Product details:

Premium Aptix Source Units feature GPS turn-by-turn navigation for all 50 United States, powered by iGo Primo. Set your destination to one of nearly 17 million available points of interest, or your own unique location. Follow the on-screen directions or audible text-to-speech commands, including lane departure guidance. Additional features include favorites list, programmable home destination, destination fuel estimates, multi-lingual, multi-gender voices, speed limit warnings, and more!