1. Plug and Play connectivity with any OBDII or EUOBD capable vehicle.2. Screen Size: 3.7 Inch HD Display. 2-color design makes the screen more abundant and easier to read.3. Nano-technology to eliminate double reflections, more clear.4. Contents: Speed, Fixed speed cruise, RPM, water temperature, voltage, low voltage alarm, high water temperature alarm, over speed alarm, fatigue driving alarm, freely switch between kilometers & miles.5. Auto ON/OFF: HUD start and OFF with vehicle started and shutdown, effective protection of the car battery;retaining the manual switch mode, more easy to control HUD.OBD2 Speedometer hud Cannot work with:1. Production of European / American up to 2004 And Asian manufactured before 2007 .2. American producing Dorge, , and All until 2004 ;3. France Auto fat production, , , , and so on.4. Japanese , production of , , And all until 20085. Korean produced by , some models.6. All from Italy manufacture.7. Mixing of oil and electricity, a car on crude oil fuel, a pickup truck, an off-road vehicle, .Material:ABScolour:blackPackage Contents:1 x head-up display1 x reflective film1 x OBD lineOnly 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.