I think the clock super chic. They came quickly and naturally immediately put into operation. Am now already driven 130 km bike so. When you create the belt you can start directly - the pulse is too wet without him previously equal detected and displayed. The operation is very easy, I had the functions of each button quickly out. Something unpleasant I find the thickness of the clock. While the tape is applied nice and flat on the arm carrying the display part on very. Since it remains frequently when tightening, backpack etc. aufstetzen hang it. The buttons can be pretty hard press, but this can of course also have the advantage that you do not accidentally turn comes somewhere. In previous 8maliger use the problem is between 2x occurred that suddenly no longer a pulse is displayed. Unfortunately, the problem could only be corrected by restarting the training. The reason I have not been able to find out.