Advantage:Portable, Steady, Aseismatic,Safe Application: 7", 4", 3.5", 2.8" GPS/PDA/3G Phone Cert: CE, RoHS, ISO9001:2001 ... GPS Phone, GPS, MP3 or other electronic device in vehicle.2. The dynamic test show that: No move when suddenly brake ... , please take down the product.Patent:USA: D588.392SChina: 200520070366.2 200720046003.4 GPS/3G Mobile/Phone holder