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- Ordered before 22:00, delivered tomorrow
- Free tracked delivery
Pros & Cons
Pros & Cons
- With a battery life of 400 hours, a battery will last for about a year if you train one hour a day.
- Can connect with your sports watch, bike computer or fitness equipment via Bluetooth, ANT+ or 5kHz.
- Can connect with a Bluetooth and ANT+ device at the same time; this is ideal when you exercise with multiple devices, like a bike computer and a sports watch.
- The Polar H9 has no memory function or accelerometer. For these features please consider the Polar H10 heart rate sensor.
Specifications
Specifications
| Brand | Polar | |
| Heart rate monitor model | Chest Strap | |
| Chest circumference | 65 - 107 cm | |
| Rechargeable | No, button battery | |
| Colour | Black | |
| ANT+ | Yes | |
| Bluetooth | Yes |
You will find real-time heart rate monitoring, training goals and guidance, and performance analysis in the Polar Beat app. You'll also have access to Polar Flow for more extensive data analysis and an overview of progress over a longer period of time. This device is compatible with iOS mobile devices: iPhone 5s and later, with iOS 12 or later; Android mobile devices with Bluetooth 4.0 capability, and Android 6.0 or later. That means you can use the Polar H9 with most modern smartphones. If you're looking for a quality heart rate sensor with the aim of using it with your favourite Polar device or smartphone, choose the Polar H9!
The Polar H9 is suitable for use during long swims. Polar has not had an independent party test the product for water resistance, which is why it doesn't have an official IP rating, but Polar has done a lot of testing itself. As a result, Polar states that the product is water-resistant up to 30 metres deep. In practice, this means that you can go swimming with this product, but we don't recommend actually diving to a depth of 30 metres with it!
ANT+
ANT+ connectivity allows you to connect this device to other devices that use the ANT+ protocol. That means products from different manufacturers can be linked smoothly to this device. Many bike computers and compatible sensors support this wireless technology through which all your sensors and devices can exchange data easily, so you can have all your data in the right place.
Bluetooth
You can easily connect this product to most smartphones and view your training data in all your favourite fitness apps, such as Strava, Runkeeper, Endomondo and Wahoo Fitness, thanks to its Bluetooth connectivity.
• Polar Soft Strap
• Polar H9 quick guide
• Information form
Ask a question about this product
Try in store
Available directly in-store, or order online.
Reviews
Reviews
Most recent reviews
4 / 5
All right, but unfortunately the tyre went flat within a year.
I bought this heart rate strap in November 2025. I use it five times a week: once for running and four times for biking. Unfortunately, after about 10 months, the data has become unreliable – probably due to a fault in the strap. It has, unfortunately, worn out a bit faster than expected, but that’s not surprising given the intensive use. I’ve never put the strap in the washing machine; I’ve always just rinsed it and hung it up to dry.
Pros & Cons
3 / 5
3½ years of enjoyment, then buy a new one
It connects well, is comfortable to wear and works accurately. The downside is that it breaks easily, just like all heart rate monitors on the market.
Pros & Cons
5 / 5
Quality is top
Works fine with your phone
Pros & Cons
5 / 5
Top product
This Heart Rate Monitor is great. Does what it needs to do,reliable and stable. pairs effortlessly with Iphone via Polar Beat and Polar Flow
5 / 5
Works as intended.
Works as intended. Great for interval running or anything that can swiftly change your heart rate.
Pros & Cons
4
All right, but unfortunately the tyre went flat within a year.
I bought this heart rate strap in November 2025. I use it five times a week: once for running and four times for biking. Unfortunately, after about 10 months, the data has become unreliable – probably due to a fault in the strap. It has, unfortunately, worn out a bit faster than expected, but that’s not surprising given the intensive use. I’ve never put the strap in the washing machine; I’ve always just rinsed it and hung it up to dry.
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Easy to pair
-
Easy to use
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Good data
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The strap wore out quite quickly
3
3½ years of enjoyment, then buy a new one
It connects well, is comfortable to wear and works accurately. The downside is that it breaks easily, just like all heart rate monitors on the market.
-
Works well and accurately
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Broke down after 3½ years, so now I have to buy a new one
Frequently bought together
Frequently bought together
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| Polar H9 | Hammerhead HRM 2.0 C1 | Polar H10 | Garmin HRM-Fit | |
| 29 reviews | 1 review | 36 reviews | 1 review | |
| Heart rate monitor model | Chest Strap | Chest Strap | Chest Strap | Chest Strap |
| Chest circumference | 65 - 107 cm | 71 cm - 122 cm | 75 - 118 cm / 62 - 82 cm | |
| Rechargeable | No, button battery | No, button battery | No, button battery | No, button battery |
| Colour | Black | Black | Black | Black |
| ANT+ | Yes | Yes | Yes | Yes |
| Bluetooth | Yes | Yes | Yes | Yes |
| 54,95 | From 39,95 | 83,95 | 137,85 | |
| This product | View product | View product | View product |