Insight into the fitness level, how it works, accuracy? Not sure why mine keeps falling off so much. I'm still in good shape and I'm active everyday. Suunto 9 baro. : r/Suunto
vo2 max | runninghost
Deporte por Vida: Estimación de VO2Max (garmin) e índice de carrera (suunto)
Suunto Ambit3 Sport - Features - Running performance level