Heart rate monitors · Chest strap comparison
Polar H9 vs. H10: which chest strap fits your training?
The Polar H9 and Polar H10 both sit on your chest. If you plan to view and log your heart rate on one watch, phone, or bike computer, start by checking H9 compatibility. The H10 adds two Bluetooth connections and onboard recording for workouts with your phone put away.
Polar H9 vs. H10 features
| Feature | Polar H9 | Polar H10 |
|---|---|---|
| Placement and sensor | Chest, electrical sensor | Chest, electrical sensor |
| Included strap | Polar Soft Strap | Polar Pro Strap |
| Simultaneous Bluetooth connections | One Bluetooth receiver | Two Bluetooth receivers with the setting enabled |
| ANT+ and GymLink | Yes | Yes |
| Onboard workout recording | None | One session |
| Power and stated battery life | Replaceable battery, up to 400 hours | Replaceable battery, up to 400 hours |
On a phone, scroll the table sideways.
Battery life is the manufacturer’s stated maximum. The table compares documented features.
How to choose for your training
Polar H9 for training with one receiver
The H9 broadcasts heart rate over Bluetooth, ANT+, and 5 kHz GymLink. Check which connections your watch, gym machine, or app accepts before buying. Your connected device saves the workout.
Polar H10 for two Bluetooth receivers
The H10 can send the same reading to two Bluetooth receivers at once when you enable the setting. That can help if you watch your heart rate on your wrist and want an app to log the same workout. The features you can use and see depend on each receiver.
Strap and fit
The H9 comes with the Polar Soft Strap, and the H10 comes with the Polar Pro Strap. Measure around your chest where the strap will sit and check the size on the listing. Polar says to wet the electrodes and adjust the strap before training. Afterward, detach the sensor and clean the strap according to the manual.
Recording one session on the H10
To use the H10’s onboard memory, choose the option to save your heart rate on the sensor in Polar Beat, then start the workout from your phone. You can put the phone away after starting. When you finish, bring it back within range while wearing the sensor and follow Polar’s instructions to end or retrieve the recording.
The memory holds one session. Retrieve the previous workout before starting another and confirm it saved in the app. To see your heart rate during a workout, use a compatible receiver that displays it.
Polar H9 and H10 offers: choose your strap size
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Polar H9
Black · XS–S and M–XXL options
Polar H10 M–XXL
Black · size M–XXL
The two H9 buttons open different sizes. Check the selected size, seller, and what comes in the box on Amazon.com. Replacement straps can be sold separately.
Can I use the strap with another brand of watch?
Check your watch or app manual for support for an external Bluetooth or ANT+ heart rate sensor. The table shows the connection types for each model.
Sources
- Polar H9 features and connectivity
- Polar H10 features and strap
- Polar’s guide to recording a session on the H10
- Polar’s sensor and receiver compatibility guide
Battery life figures come from Polar. See how we compare devices and check the exact variants we link to.