Tried MIO LINK for a season and went back to chest strap because the MIO was not very reliable. Now on the hunt again for new optical HRM. Science has advanced in correlating heart rate variability with fitness and fatigue - Hope to take advantage of new metrics to maintain health and longevity in this sport.

I would only buy the ZOOM HRV if it can be paired for use with my Garmin 920.... but so far looks like only iPhone compatible.

Your Experience?