The Mio DigiWalker C310x is an updated version of the Mio C310 that includes enhanced mapping software and an improved interface. The portable navigation system continues to offer preloaded maps of the United States, more than 3.5 million points of interest, text- and voice-guided turn-by-turn directions, and automatic route recalculation. The compact device also has pedestrian and bicycle modes and includes a built-in MP3 player. The Mio DigiWalker C310x is available now for $449.99. For more information, please read our review of the Mio C710 and the Mio C310.