1、Engine 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、Safe: Accurate display of digital speed, real time speed measurement, accuracy is less than 0.05Km/h, automatic monitoring of driving conditions, preventing fatigue driving and preventing overspeed. 3、Pitch Angle: It can display the accuracy of downhill and uphill, and there are slope scale prompts for both up and down slopes, and if the up and down exceeds 40 degrees, it is a warning slope. 4、Roll Angle: It can locate the slope angle of the left or right side in detail, and the diagonal driving cannot exceed 30 degrees, otherwise it will be dangerous, and the balancer will give you an accurate identification. 5、Abnormal Alarm: When the vehicle is abnormal, the corresponding fault location warning light will light up and there is an alarm sound to escort the trip. Item Type: Car HUD Display Material: ABS Power Supply: DC10V-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 Speed Accuracy: <0.05Km/h Tank Temperature Accuracy: 0.5 degrees GPS Hot Start Time: 1s (average) Support Protocol: Supports automotive full protocol configurations Wireless Transmission Frequency: 2.4GHz Application: Universal fit 1 x HUD Display 1 x Manual 1 x Cable 1 x Accessory