The Mio DigiWalker C230 features an embedded high-sensitivity SiRFstarIII GPS receiver for superior reception, even in densely-packed urban settings and under heavy tree-cover. The bright 3.5-inch touchscreen makes it easy to read your maps and navigate the intuitive menu system. The unit comes pre-loaded with TeleAtlas maps of the U.S (including Alaska, Hawaii, and Puerto Rico), and offers turn-by-turn voice directions, including spoken street names in your choice of voices and languages.