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Polar H9 Heart Rate Sensor

4.3 4.3 out of 5 stars 7,308 ratings
Price: $59.95 $84.78 Free Return on some sizes and colors

Brand POLAR
Material Polyester
Color Black
Compatible Devices Smartphones
Screen Size 0.96 Inches
Product Dimensions 1.34"L x 2.56"W x 0.39"H
Item Weight 100 Grams
Battery Life 400 Hours
Sensor Type Wearable
Battery Description Lithium-Ion

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

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  2. pacer pro

    It all began in 1977.

    This is the year we launched an entire industry.

    We had the foresight to see the incredible potential in wearable devices, and we’ve led the charge ever since – developing the most advanced, trusted, and innovative technology that can be worn by anyone who wants to understand their bodies better.

  3. Who is Polar?

    A collection of minds built around an idea that was born over forty years ago on a cross-country ski track in northern Finland.

    Where is Polar based?

    Polar HQ is situated in Oulu, Finland.

    Today, Polar employs 1200 people worldwide, has 26 subsidiaries globally and manages a distribution network supplying over 35,000 retail outlets in more than 80 countries.

  4. sports watches heart rate monitor gps

    The products we make are the result of years of unparalleled innovation in science and guidance technology – this is the leading differentiator between us and everyone else.

    Polar Research Center's key focus areas:

    • Physical activity & Behaviour,
    • Exercise & Sports Training,
    • Sleep & Recovery,
    • Sports Nutrition,
    • Data & Science,
    • Biosignal Technologies

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    Polar Flow

    Polar’s free app and webservice platform, providing personalized online training and guidance.

    See your progress, set your goals, plan your sessions, and analyze your performance with all of your exercise and sleep data synced automatically.

    Polar Flow syncs to a wide range of popular apps (Strava, Nike Training Club, Peloton, and more).

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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
7,308
4.3 out of 5 stars
20,341
4.2 out of 5 stars
2,776
Price $59.95 $87.48 $95.95
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

Product guides and documents

User Guide (PDF)
User Manual (PDF)

Looking for specific info?

Customer reviews

4.3 out of 5 stars
4.3 out of 5
7,308 global ratings

Customers say

Customers like the accuracy of the biometric monitor. They say it is the most accurate HRM they have ever used, and it gives consistent readings. They are also satisfied with the comfort. However, some customers have different opinions on performance, connectivity, quality, heart rate, value, and ease of use.

AI-generated from the text of customer reviews

77 customers mention60 positive17 negative

Customers like the accuracy of the biometric monitor. They mention that it seems to be very accurate, and provides consistent readings. They also appreciate the accuracy and consistency of the chest strap sensor. Overall, customers find the product to be a great buy, and recommend it to others.

"...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

55 customers mention40 positive15 negative

Customers like the comfort of the biometric monitor. They mention that the strap is soft and barely noticeable after a few minutes. They also appreciate the smooth and reliable connection.

"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

205 customers mention122 positive83 negative

Customers are mixed about the performance of the biometric monitor. Some mention that it works superbly, the transmitter functions great, and the sensor works very well. However, others say that it essentially didn't work at all, appears to be failing, and is pretty basic in functionality.

"...I was able to just put the belt on my chest and it worked perfectly after pairing with bluetooth...." Read more

"I did not find this very useful. The app was not very informative. Maybe I did not understand how to use it...." Read more

"...The H9 model is pretty basic in functionality, but it performs its job well...." Read more

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

150 customers mention56 positive94 negative

Customers are mixed about the connectivity of the biometric monitor. Some mention that it pairs to their devices very easily, while others say that it doesn't always connect well with Apple products.

"...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

"...i would like to see a cardo circuit added. the chest monitor paired relatively easy with my iphone and the app...." Read more

"...It cannot connect. I've reset it several times, replaced batteries, etc...." Read more

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

126 customers mention61 positive65 negative

Customers are mixed about the quality of the biometric monitor. Some mention it works great, is very reliable, and does not disappoint. However, others say that it's unreliable, flaky, and not built to last.

