HUD Car OBD2 Head Up Display On-board Computer Speedometer Windshield Projector Car Water Temp Fuel Consumption Overspeed Alarm Auto-match models, plug and playAccording to OBD or EUOBD,( the on-board auto-matic diagnosis system) plug and play.- Judgment method:Open and find the sticker under the hood.lf OBD2 CERTIFILE can be installed (as shown in Figure 1)Or check whether there is an automobile diagnosis port under the steering wheel (as shown in figure 2)(u.s. cars can be used after 2003 and most other cars after 2007.) Product description: This is a claic 5-inch large-screen OBDII Head-Up Display (HUD).Driving data such as vehicle speed, rotational speed, water temperature, voltage, and one-way mileage are displayed on the front windshield. The HUD avoids the danger of the driver looking down at the instrument panel, as it can see the data on the car's front window gla, keeping the driver safe and helping the driver stay in top shape while on the road, keeping you in safe driving mode.In addition, a variety of operating interfaces and colors can be freely switched, bringing more fun to your car life. Display data: vehicle speed, water temperature, voltage, fuel consumption, RPM, single mileage, total accumulated mileage, driving time, system time, intake preure, acceleration test, free switching of kilometers and mileage, KM/h, MPH free switching, C and switch freely... Alarm function: Overspeed alarm, fatigue driving reminder, high water temperature alarm, low voltage alarm, shift reminder, engine failure alarm, clear fault code... Feature: 1. Large screen: 5-inch screen, better field of vision.2.12 Main functions and alarm reminders3. Speed unit: KM/H & MPH.4. Turbo preure: PSI and KPA.5. Fuel consumption unit: L/100km (instantaneous fuel volume and average fuel volume). Package Included: 1 x Head Up Display