Magellan Maestro 4250 4.3-Inch Bluetooth Portable GPS Navigator Simple, intuitive interface; Utlra-thin design, only .7 inches deep. SmartDetour prompts drivers to route around traffic and delays 4.3-inch WQVGA full-color, anti-glare, touch-screen display Voice Command; AAA TourBook reviews and ratings Bluetooth for hands-free calling Voice Command; AAA TourBook reviews and ratings 4.3-inch WQVGA full-color, anti-glare, touch-screen display Bluetooth for hands-free calling SmartDetour prompts drivers to route around traffic and delays Simple, intuitive interface; Utlra-thin design, only .7 inches deep.