1. Plug and play: EUOBD & OBD cable - full 16 pins.2. HUD will turn on/ off when car's engine on /off.3. Screen: wide angle for better sight view.4. With Mirror Projecting, Display Data is more shine and clearly, no ghosting.5. Speed Unit: KM/H & .This is a latest OBDii Head-up Display HUD Mirror with screen. Displays driving data on the Mirror such as speed, RPM, water temperature, voltage etc. HUD avoids the danger of drivers looking down at the dashboard, it ensures the safety of drivers because of watching the data on the car front directly, and helps drivers to keep the best state , keep you in a safe driving mode. Besides, Design makes your eyes much comfortable.Bright sensor: adjust the brightness automatically.Interface: custom interface pre-set before start travel.Display Data: Driving speed, water temperature, voltage, Clock, RPM, RPM Bar, KM/h & Switch freely...Multiple Alarms: Over-speed alarm, Coolant alarm, Voltage alarm, Fatigue driving reminder, Engine fault alarm, Clear faulty code...OBD2 working mode are not compatible with follow vehicles:1. Almost 98% cars before the year 2004 ( the year 2004 included)2. Some Old Oil and electricity mixing, powered car, Pick up, SUV, ORV, Mini Bus...3. Few Special Cars after 2008 can't be compatible with Standard OBD2 protocols also...Colour:BlackMaterial:PlasticPackage Contents:1 * Heads up displayOnly the above package content, other products are not included.Note: Light reflection 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.