1 Ear Clip Sensor. Connect to the USB heart rate box. Connect to sports machines: Stepper, Treadmill, etc. Connect to for iOS/Android phones with receiver.
5X Cardio EAR CLIP Heart Rate Pulse Meter Sensor for Cardio Fitness5057
Cardio EAR CLIP Heart Rate Pulse Meter Sensor for Cardio Fitness9677
Cardio EAR CLIP Heart Rate Pulse Meter Sensor for Cardio Fitness5593
Cardio EAR CLIP Heart Rate Pulse Meter Sensor for Cardio Fitness5172
Cardio EAR CLIP Heart Rate Pulse Meter Sensor for Cardio Fitness6896
Cardio EAR CLIP Heart Rate Pulse Meter Sensor for Cardio Fitness2652
