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P12 OBD2 Hud Head Up Display Digital Car Speed Projector On-Board Computer OBD Speedometer Windshield Projetor Notices: Please verify this item is fit for your vehicles before purchasing. Professional installation is highly recommended if you have any difficult in installation. Please allow 1-3mm in size deviation due to manual measurement. Due to the light and shooting angle, pictures may have slightly chromatic aberration. Please read detail information about the product carfully. Technical Parameters: Environment temperature: -40c- + 80c atmospheric pressure 86-106KPa Relative Humidity: 10% -95% environmental noise