The problems with the connection between and chest strap and I can not understand.
For me, the signal does not break down when I set the clock on the included bike mount holder (distance between clock and chest strap 70cm).
Operation is perfectly logical for a few minutes and easy to understand. The settings of name, sex, weight, age, date and time are quite simple.
As a nice gimmick then the name of the carrier in the display (which is in the pictures PC-15).
The heart rate zones are calculated according to the entered data and each appears in the training.
I can only say that I am fully satisfied and would buy this clock at any time.