Function:Function: Speed, RPM, water temperature, voltage, fuel consumption, single driving mileage, total driving mileage, single driving time, computer, oil temperature, fuel ratio, turbine pressure, brake testing, acceleration testing, fault code elimination, reading of the entire vehicle data streamAlarm: overspeed alarm, water temperature alarm, voltage alarm, speed alarmLanguage settings: English Chinese Thai Japanese Korean Russian Arabic Malaysian Spanish German FrenchPackage Included:1 x Head Up DisplayAuto-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.)