Features:1- Color LED screen highlighting Lossless installation Plug and Play Self-contained hood display, blackout integrated design, clearer display, no 2- Rich 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 eliminate Overspeed, low voltage, high temperature, high temperature alarm 3- 3 display modes (standard mode, compact mode, competitive mode), 9 display screens with one button 4- Start 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 HUD Specification: Screen size: 3.5inch Ambient temperature -40C - +120C atmospheric pressure 86 - 106KPa Relative humidity 10% - 95% Ambient noise less than equal 60dB (A) Working voltage: 11V~18Vdc (12Vdc/200mA) Standby current: about 20mA colour:black Material:ABS size:90*53*26mm Package Contents: 1 x HUD Host 1 x OBD line 1 x Non-slip mat 1 x Reflective film 1 x Instruction manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.