1Automatic adaptation car models, and can apply for cars in line with OBD II and EUOBD port (car automatic diagnosis system) ,plug and play 2TFT LCD multi color smart display, the first scan will show the vehicle protocol 3Add new functions: Accelerating competitive mode, brake performance test, can read the retire car data stream information 4Rich Content: Speed, RPM, water temperature, voltage, instantaneous fuel consumption, average fuel consumption, driving distance measurement, driving time, low voltage alarm, high water temperature alarm, over speed alarm, freely switch between kilometer 5Multi function display mode or simple function display mode can be switched freelyDescription: This Car OBD Smart Digital Meter is use for display the car dashboard information(e.g.speed, RPM, fuel consumption, water temperature, voltage etc.), and avoid the dangerous of lowering down head to read the dashboard. It can help to get the driving information directly and quickly, and keep the driver's eyes always on road, making the driver more safe in driving. Features: Automatic adaptation car models, and can apply for cars in line with OBD II and EUOBD port (car automatic diagnosis system) ,plug and play. TFT LCD multi color smart display, the first scan will show the vehicle protocol. Add new functions: Accelerating competitive mode, brake performance test, can read the retire car data stream information. Rich Content: Speed, RPM, water temperature, voltage, instantaneous fuel consumption, average fuel consumption, driving distance measurement, driving time, low voltage alarm, high water temperature alarm, over speed alarm, freely switch between kilometers & miles. Multi function display mode or simple function display mode can be switched freely. Specifications: Condition: 100% Material: Plastic, Electronic Components Housing Color: Black Display Color: Colorful Environment Temperature: - 40 ~ +80Ralative Humidity: 10% - 15% Atmospheric Pressure: 86-106KPa Alarm Sound Level: >=30dB(A) Environment Noise:Work Voltage: 9V~16V DC(12V DC/400mA) Size: Approx. 73 x 68 x 46mm / 2.9 x 2.7 x 1.8in Package Weight: Approx.177g Package List: 1 x Car HUD Display 1 x OBD2 Connecting Line