Originally Posted by
terrymorse
I got rid of my unreliable chest band heart rate sensor and now use this
optical armband sensor from Polar.
Very accurate, connection to Garmin 830 never drops out, comfortable.
I wear it on my upper arm to avoid the handlebar vibration.
That’s the one I’ve been using for a couple of years now. Hasn’t missed a beat (pun intended). There’s a new version of it available now that I linked in an earlier post. Pretty much identical, just longer battery life and improved strap.