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How Are Calories Tracked on My Edge 20/25?
Depending on what accessories1 are used with the Edge, calories burned during a recorded activity will be calculated using the following data:
Speed, Distance, and User Profile - calculated using speed and distance from GPS or an ANT+ enabled speed sensor1 and user profile data.
Heart Rate - generic heart rate based calorie algorithm using heart rate data from an ANT+ enabled heart rate monitor1 and user profile data.
1The Edge 20 is not compatible with ANT+ enabled fitness sensors. Only the Edge 25 can be paired with ANT+ enabled fitness sensors.