Features： 1、Display speed and rotate speed data information, can provide speed alarm and overspeed alarm. 2、Measure water temperature and voltage, low voltage alarm and water temperature alarm. 3、Mileage will be displayed when the engine is flameout, convenient and fast data recording. 4、By preventing the driver from looking down at the dashboard, the HUD ensures driver safety and helps the driver stay in best state. 5、Exquisite and careful design, high‑definition lens display, not affected by external light. Specification： Item Type: Head Up Display Material: ABS Applicable: Universal Function: 1. Speed per hour. 2. Rotate speed 3. Water temperature 5. Turn off and display the mileage 6. Speeding alarm 7. Rotate speed alarm 9. Water temperature alarm Operating Instructions: Simply connect the head-up display (HUD) to the Onboard Diagnostic Interface (OBD) through the OBD line and when the car engine starts, the head-up display (HUD) is displayed. Package List： 1 x Host 1 x OBD Line 1 x Reflective Film 1 x Hood 1 x Double-Sided Adhesive 1 x Instructions