My mobile Falk Navi has unfortunately often annoyed me, because it seemed when the sun shines often only acoustically, but the screen could not be detected. With the sunroof which has now become much better. Course in the fall (and probably in the spring) low sun that still causes problems, but last week I was always glad to have this accessory. Even on rough roads keep the rubberized strap the roof well on my GPS. Bit fiddly is the assembly; but probably also a Übungssache.Einen star less I have to give, because if I workings, the navi and stow, I can not so nice merge small as that would be for the glove compartment desirable sunroof. The two wire brackets stand out. But with the price still a buy recommendation.