[tallanvor]

I have the first version of the band, and the heart rate monitor seems to be quite accurate - I used it any my old Polar watch (where you wear a band around your chest to monitor your heart rate) and found that they typically only varied by a couple of beats per second, and the only time the band shows major fluctuations is if you don't have it snug enough so it can properly monitor the rate.

It works just fine for me both for strength training and running, and I'd certainly recommend it to others.

[cakes]

I had some issues with the heart rate monitor on the first band. I accept that it was likely user error (my fault) but a few times during a normal exercise routine it reported heart rate values well outside the where my heart rate was (or should be)