This heart rate monitor is the most comfortable I've ever used. Chest straps always felt like they were compressing my lungs slightly and I couldn't wait to get them off, I forget this COROS monitor is even on. It's far more accurate and responsive than any of the wrist based sensors I've used and the battery life is excellent, I rode 200 miles in the cold and rain and it still had 78% battery when I was done! This is a must have upgrade for serious athletes.
Title says it all. HR is not a big focus for me anyway. Loving the arm band vs the chest straps. A+
