Photo 1 of Heart Rate Monitor Armband HRM CHILEAF Heart Rate Sensor HR Sensor IP67 ANT+ Bluetooth 60H Long Battery Life Compatiable for Polar Beat,Wahoo Fitness,SportsTracker,Zwift,Nike+Run Club,X-Fitness, Etc

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Photo 1 of Heart Rate Monitor Armband HRM CHILEAF Heart Rate Sensor HR Sensor IP67 ANT+ Bluetooth 60H Long Battery Life Compatiable for Polar Beat,Wahoo Fitness,SportsTracker,Zwift,Nike+Run Club,X-Fitness, EtcPhoto 2 of Heart Rate Monitor Armband HRM CHILEAF Heart Rate Sensor HR Sensor IP67 ANT+ Bluetooth 60H Long Battery Life Compatiable for Polar Beat,Wahoo Fitness,SportsTracker,Zwift,Nike+Run Club,X-Fitness, Etc