Features: OOTDTY brand new and high quality Safty driving, Keep your eyes ahead, No need to down your head to see Dashboard while driving. Easy to Install, Only need connect the HUD with Car OBD port by OBD cable, HUD will display when car engine on / off. Over-time driving alarm, low voltage alarm, over-speed alarm, high temperature alarm, engine faulty alarm. Display information: speed, RPM, water temperature, voltage, single driving distance, low voltage alarm, high water temperature alarm, over speed alarm, freely switch between kilometers and miles. Multi-color design makes the screen clearer and easier to read. Specifications: Material:ABS Screen Size:3.5inch Size:Approx.90x53x26mm/3.54x2.09x1.02in Net Weight:170g Package Includes: 1x M8-HUD 1x Instruction 1x Anti-slip Pad 1x OBD Line 1x Screen Film Note: The head-up display is only suitable for cars that comply with the OBDII protocol. All Italian models are not available, please choose GPS model: European and American OBDII models must be manufactured after 2004: Asian car brands OBDII models manufactured after 2008 can be used. Please allow 1mm errors due to manual measurement.Due to the difference between different monitors, the picture may not reflect the actual color of the item.