Polar H9 - Heart Rate Sensor for Cellular Phone, Smart Watch, Activity Tracker, Medium, Double Extra Large

Polar H9 is the ideal jack-of-all-trades heart rate sensor that connects to a large variety of devices. Thanks to Bluetooth, ant+, and 5 kHz

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Polar H9 is the ideal jack-of-all-trades heart rate sensor that connects to a large variety of devices. Thanks to Bluetooth, ant+, and 5 kHz

Polar H9 - Heart Rate Sensor for Cellular Phone, Smart Watch, Activity Tracker, Medium, Double Extra Large