Features: 1.Suitable for cars with OBD2 and EUOBD ports (automatic car diagnostic system), plug and play. 2.Multifunctional design, with speed, engine speed, water temperature, voltage, fuel consumption, engine fault code, speed mode display. 3.High-definition display, easy to read. Overspeed alarm includes single-speed alarm and four-level alarm. 4.HUD turns on / off as the vehicle starts and shuts down, effectively protecting the car battery; retaining the manual switch mode makes it easier to control the HUD. 5.The engine speed alarm can help improve fuel efficiency through gear shifts and is very useful for novices. 6.Automatic and manual brightness adjustment mode, glare-free driving. Specification: Condition: 100% Brand New Item Type: HUD Head Up Display Material: ABS Color: As Pictures Shown Brand: SINCO TECH Type: Car Computer Monitor Model: DO905 Applicable Models: 12V Screen Type: Embedded Screen Size: Approx. 72 x 31mm / 2.8 x 1.2in Display Type: Number Working Voltage: DC 9-16V Alarm Sound Level: 30db