10 Best Heart Rate Monitors for Interval Training in 2026

Interval workouts demand fast, dependable heart-rate feedback so you can push hard during work periods and recover with confidence. The right monitor should pair reliably with your watch, bike computer, phone, or training app without distracting from the session.

We compare 10 leading chest-strap and armband options, focusing on accuracy, connectivity, comfort, battery life, water resistance, and compatibility across popular training platforms.

Best 10 Heart Rate Monitor for Interval Training Picks for 2026

Reliable Basics – Garmin HRM-Dual

The Garmin HRM-Dual is a straightforward heart rate monitor for interval training when you want dependable chest-strap readings without frequent charging. Its adjustable soft strap is washable after removing the sensor, and the user-replaceable battery lasts up to 3.5 years.

Best For: Athletes who want a low-maintenance chest strap for compatible smartphones and training equipment.

Pros:

• Soft, adjustable strap is designed for comfortable wear.
• Sensor module can be removed so the strap can be washed.
• User-replaceable CR2032 battery lasts up to 3.5 years.

Cons:

• Offers fewer advanced training features than newer Garmin models.
• Compatibility is listed for smartphones, so device support should be checked before purchase.

The HRM-Dual is a practical choice for interval sessions where simplicity and long battery life matter more than running dynamics or onboard workout recording.

Advanced Training Data – Garmin HRM 600

The Garmin HRM 600 is a data-focused heart rate monitor for interval training, sending real-time heart rate and HRV data to compatible Garmin devices, equipment, and apps. It also supports running dynamics, workout recording when you cannot wear a watch, and swim activity data.

Best For: Data-driven athletes who use compatible Garmin devices and want expanded running, indoor, team-sport, or swim metrics.

Pros:

• Provides real-time heart rate and HRV data.
• Supports running dynamics such as stride length and ground contact time balance with a compatible smartwatch.
• Can record workouts without a watch and sync data to Garmin Connect.
• Machine-washable strap is offered in two sizes.

Cons:

• Two-month rechargeable battery life requires more frequent charging than battery-powered alternatives.
• Many advanced metrics require compatible Garmin equipment.

The HRM 600 is the most feature-rich option here for athletes building structured, data-heavy workouts, provided their devices support its expanded functionality.

Highly Compatible Accuracy – Polar H10

The Polar H10 is a versatile heart rate monitor for interval training, with Bluetooth, ANT+, and 5 kHz connectivity for a broad range of compatible equipment. It is fully waterproof, includes internal memory for multiple hours, and is widely recognized for precise measurement.

Best For: Athletes who need accurate readings and flexible connections across smartphones, tablets, computers, and compatible fitness equipment.

Pros:

• Supports Bluetooth, ANT+, and 5 kHz connections.
• Can use Bluetooth and ANT+ simultaneously, or connect to two Bluetooth devices simultaneously.
• Waterproof design includes internal memory for multiple hours.
• Polar Pro strap uses improved electrodes and silicone dots for a secure fit.

Cons:

• Battery life is listed at approximately 400 hours, shorter than the longest-lasting Garmin option.
• Requires the specified CR2025 battery; other sizes may damage or malfunction the sensor.

The H10 stands out when connection flexibility and measurement precision are priorities, especially for interval workouts shared across different devices or platforms.

Durable Everyday Training – Garmin HRM 200

The Garmin HRM 200 is a durable heart rate monitor for interval training that transmits real-time heart rate and HRV data to compatible Garmin devices, fitness equipment, and apps. Its machine-washable strap, 3 ATM water rating, and user-replaceable battery support regular training use.

Best For: Garmin users who want essential heart rate and HRV tracking with durable construction and up to one year of battery life.

Pros:

• Transmits real-time heart rate and HRV data.
• Strap is machine washable and available in two sizes.
• User-replaceable battery lasts up to one year.
• 3 ATM water rating adds durability for everyday training.

Cons:

• Does not list the advanced running dynamics or workout recording features of the HRM 600.
• Compatibility is centered on Garmin devices, equipment, apps, and smartphones.

The HRM 200 offers a balanced middle ground for structured intervals: more current functionality than a basic strap, while keeping maintenance simple and practical.

Best for Comfortable Sports Workouts – 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 optical heart rate tracking. Its wear detection, multi-device Bluetooth connectivity, and 38-hour battery make it practical for repeated sports sessions.

Best For: Athletes who prioritize a comfortable armband for interval workouts and other sports activities.

