Car HUD Speed DisplayUniversal HUD Car Head Up Display Speed Limit Warning MPH/KM/h PlugPlay-DBAThe HUD displays driving data on the front windshield, such as speed, RPM, fuel consumption, water temperature, and voltage. It helps prevent drivers from becoming dangerous by looking at the instrument while driving. Drivers can read the driving information instantly and can always maintain the best condition on the road with HUD.+ productAvailable for cars with OBD2 and EUOBD port (car automatic diagnostic system), plug and play.Rich Content: Speed, Engine RPM, Water Temperature, Voltage, Fuel Consumption, Engine Fault Code.Display mode: default mode, high speed mode, auto mode.FeaturesAlarm sound level: "= 30dB (A)Operating voltage: 11V ~ 16Vdc (12Vdc / 350mA)HUD Size: Approx. 150 x 85 x 14(mm)/5.9*3.3*0.6inHUD weight: 280gRelative humidity: 10% -95% ambient noise = 60dB (A)Scope of OBD2:OBD2 compliant gasoline vehicles produced in the United States after 2004, and OBD2 compliant gasoline vehicles produced in other regions after 2008.The following common models are not applicable to OBD2:1. Incompatible: US Models: For Dodge/JEEP/Sail/Chrysler, models produced in 2004 and before 2004.2. Incompatibility: French and Italian models: For Fiat/Maserati/DS/Peugeot/Citroen/Simca/Amilcar, etc.3. Incompatible: Japanese models: For Suzuki/ for Mazda 6/ for Infiniti QX50 q50 q501/ for Avanza 2013/ for IS250, EX250, ES300H/ for Jazz, CRV and cars produced before 2008, etc.4. Incompatible: South Korean models: For Kia Soul PS 2017/ For Hyundai Sonata 2013, etc.5. Incompatible: gasoline-electric and diesel hybrid cars, pickup trucks, RVs, modified cars with car computers, for the Chrysler group, for all models