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Polar H9 Heart Rate Sensor

4.3 4.3 out of 5 stars 7,175 ratings

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About this item

  • 38% Polyamide, 29% Polyurethane, 20% Elastane, 13% Polyester
  • Made in the USA or Imported
  • POLAR PRESENTS A NEW AFFORDABLE HRM: When you're looking for a reliable high quality heart rate monitor for your everyday sports, Polar H9 is a trusted choice of HR sensor that fulfills all your needs.
  • GOLD STANDARD IN HEART RATE TRACKING: Built on decades of scientific research and development, recognized by both regular users and researchers around the globe, Polar is proud to be the Gold Standard in HR tracking.
  • EXCELLENT CONNECTIVITY OPTIONS: Polar H9 connects to sports and smart watches (Polar, Garmin, Wahoo, Zwift, Peloton), activity trackers, gym equipment and other Bluetooth and ANT+ devices.
  • NOW YOUR CARDIO WORKOUTS ARE MORE EFFECTIVE: From gym to indoor cycling via jogging and group exercise, track your heart rate and get an accurate calorie burn. Choose you size: XS-S: 20" - 26", M-XXL: 26” - 36”
  • TURN YOUR PHONE INTO A FITNESS TRACKER: Enjoy endless connection possibilities to Polar Beat, Polar Club, Peloton, Nike+ Run Club and other popular fitness and training apps.

From the brand


From the manufacturer

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Please note there is a protective film over the HR sensor, please remove prior to use.

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Train with Polar Beat or other fitness app

For a full Polar H9 experience, connect your heart rate monitor to Polar Beat, our free fitness and training app or any other compatible fitness app. Just choose the one that best fits your needs and turn your phone into a fitness tracker easily.

Polar H9 (Bluetooth & ANT+)

Heart Rate Sensor

Polar H9 is a high quality heart rate sensor for your favorite everyday sports. Bluetooth & ANT+ technologies ensure connections to top fitness apps, sports and smart watches, gym equipment and other training devices. Get reliable calories and heart rate thanks to chest strap measurement.

  • Third party app compatibility
  • Reliable heart rate measurement
  • Bluetooth Low Energy, ANT+ and 5 kHz connections
  • Several connections can be active simultaneously
  • Accurate calorie burn
  • Battery life 400 hours
  • Waterproof up to 30m
  • Machine-washable textile strap

Key Features

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Reliable and real-time heart rate monitoring

Polar H9 is an ideal jack-of-all-trades sensor for all your everyday sports. Get a reliable live heart rate and calorie consumption on any device you use.

Connectivity: Third-party apps

Bluetooth and ANT+ technologies open up endless connection possibilities to your favourite training app on both iOS and Android phones, sports and smart watches, gym equipment, bike computers and more. All you need to do is get connected & get going.

Polar Soft Strap

Polar H9 comes with the Polar Soft Strap and tracks your heart rate reliably. Polar Soft Strap machine-washable.

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Accurate calorie burn

When you train with a heart rate monitor, you’ll know how hard your body is working and have access to valuable training data, such as burned calories. With Polar H9 you get an accurate calorie burn from all your workouts including strength training, running, cycling, yoga, walking, etc.

Polar H9 & Polar Beat app

Turn your phone into a fitness tracker with Polar H9 and Polar Beat, our free fitness and training app to get accurate calorie burn and real-time heart rate on the screen of your phone during your workout.

#PolarH9

Polar is the premier choice in heart rate monitors for athletes of all levels. Join the Polar community and share your experiences on Amazon or social media.

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Polar H9 Polar H10 Polar Verity Sense
Customer Reviews
4.3 out of 5 stars
7,175
4.3 out of 5 stars
20,087
4.2 out of 5 stars
2,682
HR measurement method ECG ECG Optical Heart Rate (6-LED)
Product placement Chest Chest Arm and temple
Operation time 400h (replaceable battery) 400h (replaceable battery) 30h
Rechargeable
Compatible with 3rd party apps
Built-in memory 1 training session Up to 600h HR training
ANT+ and Bluetooth Low Energy connectivity
Dual Bluetooth channels
5 kHz transmission (Gymlink)
Waterproof 30 m 30 m 50 m

Product Description

New Polar H9 Heart Rate Sensor Out Now!