"...What more could I ask for?Quality product, highly recommended!" Read more

"I bought this strap and after 1 use, it's completely broken. I tried updating the software using the Polar app only to be told the update failed...." Read more

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

60 customers mention33 positive27 negative

Customers are mixed about the heart rate. Some mention that it tracks their heart rate accurately, and provides heart rate information to Zwift and Strava for every workout. However, others say that it stopped showing heart rate and that the readings consistently dropped.

"...Workouts can be saved and tracked. Best investment this year." Read more

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

"...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

"...For example if I was running, then stopped to cool down, my heart rate would not change...." Read more

59 customers mention20 positive39 negative

Customers are mixed about the value of the biometric monitor. Some mention it's great value and reliability for the price, while others say it'll not be worth it, has a low return on investment, and is unreliable.

"...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

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

"...Perhaps the original battery was of low quality. I would have expected longer battery life...." Read more

"...Pretty disappointed with this. It's basically worthless." Read more

54 customers mention36 positive18 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, the app is easy to navigate, and understand. However, others say the instructions aren't too good, the steps are time consuming, and the troubleshooting is unhelpful.

"It was easy to download the app and get it going. Easy to understand. One button start...." Read more

"...It's extremely simple, and it's in that simplicity that I think Polar missed the boat...." 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

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

Kat
5.0 out of 5 stars Strap on and go
Reviewed in the United States on March 24, 2024
Size: M-XXLVerified Purchase
It was easy to download the app and get it going. Easy to understand. One button start. I was able to just put the belt on my chest and it worked perfectly after pairing with bluetooth. I have been using this every day for the past 6 months. It helps me to stay within my target heart zone otherwise I would just be guessing. I have made considerable progress towards my fitness goals because I knew where I was at in each zone. The app tells you which zones are which and where you should be. Workouts can be saved and tracked. Best investment this year.
One person found this helpful
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Alejandro The Great
5.0 out of 5 stars The only brand I trust
Reviewed in the United States on February 26, 2024
Size: M-XXLVerified Purchase
I've been using Polar HR monitors for over two decades now. I was using my polar FT7 to track my workouts until recently when I was gifted a Garmin watch. The old polar HR monitor doesn't have ANT+ so decided to purchase a Garmin Duo to go along with my watch it believing that the same brand would work best. 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! It paired instantly with my Garmin and I've had no problems whatsoever! It's also compatible with the Polar chest bands I already have, so I'll always have extras on hand. What more could I ask for?

Quality product, highly recommended!
4 people found this helpful
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Rrusty
5.0 out of 5 stars Works good with multiple devices
Reviewed in the United States on January 30, 2023
Size: M-XXLVerified Purchase
I was looking for a simple chest strap heart rate monitor to communicate with my Concept 2 RowERG rower (uses ANT+) and with my Amazfit T Rex 2 fitness watch (uses bluetooth). I wasn't sure if this could do both simultaneously, but decided to try it out. After a few minutes pairing things up in the POLAR phone app and registering it, I synced it to my watch and then connected to my rower monitor. Worked exactly as I hoped with no problems at all.

I have plenty of other workout apps, so I don't use the available POLAR fitness app, but it appears to be fairly well designed for guiding workouts and tracking fitness. The H9 model is pretty basic in functionality, but it performs its job well.

