Comment by bretkoppel

Not OP, but can answer. At its best, the band tracks relatively well to my chest strap. However, it's not 100% consistent - Some days the band seems to bounce around while my chest monitor is steady in the expected range. With that said, the band is close enough that I roll with it alone for my normal short runs(~5k) and only bother with the strap for longer distances. YMMV.