C3010 Car Head-up Display Speed Alarm 1. Input voltage: DC5.0V 2. Input current: more than 150mA 3. Satellite positioning speed: about 1 to 3 minutes in an open place outdoors, no satellite signal indoors (cloudy and rainy days affect the speed of satellite positioning) 4. Compass direction: the compass direction is the driving direction of the vehicle and is not affected by geomagnetism 5. Applicable models: most cars can be used 6. Material: ABS+PC 7. Packing list: host x1, bracket x1, data cable x1, manual x1 8. Weight: about 180 grams 9. Size: about 12.2x6.2x3.8 cm Features: 1. GPS satellite speed measurement 2. Compass (the compass direction is the direction of the vehicle) 3. Speeding alarm 4. Fatigue driving alarm 5. Most GM models 6. Single mileage statistics 7. Single driving time statistics 8. Full screen large font (4.2 inches) 9. Easy installation without wiring 10. The speed unit is switchable in kilometersmiles 11. Powered by car USB (5V) or cigarette lighter USB 12. Automatically turn on and off when the car starts and stops 13. Use ABS+PC material, high temperature resistance, corrosion resistance, high height, durable, no built-in battery, no explosion hazard at high temperature 14. Automatic light-sensing, equipped with light-sensitive elements, automatically adjust the brightness of the display according to the light intensity of the external environment, and it is still clearly visible under strong light