as much as Best screenless heart rate monitor. That’s because this brand features a pod-like tracker. and a WHOOP Body line to embed the monitor in a wrist strap, swimsuit, boxers, sports bras ...

Indicates whether the model employs a chest strap mounted sensor that transmitts to a watch, a chest strap mounted sensor that transmits to an iPhone app, a watch that requires the user to touch ...

The arrival of heart rate monitoring on the Beats line could herald the feature’s addition to upcoming AirPods updates — though doing so would require a major hardware refresh. Apple-branded ...