Pros:

• Soft, breathable band designed for comfortable sports use.
• Wear detection can power the monitor on and off automatically.
• Can connect to up to three Bluetooth devices at once.
• Offers up to 38 hours of operation per charge.

Cons:

• Bluetooth-only connectivity; it does not support ANT+.
• Designed for sports and activities rather than daily heart rate tracking.
• The listed large band fits 9.4 to 16.9-inch arms.

The COROS is a strong choice when comfort and simple workout readiness matter most. Confirm the band size and Bluetooth compatibility with your training equipment before buying.

Best Traditional Chest-Strap Value – Polar H9 Heart Rate Sensor

The Polar H9 is a practical heart rate monitor for interval training if you prefer a conventional chest strap and broad equipment compatibility. Its high-accuracy sensor, smartphone connections, and approximately 400-hour battery life support frequent workouts without regular recharging.

Best For: Everyday exercisers who want a dependable chest-strap sensor with long battery life and wide compatibility.

Pros:

• Uses Polar’s high-accuracy heart rate sensors.
• Works with HRM-compatible equipment and popular smartphone apps.
• Approximately 400 hours of battery life from a CR2025 cell.
• Available in an XS-S or M-XXL strap size range.

Cons:

• Requires a chest strap rather than an armband-style fit.
• Uses a CR2025 battery; other battery sizes may damage or malfunction the sensor.
• Size selection is important, especially for users outside the listed ranges.

Choose the H9 if long battery life and traditional chest-strap placement are more important than a rechargeable design. Its compatibility-focused approach makes it a sensible option for varied training setups.

Best for ANT+ and Bluetooth Flexibility – Scosche Rhythm+ 2.0

For interval training across gym equipment, watches, and fitness apps, the Scosche Rhythm+ 2.0 combines optical heart rate tracking with both ANT+ and Bluetooth connectivity. Its adjustable armband, IP68 waterproof rating, and 24-hour battery are suited to demanding indoor and outdoor workouts.

Best For: Athletes who need flexible device pairing and a secure alternative to a restrictive chest strap.

Pros:

• Supports both Bluetooth and ANT+ connections.
• Adjustable band can be worn on the forearm, bicep, or tricep.
• IP68 waterproof construction suits sweat, rain, and intense sessions.
• HRV mode captures RR interval data for compatible training apps.

Cons:

• Battery life is up to 24 hours, shorter than some listed alternatives.
• Includes a one-year warranty rather than a two-year warranty.
• HRV features depend on compatible apps and platforms.

The Rhythm+ 2.0 is the most versatile pick here for athletes switching between ANT+ equipment and Bluetooth apps. It is particularly appealing if you want an armband that remains usable in varied training environments.

Reliable Dual-Protocol Pick – COOSPO H6 Chest Strap

If you want a dependable heart rate monitor for interval training, the COOSPO H6 delivers real-time heart rate data through both Bluetooth and ANT+ connections. Its broad app, watch, bike computer, and gym-equipment compatibility makes it practical for structured workouts across multiple platforms.

Best For: Athletes who train with Peloton, cycling computers, sports watches, or third-party fitness apps.

Pros:

• Bluetooth and ANT+ support enables connection to multiple compatible devices.
• Works with apps including Strava, Wahoo Fitness, Polar Beat, Zwift, and Runtastic.
• IP67 protection supports rainy-day training and sweaty workouts.
• Replaceable CR2032 battery provides up to 300 hours of use.

Cons:

• It is not intended for swimming or soaking.
• The electrode areas should be moistened before use for stable transmission.
• You need to pair it through the fitness app rather than the phone’s Bluetooth settings.

The H6 is a versatile chest-strap option when compatibility matters. Its dual wireless modes and support for gym equipment make it especially useful for interval sessions that move between indoor training apps and wearable devices.

Comfort-First Training Choice – POWR LABS Chest Strap

The POWR LABS chest strap is a strong heart rate monitor for interval training when comfort and broad connectivity are priorities. It pairs over Bluetooth or ANT+ with Garmin, Wahoo, Polar, Peloton, cycling computers, smartwatches, and more than 400 fitness apps.

Best For: Long training sessions where a soft, adjustable strap and extended battery life are important.

Pros:

• Dual Bluetooth and ANT+ connectivity supports a wide range of devices and apps.
• Soft, seamless fabric is designed to reduce chafing and slipping.
• Adjustable fit accommodates a 24- to 61-inch range according to the product notes.
• Replaceable battery provides more than 400 hours of training use.

