GPS Head-up Display Speed Mileage Compass Car General 1. GPS satellite speed measurement, full screen large font 2. Speed ??alarm, fatigue driving alarm 3. Statistics of single driving mileage, single driving time statistics, total mileage statistics 4. Car battery voltage display, local time display 5. Speed ??unit kmmile can be switched 6. Easy installation, no wiring required 7. Powered by car USB or cigarette lighter USB, zero consumption 8. Using ABS+PC material, high temperature resistance, corrosion resistance, high height, durable 9. The GPSBeidou dual-channel module obtains the speeddirection from the satellite, and the data is accurate without delay 10. GPS compass, accurate positioningreal-time synchronous display data, satellite acquisition data is not affected by geomagnetism, compass direction is the direction of the vehicle 11. No built-in battery, no danger of explosion under high temperature 12. Automatic switch on and off when the car starts and stops 13. Automatic photosensitive, equipped with photosensitive elements, automatically adjust the brightness of the display according to the external ambient light intensity, still clearly visible under strong light 14. Add the speed calibration function, which can be adjusted to be consistent with the speed display of the car dashboard 15. Applicable models: cars, taxis, new energy vehicles, trucks, motorcycles, automobiles, etc. 16. Satellite positioning speed: about 1-3 minutes in an open area outdoors, no satellite signal indoors (cloudy and rainy days affect the satellite positioning speed) 17. Operating temperature: -30 to 80 degrees Celsius 18. Input voltage: DC5V 20. Packing list: host, manual, bracket, data cable, packing box 21. Dimensions: 142 x 72 x 26mm 22. Weight: 123g