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 ...

If you're not hypersensitive to tight devices, a chest strap is unquestionably better than your current smartwatch.

While the best fitness trackers and best smartwatches come with heart rate monitoring, they'll never match the precision of a dedicated chest strap or a wrist-based monitor. The best heart rate ...

Polar makes some of the best heart rate monitors on the market ... data means you can get a workout sent straight to your wrist, making it easier than ever to follow along. Now, Polar users ...

Comfortable, reliable, and featherlight, the Polar OH1 is one of the best optical armband heart rate monitors we've tested ... and other wrist-based activity trackers rely on the latter, as ...