10 Best Heart Rate Monitors for Interval Training in 2026: Accurate Picks for Every Workout

Interval training demands timely heart rate data. The right monitor can help you identify effort changes quickly, manage recovery, and stay within the intended training zone without relying on guesswork.

This roundup compares 10 heart rate monitors across chest-strap and armband designs, with attention to accuracy, connectivity, comfort, water resistance, battery life, and compatibility with popular fitness devices.

Best 10 Heart Rate Monitor for Interval Training Picks for 2026

Most Versatile Pick – Polar H10

The Polar H10 is a strong choice if you want a highly accurate heart rate monitor for interval training that can connect to a wide range of compatible equipment. Its chest strap supports Bluetooth, ANT+, and 5 kHz connections, making it practical for gym machines, phones, tablets, and other compatible devices.

Best For: Athletes who prioritize accuracy, broad compatibility, and dual-device connectivity.

Pros:

• Recognized for highly accurate heart rate measurement.
• Supports Bluetooth, ANT+, and 5 kHz connections.
• Can use Bluetooth and ANT+ simultaneously, plus two Bluetooth connections at once.
• Waterproof design with internal memory for multiple hours of data.

Cons:

• Uses a chest strap, which some users may find less comfortable than an armband.
• Requires a CR2025 battery rather than a rechargeable battery.

With its extensive connectivity and waterproof construction, the Polar H10 is especially well suited to interval workouts that move between equipment or require dependable readings across multiple devices.

Advanced Training Pick – Garmin HRM 600

The Garmin HRM 600 is designed for data-focused athletes seeking a heart rate monitor for interval training with real-time heart rate and HRV data. It also records workouts when you cannot wear a watch and adds running metrics when paired with a compatible Garmin smartwatch.

Best For: Garmin users who want detailed running data, workout recording, and rechargeable convenience.

Pros:

• Sends real-time heart rate and HRV data to compatible devices and apps.
• Provides running dynamics such as stride length and ground contact time balance with a compatible smartwatch.
• Can record workouts without a watch and sync them to Garmin Connect.
• Offers a machine-washable strap and up to two months of battery life.

Cons:

• Some advanced running metrics require a compatible Garmin smartwatch.
• Its feature set may be more than needed for basic heart rate tracking.

The HRM 600 is a compelling option for structured interval runners who want more than pulse data, particularly those already using Garmin Connect and compatible Garmin devices.

Most Comfortable Armband – COROS Heart Rate Monitor

The COROS Heart Rate Monitor offers an armband alternative for anyone who prefers not to wear a chest strap during interval training. Its soft, breathable band connects by Bluetooth to up to three devices at once and automatically powers on when worn.

Best For: Athletes who want a comfortable, easy-clean armband for sports and workouts.

Pros:

• Soft, breathable armband designed for comfortable wear.
• Can pair with up to three Bluetooth devices simultaneously.
• Wear detection automatically powers the monitor on and off.
• Provides 38 hours of operation and up to 80 days of standby time per charge.

Cons:

• Bluetooth only; it is not compatible with ANT+.
• Designed for sports and activities rather than daily heart rate tracking.
• Does not include a Type-C power adapter.

The COROS monitor makes sense for interval trainees who value comfort and quick setup. Confirm that your watch, trainer, or app supports Bluetooth before choosing it, especially if ANT+ is part of your current setup.

Best Battery Life – Garmin HRM 200

The Garmin HRM 200 is a straightforward heart rate monitor for interval training that delivers real-time heart rate and HRV data to compatible Garmin devices, fitness equipment, and apps. Its user-replaceable battery lasts up to a year, reducing the need for frequent charging.

Best For: Garmin users who want reliable heart rate and HRV tracking with long battery life.

Pros:

• Transmits real-time heart rate and HRV data.
• Offers up to one year of battery life.
• Uses a user-replaceable battery for convenient maintenance.
• Includes a machine-washable strap and 3 ATM water rating.

Cons:

• Advanced compatibility is centered on Garmin devices, fitness equipment, and supported apps.
• Uses a replaceable battery rather than a rechargeable design.

The HRM 200 is a practical pick for repeated interval sessions when you want accurate training data without managing frequent recharging. Its durable, washable strap also suits regular use.

