Originally Posted by
musicmaster
Cycling
If I'm on a flat surface, no wind going like 18-20mph, my heart rate is around 130-140.
Try going 22-24mph then. As others have alluded to, your cadence might be too low.
As for your original question:
For those who have them, do you find they are worth the cost?
I have one and I think it is worth the cost.