The magnet diameter is only 38 mm, thus it is discreet and very elegant in the car interior. The baseline has a round joint holder which enables to set up your phone in any angle. The self-adhesive chip and a sticker are highly adhesive to your dashboard, therefore they hold even the larger phones safely. In case you need to take off without leaving any marks. You do not need to worry that by using the holder your phone or car interior would be devalued. The magnet alone and its magnetic field do not affect the functions of the phone or GPS navigation as well.