Overview:This product is for drivers' safety, at high speeds, especially in high-speed driving at night, in order to avoid the driver to look down their head to watch the instrument, and decrease car accident. head up display can project the important information displayed by the instrument (such as speed) onto the windshield, It can not only to help determine the speed of inexperienced novice to control their speed and avoid many of the speed limit road due to speeding violation. More importantly, It enables the driver instantly read the number in great vision and always make drivers eyes on the road in clear mind.Features:Color LED screen highlighting Lossless installation Plug and PlaySelf-contained hood display, blackout integrated design, clearer display, no glareRich data display: driving speed, water tank temperature, battery voltage, automatic power on/off, driving mileage, mileage switching, detection and removal of vehicle error diagnosis code, no need for professional equipment to eliminateOverspeed, low voltage, high temperature, high temperature alarm3 display modes (standard mode, compact mode, competitive mode), 9 display screens with one buttonStart with the car, sleep with the car, effectively protect the car battery, and keep the manual switch machine. It is more beneficial to control the head up display.Specifications:Screen size: 3.5inchProduct size: 90*53*26mmAmbient temperature -40C - +120C atmospheric pressure 86 - 106KPaRelative humidity 10% - 95% Ambient noise <= 60dB (A)Working voltage: 11V~18Vdc (12Vdc/200mA)Standby current: about 20mAProduct Certification: CE ROHS FCCPacking size: 14.6*8.8*4.8cm/5.75*3.46*1.89inPackage weight: 170g/6oz Package list:1*head up display Host1*OBD line1* Non-slip mat1* Reflective film1* Instruction manual