Interval training demands fast, dependable heart-rate feedback. The right monitor can help you control warm-ups, hit hard efforts more consistently, and recover between repeats without guessing.
We compared 10 popular chest-strap and armband monitors across accuracy, connectivity, comfort, durability, battery life, and compatibility with watches, bikes, gym equipment, and training apps.
Best 10 Heart Rate Monitor for Interval Training Picks for 2026
Accuracy Pick
- Highly accurate chest-strap heart rate readings
- Bluetooth, ANT+, and 5 kHz connectivity
- Waterproof with up to 400 hours of battery life
Best For: Athletes prioritizing precision and compatibility
Data-Driven Pick
- Tracks real-time heart rate and HRV
- Adds running dynamics with compatible Garmin watches
- Records workouts and syncs with Garmin Connect
Best For: Garmin athletes who want extensive training metrics
Rechargeable Value
- ANT+ and Bluetooth connectivity
- Over 100 hours of rechargeable battery life
- Soft, secure strap with status LEDs
Best For: App-connected interval training with minimal setup
Everyday Garmin Pick
- Real-time heart rate and HRV transmission
- Up to one year of user-replaceable battery life
- Machine-washable strap with 3 ATM water rating
Best For: Routine Garmin-based interval workouts
Comfort-Focused Pick
- Breathable armband alternative to a chest strap
- Bluetooth connects with up to three devices
- 38-hour operation with automatic wear detection
Best For: Bluetooth-based interval workouts where comfort is a priority
Versatile Connectivity Pick
- Bluetooth and ANT+ support
- Compatible with apps, watches, bikes, and gym equipment
- Up to 300 hours with a replaceable battery
Best For: Multi-device interval training across cycling, gym, and fitness platforms
Cross-Platform Armband Pick
- Bluetooth and ANT+ connectivity
- Adjustable forearm, bicep, or tricep placement
- IP68 protection and 24-hour battery life
Best For: Indoor or outdoor intervals across mixed Bluetooth and ANT+ devices
Long-Battery Interval Pick
- ANT+ and Bluetooth connectivity
- 800-hour replaceable-battery life
- IP67 water resistance with LED pairing reminder
Best For: Frequent interval training across phones, watches, and fitness equipment
Comfort-Focused Training Pick
POWR LABS Bluetooth ANT+ Chest Strap
- Works with ANT+, Bluetooth, and 400+ apps
- Soft strap adjusts from 24 to 61 inches
- 400+ hours of replaceable-battery use
Best For: Long sessions across Garmin, Peloton, cycling, and fitness apps
Simple Zone-Training Pick
- Bluetooth and ANT+ heart-rate transmission
- Supports zone, interval, and recovery tracking
- IP67-rated for sweat and rain resistance
Best For: Runners and cyclists using compatible apps or training devices
Accuracy Pick – Polar H10
If precise readings are your priority, the Polar H10 is a strong heart rate monitor for interval training. Its chest-strap design, multiple connection options, waterproof construction, and internal memory make it practical for structured sessions across compatible equipment and apps.
Best For: Athletes who want highly accurate chest-strap readings and broad device compatibility.
Pros:
- Recognized for highly accurate heart rate measurement.
- Supports Bluetooth, ANT+, and 5 kHz connections, including simultaneous connections.
- Waterproof, with internal memory for multiple hours of recording.
- Battery lasts up to 400 hours.
Cons:
- Uses a replaceable CR2025 button-cell battery rather than a rechargeable battery.
- Chest straps may feel less convenient than watch-based sensors for some users.
The Polar H10 is a dependable choice when interval training depends on consistent, detailed heart rate data. Its connectivity range and long battery life add flexibility for gym, outdoor, and app-based workouts.
Data-Driven Pick – Garmin HRM 600
The Garmin HRM 600 is a feature-rich heart rate monitor for interval training, especially for runners and Garmin users. It sends real-time heart rate and HRV data, records workouts when a watch cannot be worn, and adds running metrics with compatible Garmin devices.
