1With multiple functions, it can display speed, rotation speed, water tank temperature, voltage, and clear faults. 2With overspeed alarm, voltage alarm, water temperature alarm, fatigue driving reminder, fault alarm. 3Multiple operation interface modes can be switched freely to meet different needs and bring you more convenience. 4Wide range of applications, suitable for vehicles that complied with OBDII standards, which has strong practicality. 5Observing the data on the front window glass of the car, no need to down head, insure the safety and help the driver maintain the best condition during driving. Item Type: Head Up Display Material: PC+ABS Compatible: Vehicles complying with OBDII standards Function: Speed, tachometer, water tank, water temperature, voltage, clear fault Alarm: Overspeed alarm, voltage alarm, water temperature alarm, fatigue driving reminder, fault alarm Instructions: Just connect the head-up display (HUD) with the on-board diagnostic interface (OBD) through the OBD cable, and the head-up display (HUD) will display when the car engine starts Size: Approx. 26 x 50 x 90mm/1 x 2 x 3.5in } 1 x Host 1 x OBD Cable 1 x Anti-Slip Mat 1 x Reflective Film 1 x Manual 1. Due to manual measurement, please allow an error of 13mm.2. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.