Nebublu Car Speedometer Head-Up Display; B2 Multi-Functions Diagnostic Detector for Improved Driving Safety

8 Major Display Switching: Vehicle speed/fuel consumption/acceleration time/water temperature/voltage/driving distance/driving time/Beijing time. 6 Alarm Functions: Overspeed alarm; RPM alarm; voltage alarm; water temperature alarm;fatigue driving alarm; fault code alarm. Compact body; suitable for placement. No matter where it is placed; it is clear and natural; without blocking any line of sight. time can be automatically switched in combination with speed of vehicle; speed is displayed when driving; and time is displayed when waiting for traffic lights. Hardware Upgrade:Using low-power chips; lossless standby completely solves problem of high power consumption.Intelligent switch; start and close with car.