Portable GPS System
Portable Units
Portable GPS units can be used in car or by a pedestrian.
Lower end portable models may have small screen sizes and little memory capacity. Due to their limited memory capacity they can only store maps of a specific region. It may not be possible to store the whole map of a country like the United States. The maps on lower end portable units are usually stored in SD Cards, CD ROMs or in the system’s built memory.
Higher end potable units have larger screens and large memory storage capacity. They typically use a hard drive or DVD disk to store the map software. Most of the high end portable units have other cool integrated features such a MP3 playback capability, xm satellite radio services, picture viewers, audio books and blue tooth integration.