Car Head-up Display P11 Multi-Functions Car Digital Gauge OBDⅡ Diagnostic Detector Fault Code Elimination Speedometer Safe Driving Computer Overspeed Alarm Thanks for purchasing our car smart digital meter. This product connects car OBDⅡ interface by OBD cable, and display the driving datas, such as vehicle speed, engine RPM, water temperature, fuel consumption, voltage etc. It can keep the driver's eyes always on road to avoid the dangerous of lowering down head to read the dashboard. This product won't change any car ECU datas. Kindly Attention: OBDⅡ mode working voltage: 11V~18VDC (12vdc/200mA), when voltage is higher than 24v, please use a USB cable for GPS mode.  This product is a dual system: After power on, select the language you are familiar with, select OBD or GPS system, and automatically enter the last selected system after 5 seconds without operation. Features: OBDⅡ and GPS Dual Mode: This smart gauge integrates OBDⅡ and GPS dual mode. GPS mode is perfect for all vehicle. The OBDII mode is only  available for vehicles produced after 2008. OBDll mode is not compatible with hybrid electric vehicle, diesel car, pickup truck, RV, computer modified car. If your car is not compatible with OBD mode, please use GPS mode. If you are not sure if your car is compatible, please prior to purchase. OBDⅡ Mode Display: vehicle speed, rotate speed, water temperature, voltage, driving distance, driving time, fuel consumption, local time, oil temperature, driving direction, number of satellites, air fuel ratio, intake pressure, turbo pressure, acceleration test, brake test, engine load and read the whole vehicle data stream. Scan and clear fault codes. Alarm: Overspeed alarm, RPM alarm, water temperature alarm, voltage alarm and engine trouble alarm. GPS Mode Display: speed, voltage, sigle mileage, driving time, local time, altitude, driving direction, number of satellites, acceleration test, brake test. Alarm: Overspeed alarm and voltage alarm. Fault Code Clearing: Read the whole vehicle ECU data, in-depth inspection and diagnosis. It can diagnose and clear your car's fault code. HD Display Screen: multiple UI can be switched, the color of numbers on the interface can be freely adjusted.  Light Sensor: Head up display can automatically adjust the brightness according to the environment. Compact Design: The compact body suitable for placement. No matter where it is placed, it is clear and natural, and dose not block any sight. Specifications: Model: P11 Color: Black Material: ABS Screen type: LCD Screen size: 1.8inch System: OBDⅡ+GPS Working voltage: 11V-18Vdc Support language: English and Chinese Product size: 65.5 x 65 x 65mm Package size: 14.5 x 10 x 7.5cm Package weight: 260g Package List: 1 x Head Up Display Main Unit 1 x OBD Cable 1 x USB cable 1 x User Manual 1 x Non-slip Mat