I'm not asking much to a cardioférquencemètre: it measures the frequency and works too
I often bought Monitors which lasts me a few months; it seems tough enough.
It has a button for my use is enough but it is very ergonomic to access other features.
The belt is made of fabric and comes apart and goes back simply.
Sensitivity to beats is average but better than cardio that panic soon as we change pace.
The font size is too small to display a meter and a heart beat legibly when the eyesight.
For easy use, like mine, I suggest.