Best Armband Pick – Scosche Rhythm+ 2.0

If you want a comfortable heart rate monitor for interval training without wearing a chest strap, the Scosche Rhythm+ 2.0 uses optical sensing and a secure armband design. Bluetooth and ANT+ support make it suitable for watches, fitness equipment, and training apps.

Best For: Runners, gym users, and cyclists who prefer an adjustable forearm, bicep, or tricep fit.

Pros:

• Supports both Bluetooth and ANT+ connections.
• Lightweight, breathable strap stays secure during intense workouts.
• Offers up to 24 hours of battery life and IP68 water resistance.
• HRV mode can stream RR interval data to compatible apps.

Cons:

• Its 24-hour battery life is shorter than the chest-strap alternatives here.
• Optical armband sensing may not suit users who specifically prefer ECG chest sensing.

The Rhythm+ 2.0 is a flexible choice for interval sessions when comfort and broad device compatibility matter more than maximum battery life.

Best Long-Battery Pick – Wahoo TRACKR HEART RATE

The Wahoo TRACKR is a heart rate monitor for interval training built around ECG chest sensing, dual wireless connectivity, and a rechargeable battery designed for extended use. It can connect to smartphones, fitness equipment, apps, and accessories through Bluetooth or ANT+.

Best For: Athletes who want a secure chest strap and long rechargeable battery life for frequent training.

Pros:

• ECG chest sensor provides real-time heart rate data.
• Offers Bluetooth and ANT+ connectivity with up to three Bluetooth connections at once.
• Rechargeable battery provides over 100 hours of active life according to the product highlights.
• LED indicators show heart rate detection, battery status, and connection status.

Cons:

• Chest-strap design may feel less convenient than an armband for some users.
• The supplied details list differing battery figures, so exact runtime may vary.

Choose the TRACKR if you prioritize ECG chest sensing, stable multi-device connections, and fewer charging interruptions during a regular interval-training schedule.

Best Value Chest Strap – COOSPO H6 Heart Rate Monitor

The COOSPO H6 is a practical heart rate monitor for interval training, offering dual Bluetooth and ANT+ transmission for sports watches, bike computers, gym equipment, and popular fitness apps. Its replaceable CR2032 battery is designed for extended use.

Best For: Cyclists and budget-conscious athletes who need broad compatibility with training devices and apps.

Pros:

• Provides claimed ±1 BPM real-time heart rate data.
• Works with Bluetooth and ANT+ devices, including many watches and bike computers.
• Compatible with equipment such as Peloton, Concept2, NordicTrack, and other listed systems.
• Offers up to 300 hours of use with a replaceable CR2032 battery.

Cons:

• The strap electrodes should be moistened before use for stable transmission.
• It is IP67-rated for sweat and rain but should not be used for swimming or soaked.
• The sensor and strap should be separated after each workout.

The H6 stands out for device compatibility and long battery life, making it a useful chest-strap option for interval workouts across cycling, gym, and app-based training.

Long-Battery Chest Strap – HS500 Heart Rate Monitor

For interval training, the GEOID HS500 combines a chest-strap fit with ANT+ and Bluetooth connectivity, making it a practical choice for tracking heart rate across phones, watches, bike computers, treadmills, and training apps. Its redesigned hardware and algorithms are intended to reduce movement and sweat interference during exercise.

Best For: Runners, cyclists, and gym users who want a connected chest strap with very long battery life.

Pros:

• Offers up to 800 hours of battery life with a replaceable CR2032 battery.
• Supports both ANT+ and Bluetooth connections for broad device and app compatibility.
• IP67 water resistance and a flashing LED provide workout-ready feedback.
• Includes a one-year limited warranty and 24/7 online customer service.

Cons:

• Swimming is not recommended.
• Bluetooth pairing should be completed through the app rather than directly through the phone’s Bluetooth settings.

The HS500 stands out for interval sessions where dependable connectivity and minimal battery maintenance matter. Its chest-strap design and claimed interference-reducing algorithms make it a strong all-around option for repeated training sessions.

Zone-Tracking Armband – COOSPO HW807 Heart Rate Monitor

The COOSPO HW807 is a useful heart rate monitor for interval training when you prefer an armband over a chest strap. Its optical sensor is designed to provide real-time readings, while color-coded LEDs help show heart-rate zones during workouts.

Best For: Users who want visible heart-rate-zone feedback and broad compatibility with fitness equipment and apps.