I've been using it 1.5 hours daily for a couple of weeks and the battery is still fine (which is expected). If any battery life issues crop up, I will update my review.
9 people found this helpful
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Sojourn
4.0 out of 5 stars Good buy
Reviewed in the United States on February 16, 2024
Size: M-XXLVerified Purchase
Product is performing well. It's comfortable and was more affordable than other competitors. I've only been using it for a few weeks so far, so long term reliability is uncertain at this point. The strap does come loose and require adjustment every few uses, similar to some other brand versions of this. There are some that have not had to adjust often as well. The clasp on the strap is a simply loop of material that slides over a metal hook. I'll admit that my old eyes have trouble seeing this clearly so it can feel a bit like threading a needle. I hope the material holds up for the life of the product. All in all, I would buy this product again over other options based on my experience so far. The warranty in writing also appears superior to other competitors. I haven't tried to use the warranty though.
One person found this helpful
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Kevin Derrick
1.0 out of 5 stars Stopped working after 1 use
Reviewed in the United States on December 27, 2023
Size: M-XXLVerified Purchase
I bought this strap and after 1 use, it's completely broken. I tried updating the software using the Polar app only to be told the update failed. Now the device cannot be detected by my phone or any other device. It cannot connect. I've reset it several times, replaced batteries, etc. Should be an easy warranty claim except that Polar's customer service is "too busy" and hasn't responded to any of my requests for help in over a week. They did send me a survey though asking how their handling of my ticket was, which was the only communication I got from them. What a joke
5 people found this helpful
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Dave T
5.0 out of 5 stars Way more accurate than a wrist-based watch
Reviewed in the United States on February 3, 2024
Size: M-XXLVerified Purchase
My watch HRM kept indicating a high starting rate for my workouts - so I went back to the original, high quality Polar chest strap monitor. Steady increase as my workout warmed up - as I had expected. Bluetooth links to my iPhone AND my IFit Tour de France Exercycle. JUST what I needed to restore my confidence in a safe workout. Both thumbs up!
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Gonzilla
5.0 out of 5 stars Works great, very reliable, good battery life
Reviewed in the United States on February 25, 2024
Size: XS-SVerified Purchase
Works great, very reliable, good battery life - 5 months/135 hours of use before the first battery change. Very happy with this on after burning though multiple Garmins. Much easier to access the battery compared to a Garmin as well.

Don't make the mistake I made - make sure you pick the right size for the chest strap.
One person found this helpful
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Top reviews from other countries

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Horia Popan
5.0 out of 5 stars Super fast to connect via bluetooth to my android phone while using zwift.
Reviewed in Canada on April 17, 2024
Size: XS-SVerified Purchase
I have purchased this HR monitor to use with the zwift application on my android phone. I have an older version of Wahoo HR monitor that would need minutes to connect to zwift via Bluetooth. This Polar HR connects very fast but it is expected considering that its technology is few generations newer than the technology in my old Wahoo HR.
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Roberta C.
5.0 out of 5 stars Otimo
Reviewed in Brazil on November 25, 2023
Size: M-XXLVerified Purchase
Melhor frquencimetro que ja tive
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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
Size: M-XXLVerified Purchase
para monitorear ritmo cardiaco en rodadas en bici y ejercicio en general
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eugenio
5.0 out of 5 stars BUENA BANDA PULSÓMETRA
Reviewed in Spain on March 15, 2024
Size: M-XXLVerified Purchase
Compré el Polar H9 durante el Black Friday con una excelente oferta, y debo decir que estoy muy satisfecho con mi compra. Este sensor de frecuencia cardíaca cumple su función de manera eficiente y confiable. No he tenido ningún problema al sincronizarlo con mi reloj Polar M430 ni al usarlo en pruebas exigentes que lleven mi corazón al límite.

Durante mis entrenamientos más intensos, el Polar H9 ha demostrado ser preciso y consistente. No ha habido ningún salto o error al monitorizar mis pulsaciones, lo cual es crucial para un seguimiento preciso del rendimiento. Además, es muy cómodo de llevar y no molesta al correr, siempre y cuando lo ajustes correctamente, como cualquier otro pulsómetro.

En comparación con las mediciones de frecuencia cardíaca en la muñeca de mi reloj, el Polar H9 ofrece lecturas mucho más precisas. Para aquellos que buscan un seguimiento más avanzado, es posible que necesiten invertir en opciones más tecnológicas y costosas. Pero para mí, el Polar H9 cumple con creces mis expectativas y necesidades.
One person found this helpful
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Amazon Customer
5.0 out of 5 stars Review
Reviewed in India on January 11, 2024
Size: M-XXLVerified Purchase
Received the product in good condition
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