The interface has been designed for a portable navigation device with a 4.7“ (480 x 272) LCD touch screen, providing an optimum of usability when driving. For improved, easy control of the device, a high-contrast color palette and a grid system has been added. The “Next Turn-By-Turn”, the most important feature when driving, is effectively laid out. It also encourages a user-friendly experience with its various multimedia applications such as movie player, music player, Bluetooth and photo viewer in an interface mechanism that complys with navigation.