Electromagnetic induction,Wireless,No need drilling. Easy to remove and change.Electromagnetic induction. No need drill hole type. Easy to install. Leading the trends of car. Lighting sources, no pollution ,no noise. No electronic interference. High efficient ,and energy saving ,environment friendly. Specially designed for auto modification fancier;bring more driving fun to drivers. Courtesy door light make your car artistic moreover the atmosphere. Embedded type design will not destroy the original car appearance. Description: Material: ABS Size: 6.8cmx6.6cmx2cm Color: Black Lamp Type: High Brightness LED Power output: 5W Working voltage: 4.5V