Wareable – A couple of weeks ago I wrote a piece born of frustration with the current crop of optical heart rate sensors. After we reviewed the Garmin Vivosmart HR, Forerunner 235 and Polar A360, it wasn’t a surprise that they weren’t as accurate as chest straps – but I felt brands weren’t being upfront about the shortcomings of sensors. Read More.
Optical heart rate tech accuracy: The experts speak
