During installation, the idea was quickly in the wireless variant: The laying of the cable is a fumbling, and a wound to the down tube cable is not necessarily elegant. ("And then you tüddelst the since so rum, and then that's it.") But I expect compared to the "STS" version more reliability, low maintenance and a less attractive target for vandalism or theft.
Agree with other reviews regarding the agreement Cable length: It is badly short. Each turn had to be weighed and a viable winding be found by trial and error. In the area of the head tube has for example not enough for a complete guide to the derailleur along. And later I would have liked more wound.
The magnet, as can be seen in the Amazon Photo is in two parts, it includes a removable base, which extends the distance if necessary. It is mounted through the cable binder.