Polar H9 is the ideal jack-of-all-trades sensor for all your everyday sports. Get reliable calories and heart rate thanks to chest strap measurement. Battery life is 400 hours.

Polar H9 heart rate monitor works not only with Polar Beat app and many 3rd party apps, but also with a large variety of sports watches, cycling devices and gym equipment. This is due to Bluetooth, ANT+ and 5 kHz technologies, which can also be active simultaneously.

Get Reliable Heart Rate Tracking for All Your Everyday Sports Now.

Choose you size:

XS-S: 20 inches - 26 inches

M-XXL:

26 inches - 36 inches

Please note, there is a protective film over the HR sensor, please remove prior to use.

Product information

Technical Details

Additional Information

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Customer reviews

4.3 out of 5 stars
4.3 out of 5
7,175 global ratings

Customers say

Customers like the accuracy of the biometric monitor. They say it's the most accurate HRM they've ever used. They appreciate the comfort of the device. However, some customers disagree on performance, connectivity, quality, heart rate, ease of use, and value.

AI-generated from the text of customer reviews

75 customers mention59 positive16 negative

Customers like the accuracy of the biometric monitor. They say it is the most accurate HRM they have ever used, and provides consistent readings. They also appreciate the accuracy and consistency of the chest strap and sensor. Customers also say that the readings now match effort level much more closely than previous devices.

"...The important art is the monitor is accurate. i have tested its readings against the equipment of my oximeter...." Read more

"...This basic offering from Polar gets the job done and seems to be accurate (but how would I know without several other devices to compare it to?)..." Read more

"...any issues with it connecting to my exercise bike and appears to provide accurate results...." Read more

"...But a year later when I started seriously road running it was very inconsistent...." Read more

54 customers mention40 positive14 negative

Customers like the comfort of the biometric monitor. They say the strap is soft and barely noticeable after a few minutes. They also say the connection is immediate, smooth, and reliable. Some customers also mention that the product fits fine and is 49" in size.

"Product is performing well. It's comfortable and was more affordable than other competitors...." Read more

"...Good sensor, comfortable, replaceable strap, good battery life, durable enough for my needs (running).Cons:..." Read more

"...This chest strap has been much more reliable so far. And it’s pretty comfortable, I often forget it’s there. No drama. Nothing exciting...." Read more

"...I like it but there are a few quirks. 1 - It feels a tad odd when it's on you...." Read more

209 customers mention128 positive81 negative

Customers are mixed about the performance of the biometric monitor. Some mention that it has been working well for them, the band is comfortable, and the transmitter functions great. However, others say that it's sketchy, inconsistent, and sometimes wouldn't work until they started to sweat. They also say that the sensor did not work from the first time they took it out of the package.

"Works great, very reliable, good battery life - 5 months/135 hours of use before the first battery change...." Read more

"...I got so frustrated with it not working when I needed it to. I took a hammer to it and threw it in the trash...." Read more

"...available POLAR fitness app, but it appears to be fairly well designed for guiding workouts and tracking fitness...." Read more

"...This is much better than the fitness app in my smart watch...." Read more

145 customers mention54 positive91 negative

Customers are mixed about the connectivity of the biometric monitor. Some mention that it connects and stays connected to gym, their iPhone every time, and seamlessly links to their phone and smart watch without any interruptions. Others say that it doesn't always connect well with Apple products, it keeps dropping connection, and that it keeps trying to connect to exercise machines or mobile devices.

