H11 2in1 LED Headlight Bulb Kit - XKchrome Smartphone App-enabled Bluetooth RGB Devil Eye + LED Headlight Conversion Dual Purpose. LED Headlight Bulb + Color Changing Devil Eye High power COB LED chips offer increased visibility, a wider viewing angle, and a much longer lifetime over halogen bulbs 3W RGB COB LEDs emit bright and vibrant colors to give your headlights a unique look in both projector and reflector setups. Smartphone BLE 4.0 app controlled. Most advanced smartphone controller on the market. Dual zone control, millions of color choices, music and speed sync, pattern maker, and more via XKchrome App.