Solar Car HUD GPS Head-Up Display Digital Clock Speedometer Over-Speed Alarm Fatigue Driving Alert Altitude Mileage Display

Wide Application: Can Work On All Vehicles / All Moving Objects; Solar Powered + USB Charging. Multiple Functions: Real-Time Speed, Total Mileage, Time And Date, Altitude, Battery Level And Battery Charging Status, Number Of Satellites; Speed Unit: KM/H & MPH Switch Freely. Can Set 2 Over-Speed Alarm Value, One-Click To Change Over-Speed Level; Different Alarms: Over-Speed, Fatigue Driving; Support Clock & Driving Speed Calibration; Stable And Smooth Performance, Richer Data Display And More Powerful Information Functions..syi