1.Highlight Advantage:Auluminum Shell,High temperature resistant and heat dissipation efficiency as thick aluminum alloy substrate+ nanometer heat coating. 2.High quality: We use Cree LED chip which has high light output but low consumption, with HD projector provides a bright and clear logo shadow on the ground. 3.Plug and Play: Easy to install, no drilling, no wiring, no damage to your car. Dedicated to the Audi car, installation is simple, directly replace the original car door lights. 4.Open and Close:When the door is opened,the Audi LOGO