Cons:

• The strap must be worn before pairing.
• Although described as water resistant and sweatproof, the supplied details are inconsistent about swimming use.
• As with other chest straps, compatibility depends on the device or app being used.

For repeated intervals, the POWR LABS model emphasizes low-maintenance operation and comfort. Its long battery life and dual-protocol support make it a convenient choice for athletes who train frequently across several platforms.

Long-Battery Feedback Pick – GEOID HS500 Chest Strap

The GEOID HS500 combines quick connection feedback with extended battery life, making it a practical heart rate monitor for interval training. Its flashing LED confirms readiness and connection, while ANT+ and Bluetooth support cover phones, watches, bike computers, treadmills, and compatible training apps.

Best For: Athletes who want visible connection confirmation and minimal battery maintenance during cycling, running, or fitness workouts.

Pros:

• LED feedback helps confirm that the sensor is ready and connected.
• ANT+ and Bluetooth compatibility supports numerous apps and training devices.
• Up to 800 hours of battery life with a replaceable CR2032 battery.
• IP67 protection and movement-focused algorithms are designed for exercise conditions.

Cons:

• Swimming is not recommended.
• Bluetooth pairing should be completed through the app rather than directly through phone settings.
• The LED turns off after flashing 10 times, so it is primarily a startup confirmation.

The HS500 stands out for its 800-hour battery rating and straightforward visual status cue. It is a sensible option for interval athletes who want a chest strap that can remain installed and ready across months of regular training.

How We Picked the Best Heart Rate Monitor for Interval Training

We focused on monitors suited to repeated changes in effort, where responsive readings and a stable connection matter more than extra smartwatch features. The lineup includes chest straps and optical armbands from Garmin, Polar, COROS, Scosche, COOSPO, POWR LABS, and GEOID.

Our comparisons emphasize sensor consistency, ANT+ and Bluetooth support, app and equipment compatibility, wearing comfort, battery design, water resistance, and practical ownership costs. A strong Heart Rate Monitor for Interval Training should deliver useful readings without requiring constant adjustment between sprints, climbs, or recovery periods.

Quick Comparison

Monitor Type	Best For	Main Advantage
Chest strap	Highest workout responsiveness	Usually provides the most dependable readings during rapid intensity changes
Optical armband	Comfort and easy wear	Less restrictive than a chest strap while remaining more stable than many wrist sensors
ANT+ and Bluetooth models	Multi-device training	Connects with watches, cycling computers, phones, and fitness equipment

Key Buying Factors for a Heart Rate Monitor for Interval Training

Sensor Accuracy and Response

Chest straps generally respond quickly to short work intervals and recovery phases. They are often the safest choice for structured running, cycling, rowing, and HIIT sessions. Armbands can be more comfortable and may perform well for many users, but fit and skin contact are especially important.

Connectivity

Check whether your training device requires ANT+, Bluetooth, or both. Dual-protocol monitors offer more flexibility when switching among a sports watch, phone, indoor bike, and gym equipment. Also verify whether the sensor supports simultaneous connections if you want to record on two devices.

Fit, Comfort, and Durability

A strap should stay in place without becoming difficult to breathe in. Look for an adjustable band, washable materials, and a secure sensor pod. Water resistance is useful for sweaty workouts, outdoor training, and cleaning after use; it does not always mean the monitor is designed for swimming.

Battery and Maintenance

Consider whether you prefer a replaceable coin cell or a rechargeable design. Long battery life reduces interruptions, while removable sensors make some straps easier to wash and replace. Follow the manufacturer’s cleaning and storage instructions to protect electrodes and contacts.

Who Should Buy Which Heart Rate Monitor for Interval Training?

• Choose a premium chest strap if precise interval timing, broad compatibility, and dependable data are your top priorities.
• Choose a basic chest strap if you want accurate heart-rate tracking without paying for advanced analytics or onboard storage.
• Choose an optical armband if chest straps feel restrictive or you prioritize quick, comfortable placement.
• Choose dual ANT+ and Bluetooth connectivity if you train across multiple devices or use both indoor and outdoor platforms.
• Choose a budget monitor if you mainly need live heart-rate data for one compatible phone, watch, or fitness machine.

Before buying, confirm the monitor’s protocol, strap sizing, replacement-band availability, and compatibility with your exact training app or equipment. For the most demanding interval sessions, prioritize a secure fit and responsive sensor over extra features you will not use.