1Fitment: Rearview mirror turn signal light is specially designed, excellent replacement for Mercedes?Benz C?Class W203 4 Door 2004?2007. 2Function: The turn signal light is an important device to indicate the dynamic information of the car, which can make people know the trend of the car in advance. 3Super Bright: Side mirror turn signal light has high brightness but low power consumption, providing you extra safety when driving at night. 4Waterproof Design: Sealed design, side mirror turn signal light is waterproof, can adapt to all kinds of extreme conditions, such as rain or car washing. 5Durable Material: Door mirror turn signal light is made of excellent Abs material, high temperature resistant, can increase the work efficiency of the lamp.