Originally Posted by
mschwett
that’s a good thing!
but if you really want the most accurate - but still “consumer grade” HRM data for your personal workouts, just get a chest strap. Inexpensive, easy to use, durable, reliable.
The only acceptable alternative I have found to a chest strap HRM (for monitoring vigorous exercise) is the Polar OH1 optical sensor, worn on my upper arm. I find it more convenient than a chest strap. It has a far more powerful optical array than any I’ve seen on any watch or fitness tracker.
DC Rainmaker has very detailed reviews on all HRMs worth mentioning. Most of the wrist worn optical sensors found on watches and trackers have issues when cycling or high intensity intervals.