external heart rate monitor
Indication for using an external heart rate device.
Explanation: TP doesn't indicate when the athlete uses the heart rate from his/her watch or from a real external heart rate monitor.
Since the watch measurements are not accurate, I would like to have an indication on the session what was the source of the heart rate data.
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Jarek commented
I use Garmin watch and Garmin HRM. With running it is kind of simple how you can determine if a watch or HRM was used. Chest strap provides running dynamics when watch doesn't. If you see on Garmin Connect additional data you know that it came from chest strap. Another way is to force the watch to download heart rate data from the external monitor. You can do it even with previously saved workouts (some heart rate monitors can save data for some time - not sure how long...).