, and practical use cases. Waterproofing varies by model, so always check the manufacturer’s limits before using a device in a pool or shower.
Quick Comparison
| Monitor type | Best for | Common connectivity | Main advantage |
|---|---|---|---|
| Chest strap | Intervals and performance training | Bluetooth and/or ANT+ | Fast, consistent readings |
| Optical armband | Comfort and everyday workouts | Bluetooth and/or ANT+ | Less restrictive than a chest strap |
| Watch-and-strap bundle | All-in-one tracking | Proprietary watch plus sensor | Workout data on the wrist |
Key Buying Factors for Waterproof Heart Rate Monitors
Water-Resistance Rating
Look for an explicit rating such as IP67 or 5ATM. IP ratings generally describe protection from dust and temporary water exposure, while ATM ratings indicate pressure resistance. Neither automatically means every model is suitable for prolonged swimming, so confirm the product’s intended use.
Chest Strap Versus Armband
Chest straps typically respond quickly to rapid intensity changes and are a strong choice for intervals, racing, and structured training. Armbands are often easier to put on and may feel more comfortable during long sessions, though optical sensors can be affected by movement, fit, skin contact, or cold conditions.
Connectivity and Compatibility
Bluetooth is useful for phones, tablets, exercise equipment, and many fitness apps. ANT+ is valuable when pairing with compatible bike computers, watches, or gym equipment. If you use multiple devices at once, choose a monitor that supports the required number of simultaneous connections.
Battery and Maintenance
Compare replaceable-battery models with rechargeable options. Long battery life reduces interruptions, while rechargeable units avoid stocking coin-cell batteries. After sweaty or wet workouts, follow the cleaning and drying instructions to protect the sensor and strap.
Who Should Buy Which Waterproof Heart Rate Monitors?
- For serious training: Choose a chest strap with dependable Bluetooth and ANT+ support for fast changes in heart rate and broad equipment compatibility.
- For comfort: An optical armband is a practical alternative if you dislike wearing a sensor around your chest.
- For Peloton, Strava, or phone workouts: Prioritize Bluetooth support and verify app compatibility before buying.
- For Garmin or cycling computers: ANT+ support can simplify pairing and preserve access to device-specific training data.
- For wet, outdoor workouts: Select a clearly rated waterproof model, but match the rating to your activity rather than assuming every monitor is swim-safe.