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

Polar H10 Heart Rate Sensor (Black Crush with Text) [M-XXL] - JB Hi-Fi

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Polar H9 Bluetooth, ANT+ and 5 kHz Coded Heart Rate Sensor