Go to Settings and select the "Bluetooth" entry there. Activate the Bluetooth setting, triggering an automatic search for heart rate monitors within range. Select the required heart rate monitor to connect to it. The active connection to the heart rate monitor can be recognized in the status screen by the white heart symbol. If a Bluetooth enabled heart rate monitor is activated, the heart rate will be displayed on the screen. Recommended heart rate monitors: Polar H7, Polar H10 Heart Rate Sensor, Runtastic Heart Rate Combo Monitor, Wahoo TICKR Heart Rate Monitor, BerryKing Heartbeat chest strap and BerryKing Sportbeat armband.