Best For: Data-focused athletes using Garmin watches, cycling computers, or Garmin Connect.
Pros:
- Provides real-time heart rate and HRV data.
- Supports running dynamics such as stride length and vertical oscillation with compatible watches.
- Records workouts independently and syncs data to Garmin Connect.
- Machine-washable strap and rechargeable battery with up to two months of life.
Cons:
- Many advanced running metrics require a compatible Garmin smartwatch.
- Its feature set may be more than needed for basic heart rate tracking.
Choose the HRM 600 if you want interval data that extends beyond heart rate. Its independent recording, swim support, and running dynamics make it particularly useful for athletes building a detailed Garmin-based training history.
Rechargeable Value – Wahoo TRACKR
The Wahoo TRACKR is a straightforward heart rate monitor for interval training with a comfortable chest strap and broad wireless connectivity. Its rechargeable battery supports more than 100 hours of active use, while LED indicators help confirm heart rate detection, connection, and battery status.
Best For: Athletes who want a comfortable, rechargeable monitor for phones, equipment, and training apps.
Pros:
- Provides real-time heart rate data for training sessions.
- Connects through both ANT+ and Bluetooth.
- Rechargeable battery offers over 100 hours of active life.
- Slim, soft strap is designed to stay secure during intense exercise.
Cons:
- Listed as one size, offering less sizing flexibility than models with multiple strap sizes.
- Does not list internal workout storage in the supplied specifications.
The TRACKR keeps the essentials simple: accurate live heart rate, dependable wireless connections, and a rechargeable design. It is a practical fit for interval workouts built around a smartphone, fitness equipment, or popular training apps.
Everyday Garmin Pick – Garmin HRM 200
The Garmin HRM 200 is a practical heart rate monitor for interval training when you want accurate live heart rate and HRV data without a long list of advanced features. It works with compatible Garmin devices, fitness equipment, and apps, and its machine-washable strap is designed for routine use.
Best For: Garmin users seeking a durable, low-maintenance monitor for regular interval workouts.
Pros:
- Transmits real-time heart rate and HRV data.
- Compatible with Garmin smartwatches, cycling computers, equipment, apps, and smartphones.
- Offers up to one year of battery life with a user-replaceable battery.
- Machine-washable strap and 3 ATM water rating support regular training.
Cons:
- Uses a replaceable battery rather than a rechargeable battery.
- Does not list independent workout recording or advanced running dynamics.
The HRM 200 suits athletes who want reliable heart rate and HRV transmission with minimal maintenance. Its long battery life, washable strap, and Garmin compatibility make it a sensible everyday training accessory.
Comfort-Focused Pick – COROS Heart Rate Monitor
If you want a heart rate monitor for interval training without the feel of a chest strap, the COROS armband offers a soft, breathable fit and automatic wear detection. It connects by Bluetooth to up to three compatible devices at once, making it practical for watch-, phone-, treadmill-, or indoor-rower-based workouts.
Best For: Athletes who prioritize a comfortable armband and use Bluetooth-compatible training devices.
Pros:
- Soft, breathable fabric band offers an alternative to a chest strap.
- Bluetooth pairing supports up to three devices simultaneously.
- Provides up to 38 hours of operation and automatic power-on when worn.
- Sensor detaches for quicker band cleaning.
Cons:
- Bluetooth only; it is not compatible with ANT+.
- Designed for sports and activities rather than daily heart-rate tracking.
- USB charging cable is included, but a Type-C adapter is not.
The COROS is a strong choice for interval sessions when comfort and multi-device Bluetooth connectivity matter most. Confirm that your training equipment supports Bluetooth before buying.
Versatile Connectivity Pick – COOSPO H6 Chest Strap
The COOSPO H6 is a practical heart rate monitor for interval training if you need broad compatibility across watches, apps, bike computers, and gym equipment. Its Bluetooth and ANT+ connections support multiple device types, while the replaceable CR2032 battery is rated for up to 300 hours.
