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Polar H9 reacts instantly to what happens in your body and gives you accurate calorie burn. Polar H9 is the ideal jack-of-all-trades heart rate sensor

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For all your sports. Bluetooth and ANT+ technologies open up endless connection possibilities to any app or device you want to use.

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Polar H9 reacts instantly to what happens in your body and gives you accurate calorie burn. Polar H9 is the ideal jack-of-all-trades heart rate sensor

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