Product Description GEYIREN A900 Car HUD OBD RPM Meter Head-Up Display Car Accessories Multi-Display Car Digital Speed Engine RPM Water Temperature . Brand Name:Â GEYIRENWire or Wireless:Â WiredSize Name:Â 90x54x12mmOutput Frequency:Â 1~1000hzRated Power:Â 12VDisplay Size:Â 3.5 inchUpdate Years:Â 2018Function:Â speed, water temperature, battery voltageLanguage:Â EnglishExternal Testing Certification:Â Rohs, CE, FCCCar Make:Â OBD II or EU OBD interfaceProduct Name:Â head-up displayMaterial:Â ABS+PCModel:Â A900work voltage:Â 9~16V |