DESC: The StreetPilot c-series GPS navigators feature a simple touchscreen interface, with automatic route calculation to any destination and turn-by-turn voice-prompted directions along the way. Selecting a destination is straightforward and requires only a limited amount of input from the user. Plus, the StreetPilot c320 and StreetPilot c330 allow you to choose between a three-dimensional navigation view or the more traditional “bird's eye” overhead view.