Advantage:Portable, Steady, Aseismatic,Safe Application: 7", 4", 3.5", 2.8" GPS/PDA/3G Phone ... Product Feature and purpose:1. Mainly used for 3G mobile and GPS Phone, GPS, MP3 or other electronic ... minus 40 degree centigrde. It suits for whole day using.4. Good anti-seismic, video stabilization5. Miniature size and ... .Patent:USA: D588.392SChina: 200520070366.2 200720046003.4 GPS/3G Mobile/Phone holder