Firstbeat Analytics and fēnix Watches

Firstbeat Analytics™'s calorie computation formula uses heart rate and user profile to calculate the calories reading. When no heart rate monitor is paired to the fēnix® watch, the watch will calculate calories by speed, distance and user profile.

While Training Effect is a Firstbeat Analytics calculation, the fēnix watch does not measure this value. For more information on training effect please see related content.