![](/images/flag/s/it.gif)
![](/images/flag/s/en.gif)
![](/images/flag/s/es.gif)
![](/images/flag/s/fr.gif)
![](/images/flag/s/de.gif)
![](/images/flag/s/nl.gif)
![](/images/flag/s/pt.gif)
Heart Rate Monitor How the Heart Rate Monitor Works The Heart Rate Monitor is a combination of a Heart Rate Sensor and a sport watch. The Heart Rate Sensor attaches to your chest and measures the electrical signals generated by the heart as it is beating. Using this information, it then calculates your heart rate and transmits it to your watch. You simply glance at the watch during exercise/training to make sure you are in the appropriate heart rate range to maintain or improve your .tness level