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Polar Verity Sense - Optical Heart Rate Monitor Armband for Sport - ANT+ and Dual Bluetooth HRM & H10 Heart Rate Monitor – ANT + , Bluetooth - Waterproof HR Sensor with
Polar Verity Sense - Optical Heart Rate Monitor Armband for Sport - ANT+ and Dual Bluetooth HRM & H10 Heart Rate Monitor – ANT + , Bluetooth - Waterproof HR Sensor with