Dcenta Car New OBD Speedometer Head-up Display B2 Multi-Functions Car Diagnostic Speedometer Driving

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- chips, lossless standby completely solves problem of high consumption.Intelligent switch, start and close with car.. 8 Major Display Switching: Vehicle speed/fuel consumption/acceleration time/liquid temperature/voltage/driving distance/driving time/Beijing time.;6 Alarm Functions: Overspeed alarm, RPM alarm, voltage alarm, liquid temperature alarm,fatigue driving alarm, fault code alarm.;Compact body, suitable for placement