Car Portable Speed Monitor, M3 Head Up Display Car Universal HUD with OBD Cable, Speedometer Engine RPM Water Temperature Overspeed Warning Mileage Measurement All in One

👍【Car Portable Speed Monitor】It displays driving datas on the front windshield such as speed, water temperature, voltage, single mileage etc. Avoid drivers unsafety because of watching the instrument while driving. Drivers can read the driving information instantly, and can always keep the best state on the way with HUD. 👍【Display Rich Content】All in one. Speed, water temperature, battery voltage, mileage measurement. Fatigue driving reminder, low pressure alarm, high temperature alarm, speed alarm, engine fault alarm, fault code elimination. 👍【Five Alarm Functions】Overspeed alarm, voltage alarm, water temperature alarm, fatigue driving, fault alarm. 👍【Automatic Sensitivity】The photosensitive component senses external light and automatically adjusts the brightness of the HUD to adapt to the environment. 👍【Auto Power ON/OFF】This overhead video will automatically powered on or off when the vehicle is started or shutdown, effectively protecting of the car battery.