RYSJM | X90 GPS head-up speed projector TPMS Tire Monitor Inclinometer X91 Digital Car Compass Overspeed Alarm Clock Latitude Longitude

Specification:-Power: DC 10V~30V-Depression&Elevation angle: -40℃ +40℃-Clock Error Value: -Voltage measurement accuracy: O.5V-GPS Cold Boot Time: 32s (average)-GPS Data Refresh Time: 1s-Working Temperature: -40℃ ~ +80℃-Roll Angle:-40℃ +40℃-Voltage Measurement Range: DC5V~30V-Speed Accuracy: -GPS Hot Boot Time: 1s (average)-Wireless Transmission Frequency:2.4GHz-Product Size:1706860(mm)Package Included:1X90 HUD1Cigare lighter1Fixed pad1Instruction manual1*Packing box1.How To Switch From Miles To Km?it supports both MPH/h and KM/hPress M , switch MPH/h inch and KM/h metric(Note: Altitude is in feet in MPH/h mode and meters in KM/h mode)(Explanation: MPH/h icon lights up to MPH/h Mode, MPH/h icon is off to indicate KM/h mode)2.How to adjust the time?In the state of power off, press the power button. After the screen lights up, press and hold the M button / power button 3-4 seconds immediately1. Decrease time: Long press the M key will automatically enter the time adjustment interface.M key (left): adjust the hour hand, power button (on the right): adjust the second hand.2. Add time: long press the power button.some country's time is slower /faster than GPS time some hoursYou can adjust time according to the user manualVehicular intelligent Horizontal slope meterAlarm reminder/Fully automatic detection of vehicle driving conditions