Features: 4.3 LCD TFT display with touch screen for control and input Professional portable navigation system, UI design for mobile application, Convenient operation Most popular Windows OS, World class CPU SD card of extensible capacity for mapping data, MP4 video, MP3 music, Photo, and personal files Map for major large and medium scale cities, detailed mapping data, real voice guidance, automatic smooth switching Built-in high sensitive GPS receiving module and antenna, Faster GPS signal receiving and More accurate positioning Prompt and accurate positioning applicable for GPS data collection, e.g. Area measuring Prompt response for both cold and warm start; Re-capture of GPS signal just in 1 second on average, Accuracy of positioning: no more than 10 meters; Accuracy of timing: no more than 1 microsecond Embedded Organizer/Calendar, personalized friendly touch panel handwriting control, record and plan personal schedule Multimedia entertainment: Flash display, MP3 music, MP4 video, Photo viewing Scientific calculation: embedded calculator, a good business assistant Personalized function setting：Language selection, Backlight brightness adjustment; Power management, Coordination calibration The FM transmitter designed for use in a car with car stereo is not controlled with volume of the device. A user friendly feature is GPS hold On . With this feature, you may use the device for other applications, like music, e-Book, except for Falsh, by pressing Return button on the device to switch GPS application to background and keep it running without exiting from GPS application during the same time.