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Polar Black H10 Heart Rate Sensor Replaces H7 With 5 kHz Transmission & Bluetooth Low Energy - M/2XL - Newegg.com
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Amazon.com : POLAR H7 Bluetooth Heart Rate Sensor & Fitness Tracker (Black, Medium/XX-Large) : Heart Rate Monitors : Sports & Outdoors
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Amazon.com : POLAR H7 Bluetooth Heart Rate Sensor & Fitness Tracker (Black, Medium/XX-Large) : Heart Rate Monitors : Sports & Outdoors
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