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Best Choice Garmin 
Garmin HRM-Pro, Premium Heart Rate Monitor, Wireless Strap and Sensor The HRM-Pro heart rate monitor transmits accurate real-time heart rate and performance data to your compatible Garmin smPOLAR 
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CooSpo Heart Rate Monitor Armband Optical Heart Rate Sensor Armband Bluetooth ANT+ IP67 Heart Rate Monitor for Peloton S CooSpo Heart Rate Monitor Armband: Patented optical sensor technology for highly accurate heart rate monitoring and measGarmin 
Garmin HRM-Pro Plus, Premium Chest Strap Heart Rate Monitor, Captures Running Dynamics, Transmits via ANT+ and BLE (010- Premium heart rate strap transmits accurate real-time heart rate and heart rate variability data via ANT plus technologyMagene 
Magene H303 Heart Rate Monitor, Heart Rate Sensor Chest Strap, Protocol ANT+/Bluetooth, Compatible with iOS/Android APPs New Design: Newly designed hardware and algorithms avoiding the noise interference caused by movement and sweating，helpPOLAR 
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