Features: Model: P10 - OBD Speedometer With Car Diagnostic Tool, Not Compatible For Some Cars. Plug and play. Real 2.6" 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 entire car data stream information. Rich Contents: vehicle speed, engine 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, engine fault code alarm, eliminate the fault code, freely switch between kilometers & miles. Multi function display mode or simple function display mode can be switched freely to show above content. Supporting Protocol: ISO15765 CAN Bus, ISO14230 KWP2000, ISO 9141-2 Specifications: Environment temperature: -40c- + 80c atmospheric preure 86-106KPa Relative Humidity: 10% -95% environmental noise <= 60dB (A) Alarm sound level: =30dB (A) Working voltage: 9V ~ 16Vdc (12Vdc / 400mA) Size: As the Pictures Package Included: 1x OBD Smart Digital Meter HUD P10 NOTES: 1. Due to different display and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. 2. Due to manual measurement, please allow a little measurement deviation. 3. If you have any problem with the product received or your package is miing, please