4iiii viiiiva heart rate monitor polar regardless of how hard you

regardless of how hard you ride

twisting and/or windy triathlon competitions as well as time trials

With Polar H10

so it is always on hard when you need it

4iiii viiiiva heart rate monitor polar regardless of how hard youDelivery in 3 4 business days (Ireland, Northern Ireland) Delivery in 5 7 business days (Europe) 4iiii Viiiiva HRM ANT+ heart rate strap is a comfortable, easy to wear heart rate strap with a very high precision. Because you can bundle multiple ANT+ sensors and Bluetooth signals into a single Bluetooth signal, this heart rate strap is ideal if, for example, you use Apple TV in combination with Zwift. The 4iiiiii Heart Rate Sensor then acts as an ANT+