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Amazon.com : Polar H10 Heart Rate Monitor, Bluetooth HRM Chest Strap - iPhone & Android Compatible, Black, Size XS - S : Sports & Outdoors
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Polar Verity Sense - Optical Heart Rate Monitor Armband for Sport - ANT+ and Dual Bluetooth HRM - Waterproof HR Sensor with only One Button - Compatible with Peloton, Zwift and other
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