Polar
Polar H9 - Heart Rate Sensor for Mobile Phone & Smartwatch
The Polar H9 heart rate sensor tracks your workouts with precise chest-based heart rate monitoring. Compatible with mobile phones and smartwatches, it lets you see your heart rate data in real time. Lightweight (60g) and comfortable with a flexible band made of elastine, polyamide, and polyester.
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Updated on May 18, 2026
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