Indicates whether the model employs a chest strap mounted sensor that transmitts to a watch, a chest strap mounted sensor that transmits to an iPhone app, a watch that requires the user to touch ...

The color-coded readings alert ... choice for the technologically challenged. The Polar H10 Heart Rate Sensor was the top-performing chest-strap monitor we tried. Throughout testing we found ...

but it’s only meant for use with Polar’s website. He wanted to do a little more with the equipment so he ditched the watch and built an Arduino-based heart rate monitor. He’s still using the ...

Comfortable, reliable, and featherlight, the Polar OH1 is one of the best optical armband heart rate monitors we've tested ... LED that lights up in different colors as your heart rate zones ...