Product reviews:
Isidore
2025-04-02 iphone 8
Polar M400 – Active Tech polar m400 connect to heart rate monitor
polar m400 connect to heart rate monitor
Todd
2025-03-25 iphone 6s Plus
Polar M400 pairing with H7 heart rate polar m400 connect to heart rate monitor
polar m400 connect to heart rate monitor
Matthew
2025-03-30 iphone SE
Best Buy: Polar M400 GPS Watch with polar m400 connect to heart rate monitor
polar m400 connect to heart rate monitor