Absolute discretion compared to the huge media to stick on the windshield or clip-in ventilation grille, the magnet is strong enough to hold a Blackerry without problems, even with a sporty driving and sometimes it has significant vibration s never moved, the only problem is when I connect the phone because the outlet is on the side of the mobile phone to tend to turn and when there is GPS is a little ***** c ^^ but otherwise very good product double face never moved