Best For: Athletes who train across Garmin, Peloton, cycling computers, fitness apps, or ANT+- and Bluetooth-compatible equipment.
Pros:
- Supports both Bluetooth and ANT+ transmission.
- Works with many third-party apps, sports watches, bike computers, and gym machines.
- Offers stated heart-rate accuracy of ±1 BPM during exercise.
- Replaceable battery provides up to 300 hours of use.
Cons:
- The electrode areas should be moistened before use for stable transmission.
- It is not intended for swimming or soaking.
- The sensor should be separated from the strap after each workout.
Choose the H6 when compatibility and long battery life outweigh the convenience of a rechargeable design. Its chest-strap format and dual-mode connectivity suit varied interval-training setups.
Cross-Platform Armband Pick – Scosche Rhythm+ 2.0
The Scosche Rhythm+ 2.0 is a heart rate monitor for interval training that combines an optical armband design with Bluetooth and ANT+ connectivity. Its adjustable strap can be worn on the forearm, bicep, or tricep, while IP68 protection helps it handle sweat, rain, and demanding workouts.
Best For: Runners, cyclists, and gym users who want a flexible armband compatible with both Bluetooth and ANT+ platforms.
Pros:
- Optical sensor provides real-time heart-rate tracking for running, cycling, and gym workouts.
- Bluetooth and ANT+ support broadens compatibility with watches, equipment, and apps.
- Adjustable, breathable strap can be worn on the forearm, bicep, or tricep.
- IP68 waterproof construction is suited to sweat, rain, and intense sessions.
Cons:
- Battery life is rated for up to 24 hours of continuous use.
- It carries a limited one-year warranty.
- Advanced HRV/RR interval features may require compatible apps such as HRV4Training or Morpheus Training.
The Rhythm+ 2.0 is a flexible alternative to a chest strap, particularly for users moving between ANT+ and Bluetooth equipment. Its adjustable placement and weather resistance make it well suited to varied interval workouts.
Long-Battery Interval Pick – GEOID HS500
The GEOID HS500 is a practical heart rate monitor for interval training when you want dual-device compatibility and minimal battery maintenance. Its chest-strap design, ANT+/Bluetooth connectivity, and motion-resistant algorithms provide real-time workout data for running, cycling, fitness, and other activities.
Best For: Athletes who want long battery life, broad app and equipment compatibility, and a visible connection indicator.
Pros:
- Supports both ANT+ and Bluetooth for phones, watches, bike computers, treadmills, and compatible apps.
- Up to 800 hours of battery life with a replaceable CR2032 battery.
- IP67 water resistance and algorithms designed to reduce movement and sweat interference.
- Flashing LED confirms readiness and connection during setup.
Cons:
- Swimming is not recommended.
- Bluetooth pairing should be completed through the fitness app rather than directly through phone settings.
With its especially long stated battery life and wide connection options, the HS500 is well suited to frequent interval sessions where dependable pairing and low upkeep matter.
Comfort-Focused Training Pick – POWR LABS Bluetooth ANT+ Chest Strap
The POWR LABS chest strap is a heart rate monitor for interval training built around broad compatibility and long-session comfort. Dual ANT+/Bluetooth connectivity works with Garmin, Wahoo, Polar, Peloton, cycling computers, smartwatches, and more than 400 fitness apps, while the soft fabric strap is designed to reduce chafing.
Best For: Users who prioritize a comfortable adjustable strap and compatibility with many training devices and apps.
Pros:
- Dual ANT+ and Bluetooth support for a wide range of devices and apps.
- Soft, seamless fabric strap adjusts across a 24–61-inch range.
- Stated ±1 BPM accuracy and real-time heart-rate, variability, and calorie tracking with compatible apps.
- Replaceable battery provides more than 400 hours of stated use.
Cons:
- The monitor must be worn before pairing.
- Although described as water resistant and sweatproof, the supplied notes do not specify an IP67 rating for swimming use beyond the product’s stated capability.
