I just received a Polar F4 as a gift. I presently don't have an HRM and would like to try training with one. Before I open it up I'd like to find out if it's worth keeping or should I return it for another model. There was only one comment in the review section and it wasn't much help. Does anyone know anything about this model?
Results 1 to 1 of 1
Thread: Polar F4