US buying guide
Heart rate monitors and chest straps for training
Start with where you want to wear the monitor and where you want to see the data. Garmin HRM 200, Polar H9, and Polar H10 are chest straps. Polar Verity Sense is an optical sensor you can wear on your arm or at your temple with the swimming clip.
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Choose a heart rate monitor for your training
Chest strap for live data
Compare Garmin HRM 200 and Polar H9 by connection type, strap size, and the data each one sends.
Chest strap with onboard recording
Polar H10 stores one workout. See the manual for how to start recording.
Optical armband
Polar Verity Sense is worn differently and can record sessions.
Garmin HRM 200 and Polar sensors compared
| Model and link | Placement and use | Recording and battery life |
|---|---|---|
Polar H9 Black Affiliate link View on Amazon.com | Chest strap with an electrical sensor. Sends heart rate to a compatible watch, app, or machine. | Bluetooth, ANT+, and 5 kHz. No onboard workout storage. Replaceable battery rated for up to 400 hours by Polar. |
Polar H10 Black, M–XXL Affiliate link View on Amazon.com | Chest strap with an electrical sensor. Useful if you switch between an app and a watch or want to record a workout. | Two simultaneous Bluetooth connections, ANT+, and 5 kHz. Stores one workout. Replaceable battery rated for up to 400 hours by Polar. |
Polar Verity Sense Gray Affiliate link View on Amazon.com | Optical sensor with an armband. A swimming-goggle clip can hold it against your temple. | Bluetooth and ANT+. The manual lists up to 600 hours of memory and up to 30 hours of training per charge. |
Garmin HRM 200 Black Affiliate link Amazon.com · XS–S · 60–85 cm Amazon.com · M–XL · 80–120 cm | Electrical chest strap. Sends heart rate and heart rate variability to a compatible receiver. | ANT+ and Bluetooth. Replaceable CR2032 battery. |
Listings reviewed November 11, 2026. Check delivery for your ZIP code. The comparison uses the product pages and manuals.
What to check before buying
Garmin HRM 200 vs. Polar H9
Both straps send heart rate to compatible watches, apps, or machines. The Garmin HRM 200 also sends heart rate variability data to compatible receivers. Polar H9 adds 5 kHz transmission for gym equipment that uses it. Check the connection type and your chest size before choosing.
Check your watch, bike computer, or app
Look for Bluetooth LE or ANT+ support for external sensors in the specifications. If two Bluetooth receivers need data at the same time, check the H10 or Verity Sense connection settings.
Decide if you will carry your phone
The H9 sends live data and needs a receiver to record the workout. For the H10, check how to start onboard recording in the compatible app. Verity Sense can record on its own and sync afterward.
Confirm the size and what is in the box
Compare your chest measurement with the manufacturer’s chart, then check the selection on Amazon.com. For Verity Sense, check whether the box includes the armband, charger adapter, and swimming clip.
What each heart rate monitor offers
Polar H9
Chest strap for live transmission, including 5 kHz for compatible equipment.
Affiliate linkPolar H10
Chest strap with two simultaneous Bluetooth connections and memory for one workout.
Affiliate linkGarmin HRM 200
Chest strap with Bluetooth and ANT+. Choose XS–S or M–XL.
Affiliate linkQuestions before buying
Will it connect to my watch?
Check whether your watch supports external Bluetooth or ANT+ sensors and compare that with the exact strap’s connection options.
Which Garmin size should I choose?
See the two sizes in the Garmin HRM 200 row and measure around your chest before choosing.