The White Yellow Blue has three functions, DRL and the turn signals and night blue. When you are driving straight, it lights up white. When you turn it flashing yellow light.When you turn on headlight,it lights up blue. Fit for: 2017-2018 Adopt 100% quality High luminance LEDs Elaborate and easy installation design Bright LED consumes far less power than a standard bulb while maintaining optimal light output Waterproof lamp for all road weather conditions Bright with super beam daytime running light to driving safety Longer life LED up to 50,000 hours, minimal maintenance cost Enhance total appearances Extra cool white beam enhances to total appearance to your car Daytime running light improves safety while driving allows your vehicie to be seen at much further distances. Greatly improves reaction time of oncoming motorists in an incident Light Source:LED Voltage:12V Special Features:High Power Color: Black & transparent Material: ABS Package Contents: 2 * Daytime running lights (white, yellow and blue three lights) 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.