Look, this last joker just doesn't know how to use a heart rate monitor. I do intensive training and do everything by heart rate. The PulseWare Duo offers more than the comparable Polar and for a cheaper price. The finger sensors is a great little extra feature that I have found to work flawlessly whenever I use it as instructed. As for the strap, it seems equally as accurate as the Polar I was using before it. Plus, it displays a lot more than most Polars do at once. I get to see my percent of max displayed two different ways, my current heart rate, and time all at once. Not to mention the design is much cooler and original on a superficial level than virtually all Polars. My only beef is that being left handed I wear it on my right wrist, which conflicts with some of the training I do because I occasionally hit buttons.