Pros:

• Claims ±1 BPM accuracy during exercise and supports continuous real-time monitoring.
• Color LED indicators make training-zone status easier to see at a glance.
• Works with Bluetooth 5.0 and ANT+ devices, including Peloton, Garmin, Wahoo, Strava, and compatible gym equipment.
• IP67 rated and offers up to 20 hours of battery life per charge.

Cons:

• It is not recommended for swimming.
• Its 20-hour battery life requires more frequent charging than long-life chest-strap alternatives.

For interval workouts built around changing intensity zones, the HW807’s LED feedback can be especially convenient. Choose it if an armband fit and app or equipment compatibility are more important to you than extended battery life.

Comfort-Focused Chest Strap – POWR LABS Bluetooth ANT+ Monitor

The POWR LABS chest strap is a practical heart rate monitor for interval training if you want dual-band connectivity and a soft, adjustable fit. It syncs with Garmin, Wahoo, Polar, Peloton, cycling computers, smartwatches, and more than 400 fitness apps.

Best For: Athletes who want a comfortable, broadly compatible chest strap for frequent training.

Pros:

• Dual ANT+ and Bluetooth connectivity supports a wide range of devices and apps.
• Soft, seamless fabric is designed to reduce chafing during longer sessions.
• Provides more than 400 hours of battery life with a replaceable battery included.
• IPX67 sweatproof and water-resistant construction is suited to demanding workouts.

Cons:

• The strap must be worn before pairing.
• Supplied details list differing strap-fit measurements, so buyers should confirm sizing.

The POWR LABS model is a solid value-oriented choice for athletes who train often and use several devices. Its combination of claimed ±1 BPM accuracy, dual connectivity, and long battery life suits repeated interval sessions without frequent charging.

How We Picked the Best Heart Rate Monitor for Interval Training

We focused on the features that matter most when effort changes rapidly: responsive heart rate tracking, dependable sensor contact, broad device compatibility, and a secure fit during running, cycling, rowing, and gym workouts. We also considered whether each monitor supports ANT+, Bluetooth, or both, since connection options determine which watches, phones, bike computers, and training apps it can use.

Chest straps generally provide the most consistent readings during intense intervals because they sit close to the heart and respond quickly to changes in effort. Armbands can be more comfortable and convenient, especially for users who dislike chest straps, though fit and skin contact have a greater effect on optical sensor performance.

Quick Comparison

Type	Best For	Connection Priorities
Chest strap	Maximum responsiveness and interval accuracy	ANT+ and Bluetooth
Armband	Comfort and easy daily wear	Bluetooth, ANT+, or dual-band support
Water-resistant sensor	Sweat-heavy training and outdoor workouts	IP rating or waterproof construction
Long-battery model	Frequent training with minimal maintenance	Replaceable or rechargeable battery

Key Buying Factors for a Heart Rate Monitor for Interval Training

Accuracy and Response Time

Choose a chest strap if precise zone changes, short sprints, and recovery intervals are central to your workouts. Optical armbands are a practical alternative when comfort matters more than absolute consistency.

Compatibility

Check whether your watch, bike computer, smart trainer, phone, or app supports ANT+, Bluetooth, or both. Dual connectivity is the most flexible choice for switching between devices.

Fit and Comfort

A strap should remain secure without restricting breathing. For armbands, position the sensor firmly on the upper arm and follow the manufacturer’s placement guidance. Poor contact can cause dropouts or delayed readings.

Durability and Battery Life

Sweat and rain resistance are important for repeated training. Compare battery claims, charging or replacement requirements, and whether the sensor can be rinsed after workouts.

Who Should Buy Which Heart Rate Monitor for Interval Training?

Choose a chest strap if you train by heart rate, perform frequent high-intensity intervals, or need the fastest response possible. The Polar H10, Garmin HRM models, Wahoo TRACKR, COOSPO H6, HS500, and POWR LABS options fit this category.

Choose an armband if you want a less restrictive design for gym sessions, cycling, or everyday workouts. The COROS, Scosche Rhythm, and COOSPO HW807 are better suited to users who prioritize wearability while still needing external heart rate data.

Choose dual-band connectivity if you use multiple training platforms. ANT+ and Bluetooth support makes it easier to pair with fitness watches, phones, Peloton-style equipment, and cycling apps. Before buying, confirm the monitor’s supported profiles and your preferred device’s connection requirements.