1、Speed Display: The level of the engine speed is related to the number of work per unit time, which directly affects the power of the vehicle. Monitor the engine speed to prevent damage. 2、Screen: Adopt high definition screen, the vision is clear at a glance, you can drive without bowing your head, and know real time vehicle dynamics at easy, greatly improve driving safety. 3、Main Function: The HUD display can be connect to the car OBD interface to read the real time data output by the ECU, and support automotive full protocol configurations OBD protocols. 4、Tire Pressure Monitoring: Equipped with four tire pressure detectors, which is installed on the four tires of the car, the tire pressure is detected in real time to ensure normal driving. 5、Practical: Detect pitch angles ranging from ‑40 to +40°, roll angles ranging from ‑40 to +40°, can display the accuracy of downhill and uphill, and locate the slope angle of the left or right side in detail. Item Type: Car HUD Display Material: ABS, PC Power Supply: DC11.5V-30V Working Temperature: -40°C-+80°C Pitch Angle: -40°-+40° Rolling Angle: -40°-+40° OBD Speed: Synchronize to car data OBD RPM: Synchronize to car data Voltage Measurement Accuracy: 0.5V Speed Accuracy: <0.36Km/h Tank Temperature Accuracy: 0.5 degrees Fault Code: Synchronize to car data Support Protocol: Supports automotive full protocol configurations Application: Universal fit 1 x HUD Display 1 x Manual 4 x Tire Pressure Detector 6 x Accessory 1 x Connection Cable 1 x Cigarette Lighter