Fit for below vehicles: for b8 2017 2018 2019 Functions: 1. Follow 2. Battery protection 3. Turn on in two stage 4. Sensitivity adjustable 5. Automatically turn on/off light 6. Hold "unlock" button and turn on light 7. Delay model 8. Common mode 9. High speed mode 10. Can restore factory setting 11 .Adjustable and leaving home 12. Can set width light as daytime running light Colour:black Material:ABS Package Contents: 1 * Auto Headlight Switch 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.