You are here: Training > Wear Heart Rate Sensor

Wear Heart Rate Sensor

Wear the comfortable heart rate sensor with your A300 and get more out of your daily sports. You can see your heart rate accurately and in real time in your A300. See the main effect of your training, and focus on what you want to achieve - burning fat or improving fitness. Or get heart rate zone based guidance for training sessions you've planned in the Flow web service. The heart rate sensor detects your heart rate also when swimming.

Although there are many subjective clues as to how your body is doing during exercise (perceived exertion, breathing rate, physical sensations), none of them are as reliable as measuring heart rate. It is objective and is affected by both internal and external factors - meaning you will have a dependable measure of your physical state.

  1. Moisten the electrode area of the strap.
  2. Tie the strap around your chest, just below the chest muscles, and attach the hook to the other end of the strap. Adjust the strap length to fit tightly but comfortably.
  3. Attach the connector to the strap.
  4. Check that the moist electrode area is firmly against your skin and that the Polar logo of the connector is in a central and upright position.


Detach the connector from the strap, and rinse the strap under running water after every training session. Sweat and moisture may keep the heart rate sensor activated, so also remember to wipe it dry. For more detailed caring instructions see Taking Care of Your A300