The POWR LABS model makes sense for interval athletes who regularly switch between platforms and want a strap designed for extended training without frequent charging.
Simple Zone-Training Pick – COOSPO H6M
The COOSPO H6M is a straightforward heart rate monitor for interval training, steady runs, cycling, and gym workouts. It sends real-time heart rate data over Bluetooth or ANT+ so you can guide interval intensity, monitor recovery, and follow training zones through a compatible app or device.
Best For: Runners and cyclists who want an uncomplicated chest strap for zone-based workouts and everyday training.
Pros:
- Bluetooth and ANT+ connectivity supports compatible phones, GPS watches, bike computers, and fitness equipment.
- Works with apps and platforms including CoospoRide, Wahoo Fitness, Polar Beat, Zwift, and supported Peloton equipment.
- Soft, adjustable strap is designed for a snug fit during longer sessions.
- IP67 water and dust resistance supports sweaty indoor workouts and rainy outdoor training.
Cons:
- Stated battery life is 300 hours, shorter than some alternatives.
- It is not intended for swimming or prolonged soaking.
- Heart-rate data requires a compatible receiving app or device; the sensor has no standalone workout display.
The H6M is a sensible choice when you want clear zone and interval feedback through an existing phone, watch, bike computer, or fitness platform without adding a dedicated display.
How We Picked the Best Heart Rate Monitor for Interval Training
We focused on monitors that can keep up with repeated changes in intensity and transmit heart-rate data reliably during demanding sessions. Our comparison considers sensor design, ANT+ and Bluetooth support, water resistance, battery or charging convenience, fit, and compatibility with common platforms such as Garmin, Peloton, Zwift, and phone-based fitness apps.
Chest straps generally provide the quickest response during sprints and recovery intervals, while optical armbands can be easier to put on and more comfortable for some users. The best choice depends on both workout demands and how consistently you will wear it.
Quick Comparison
| Type | Best For | Connectivity | What to Check |
|---|---|---|---|
| Chest strap | Maximum responsiveness and accuracy | Usually ANT+ and Bluetooth | Fit, electrode contact, battery access |
| Optical armband | Comfort and easy everyday use | ANT+ and/or Bluetooth | Placement, workout movement, charging |
Key Buying Factors for a Heart Rate Monitor for Interval Training
Accuracy and Response Time
Choose a chest strap if precise readings during short sprints, repeated climbs, or rapidly changing recovery periods are your top priority. Armbands can work well, but movement, loose fit, and skin contact may affect optical readings.
Connectivity and Device Support
ANT+ is useful for bike computers, watches, and gym equipment, while Bluetooth is convenient for phones and many training apps. Dual-band support gives you more flexibility, but confirm that the monitor can connect to the devices you actually use.
Fit, Comfort, and Durability
A strap should sit securely without restricting breathing or sliding during hard efforts. Look for adjustable sizing, washable materials, and water resistance if you train outdoors, sweat heavily, or swim. An armband should remain stable without feeling tight.
Battery and Maintenance
Consider whether you prefer a replaceable coin cell or a rechargeable design. Long battery life reduces interruptions, but regular cleaning and drying are equally important for reliable electrode contact and longer strap life.
Who Should Buy Which Heart Rate Monitor for Interval Training?
Choose the Polar H10 or another quality chest strap if you want highly responsive data for structured intervals, running, cycling, or performance testing.
Choose a Garmin HRM model if you already use Garmin equipment and want straightforward ecosystem compatibility. Check the specific model’s features before buying.
Choose the Wahoo TRACKR or a dual-protocol alternative if you train across phones, bike computers, and multiple apps and value broad connectivity.
Choose the COROS or Scosche armband if chest straps feel uncomfortable and you prefer a quick, less restrictive setup.
Choose a COOSPO, GEOID, or POWR LABS monitor if you want core ANT+ and Bluetooth tracking at a lower price. Verify app and equipment compatibility before ordering, especially for specialized gym hardware.