Feature: 1. Available for cars with OBD2 and EUOBD port(Car automatic diagnosis system) ,plug and play 2. Multi-color design makes the screen more abundant and easier to read. 3. Rich Contents: speed,RPM,water temperature,voltage,instantaneous fuel consumption,average fuel consumption,driving distance measurement, shift reminders,fatigue driving reminders,low voltage alarm,high water temperature alarm,over speed alarm, engine failure alarm, eliminate the fault code, freely switch between kilometers&miles. 4. Auto power on/off: it start and off with vehicle started and shutdown, effective protection of the car battery; retaining the manual switch mode,more easy to control. Specification: Voltage: 9V~16Vdc(12Vdc/400mA). Data measurement: Vehicle speed,RPM,fuel consumption,engine coolant temp,live data,battery voltage,idle speed and instantaneous fule consumption,voice,engine rotational speed. Size (L x W x H): 11.80 x 4.00 x 4.30 cm / 4.65 x 1.57 x 1.69 inches. Weight: 180g. Package Included: 1 X P9 Head Up Display; 1 X Reflective Film; 1 X OBD Cable; 1 X Antiskid Pad; 1 X English User Manual