Features: 1. GPS satellite speed2. Altitude measurement display function3. Longitude and measurement display function4. Compass display5. Satellite time display6. Speeding alarm7. Fatigue driving alarm (it will alarm for 4 hours of continuous driving)8. Vehicle roll angle test9. Vehicle tilt angle test10. Automatically adjust screen brightness11. Color high-definition LCD screen display12. Carbon fiber appearance body design13. with the carName: Car head-up displayApplicable models: car truckPower Supply:DC 10V ~ 30VWorking Temperature:-40C ~ +80CElevation Angle:-40 ~ +40Roll Angle:-40 ~ +40Clock Error:Less than 1minuteVoltage Accuracy:0.5VSpeed Accuracy:Less than 0.36Km/hGPS Cold Time: 32s (Average)GPS Hot Time:1s (Average)GPS data Refresh rate:1SWireless Frequency:2.4GHzcolor:BlackMaterial:plasticPackage Contents:1 x Head-up displayOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.