[ 2008 / 4 / 23 ] Here Comes the Revolutionary Product, G4 dmedia’s upcoming model, the G4, promises to bring GPS navigation devices to the next level. The G4’s unique design boasts a wide 4 inch display screen and a sleek black design .....more [ 2007 / 5 / 15 ] Navtour NT147 GPS Device Official U.S. Launch dmedia’s upcoming model, the G4, promises to bring GPS navigation devices to the next level. The G4’s unique design boasts a wide 4 inch display screen and a sleek black design with a rounded casing. .....more