"...What a mistake that was! The Duo was highly unreliable, kept dropping connection, etc. I sent it back and purchased this H9 sensor instead. Voila!..." Read more

"...It automatically connects to my treadmill and elliptical and tracks my heart rate accurately compared to taking my pulse...." Read more

"...Otherwise, if you leave it attached, it keeps trying to connect to exercise machines or mobile devices." Read more

"...the batteries 2-3x already and every time I change, it somehow screws up my pairings with the polar apps and/or Strava...." Read more

120 customers mention51 positive69 negative

Customers are mixed about the quality of the biometric monitor. Some mention it works great, is very reliable, and is sturdily constructed. However, others say that it became unreliable and unusable for them, and that the product isn't built to last.

"...What a mistake that was! The Duo was highly unreliable, kept dropping connection, etc. I sent it back and purchased this H9 sensor instead. Voila!..." Read more

"Works great, very reliable, good battery life - 5 months/135 hours of use before the first battery change...." Read more

"...You have to pair it WITH THE APP, NOT your phone! If you pair it with your phone the app will not see it, at least as far as I can tell...." Read more

"Pros:Good sensor, comfortable, replaceable strap, good battery life, durable enough for my..." Read more

59 customers mention33 positive26 negative

Customers are mixed about the heart rate of the product. Some mention that it tracks their heart rate accurately, and the reading is immediate. That said, others say that it stops showing heart rate and that it consistently drops during workouts.

"...automatically connects to my treadmill and elliptical and tracks my heart rate accurately compared to taking my pulse...." Read more

"...etc, open the app to start recording my heart rate and it would not show heart rate...." Read more

"...on my old Precor elliptical and was surprised when the heart rate display started working, it had never worked with my previous chest band...." Read more

"...Whenever I started hard runs the heart rate just bottomed out, then picked up when I slowed down...." Read more

52 customers mention35 positive17 negative

Customers are mixed about the ease of use of the biometric monitor. Some mention it's fairly easy to use, set up, and use, with an easy-to-navigate app and journal. However, others say that the instructions aren't too good, extremely simple, and time consuming.

"...The app is easy to navigate and I enjoy the journal to show day to day progress...." Read more

"...The polar beat app is free easy download and easy to use with a long list of various fitness activities. i would like to see a cardo circuit added...." Read more

"...Both Polar apps seemed dated and not friendly to use. And I was not about to sign up for any app that needed a monthly subscription...." Read more

"...While it does the job, it could be made better and more user friendly." Read more

41 customers mention20 positive21 negative

Customers have mixed opinions about the value of the biometric monitor. Some find it to be good value, accurate, and a steal for the money. However, others say that it's not worth the hassle and has a low return on investment.

"...Do not buy, not worth it." Read more

"Product is performing well. It's comfortable and was more affordable than other competitors...." Read more

"Piece of crap. The first time I used it, it worked perfectly. It connected to Bluetooth, and synched with the app...." Read more

"...'s high-end tracker standards, but it works superbly and has a far more modest cost than a high-end fitness tracker..." Read more

It’s okay, I like the app, just not reliable on a run
3 Stars
It’s okay, I like the app, just not reliable on a run
The app allows you to catalogue different types of exercises. The selection is a bit strange (like there’s no elliptical?) but it still has a decent range of options. The problem is this doesn’t work well for jogging. The monitor relies on the pulse of your heart through your chest but obviously if you’re jogging it won’t register. So that’s what the picture shows. It kept registering me at baseline and would catch my heart rate and shoot up and then drop. The whole time at the end when it was going up and down, I was basically running full speed and had to hold the monitor down to get a reading but as soon as I’d let go it would lose the reading. So great as a motivator and for mid to low level exercise but not amazing for runs.
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Top reviews from other countries

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Sylvain Awad
5.0 out of 5 stars Great product
Reviewed in Canada on December 9, 2023
Roberta C.
5.0 out of 5 stars Otimo
Reviewed in Brazil on November 25, 2023
Ruben Nuñez
5.0 out of 5 stars funciona muy bien y en automatico se conecta con caminadoras y elipticas
Reviewed in Mexico on March 30, 2023
eugenio
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Reviewed in Spain on March 15, 2024
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