Product Description GEYIREN A1000 Car HUD OBD II Head Up Display Overspeed Warning System Projector Windshield Auto Electronic Voltage Alarm . Brand Name:Â GEYIRENOutput Frequency:Â 1~1000hzRated Power:Â 12VWire or Wireless:Â WireSize Name:Â 90x54x12mmDisplay 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 Plastic, electronic componetsModel:Â A1000work voltage:Â 9~16V |