Various interfaces can be freely switched, providing a driving experience. Full language operation, easy to understand settings page. 2 types of installation: with adjustable bracket, mounted on the dashboard or attached to the windshield. Display data: Vehicle speed, RPM,clock, gear, voltage,water/oil temperature,automatic , driving time, mileage,acceler,slope and other vehicle ECU data. It allows you to understand your car more clearly without looking down at the dashboard and adds a sense of technology to your car. Auto-match models, plug and play According to OBD or EUOBD,(the on-board auto- diagnosis system) plug and play. (u.s. cars can be used after 2003 and most other cars after 2007.) Functions: we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Not only a multi-functional display, but also a tester. Enhanced stability of dual core chips. Screen Size:3 Inch TFT Model:P25 Applicable:For most cars with OBD2 interface Function mode: OBD / GPS Note:OBD+GPS function both displayed at the same time is default, if the vehicle does not support OBD, only the GPS function is available. Color:As Shown Material:ABS Package Contents: 1 x P25 HUD Only 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.