1. Letter compass, always grasp the driving direction, meet different needs, navigation is more convenient. 2. No need for OBD model recognition, compatible with any models. 3. Color screen display, high-definition eye protection. 4. Sensing the intensity of external light, automatically adjust the screen brightness to adapt to the environment. 5. No need to lower your head to see the dashboard data, driving safer. 6. Parameters: Screen size: 80 x 45 x 12mm Operating temperature: -20~85 degrees Celsius Power supply voltage: 12V Display function: speed, GPS navigation, speeding alarm