Records breath and heart rate.Besides,with intelligent algorithms,rich sports biometrc data are given,like professional heart and respiration function metrics e.g.,heart rate zones,HR recovery rate,heart-breathe rate ratio,and other quantitative training datasuch as calories,pace and cadence.Cardiocycle smart app gives you deep insight into your true training level with 3 parameters:Heart rate zones,Heart rate recovery time and Heart-Breathe RateRatio.These parameters let you konw if youre over or under-training,if your overall train-ing is improving or staying flat and how hard your are pushing your body and where you are in the training- recovery cycle.