Polar FT4 User Manual


Wear the Transmitter

  1. Wet the electrode areas of the strap well under running water.

  2. Attach the connector to the strap. Adjust the strap length to fit it tightly but comfortably.

  3. Tie the strap around your chest, just below the chest muscles, and attach the hook to the other end of the strap.

  4. Check that the wet electrode areas are 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 when you are not using it to maximize the transmitter lifetime.

For more information on how to maintain your transmitter, see Washing Instructions for WearLink Transmitter

Start Training

  1. Wear the transmitter and the training computer.

  2. Press OK. Wait until your heart rate is displayed and then press OK to start the recording.

To modify training sound, heart rate view, heart touch or zone limits before starting the recording of the training session, select Settings > Training Settings. For more information, see Training Settings.

Your training file is saved only when the recording has lasted for more than one minute.

During Training

The following information is displayed during training recording. Press UP/DOWN to change the view.


Your current heart rate


Calories burnt during the training session.


The duration of your training session


Time of day.


The training computer informs if you are training in the fitness improving zone by calculating your age-based heart rate limits automatically.

Your current heart rate is also displayed. If your heart rate is not within the designated zone limits, NOT IN ZONE is displayed.



By bringing the training computer near the transmitter connector during training the time of day displayed. The backlight also lights up, providing that you have pressed the LIGHT button during the training session. Set the HeartTouch function On/Off in Settings > Training Settings > HeartTouch.

Pause/Stop Training

  1. To pause your training session recording, press BACK. To continue training recording press OK.

    If you have not continued recording in five minutes, the FT4 will automatically remind you to do so by a sound. You will hear the sound every ten minutes until session recording is either continued or stopped.

    Note: If the sound is off mode then display remains in pause mode until user makes the next selection or the battery runs out.

  2. To stop the recording, press BACK once more. Stopped is displayed.

See Training Summary for information on training session feedback.

Training session feedback will be shown only if the recording has lasted for more than ten minutes.

Detach the transmitter connector from the strap and rinse the strap under running water after every use. Wash the strap regularly in a washing machine at 40ºC/104ºF at least after every fifth use. For more information on caring the transmitter, see Washing Instructions for WearLink Transmitter