Polar H9 HR Sensor Color:Black It's constructed with a STRUNG

It's constructed with a STRUNG upper

Modern athletic fit

smoother transfer from heel to toe

We've crafted these with light cushioning and high-performance arch support to minimize downtime and maximize moving time

Polar H9 HR Sensor Color:Black It's constructed with a STRUNGWORKS WITH APPS, SPORTS WATCHES, BIKE COMPUTERS AND GYM EQUIPMENT Polar H9 is an ideal jack of all trades heart rate sensor that connects to a large variety of devices. Thanks to Bluetooth, ANT+ and 5 kHz technologies, it's possible to connect to multiple devices at the same time. TRAIN WITH POLAR BEAT OR OTHER FITNESS APPS Polar Beat is one example of the multitude of fitness and training apps that you can connect your Polar H9 heart rate monitor