Negative was the installation of the transmitter, as the included rubber band must be stretched very cumbersome to the fork. Since it takes several tries. If that is done only once, the transmitter also remains firmly clamped. Then access to the settings menu is very difficult to achieve. One has a small rubber button on the back of the speedometer by press pin and then passes only in the settings menu. There, the menu is not very intuitive, but even necessary.
Now comes the weakest point of the transmitter. The speedometer does not receive a signal when the transmitter is located too far down on the front fork. I had even returned to the sender SIGMA, but there was no defect detected. Have yourself simply the transmitter and magnet mounted higher out of necessity, and finally the speed arrives at the speedometer. If one considers that, having my a functioning speedometer. For higher-value models of SIGMA, the reach of the sender is clearly higher.