Best Heart Rate Monitor for Running – Wearing the Myzone MZ-Switch with a chest strap
The Myzone MZ-Switch can be worn either with a chest strap or a forearm strap. Photo: iRunFar/Eszter Horanyi
The Myzone MZ-Switch can be worn either with a chest strap or a forearm strap. Photo: iRunFar/Eszter Horanyi