Advantage:Portable, Steady, Aseismatic,Safe Application: 3.5", 4.3", 5" GPS/PDA/Iphone/3G ... for 3G mobile and GPS Phone, GPS, MP3 or other electronic device in vehicle.2. The dynamic test show that: No ... turning, bumpy road, slight crash, it can protect the electronic device safe in vehicle.3. The static test show that: the pull ...