Powertap powercal heart rate strap
Powertap powercal heart rate strapthe powercal is the worlds first power meter calculated from heart rate at the time of its release it was an incredible innovation combining two important training metrics heart rate and power and after all these years the powercal remains as one of our most popular products and for a good reason features first ever power meter calculated from heart ratemost affordable way to begin power trainingbluetooth smart compatiblebuy powertap nutrition training