The product is a genuine Mercedes-Benz rear window control switch designed for the E-Class W211 model from 2001 to 2009. The push-pull switch, with part number A2118219958, is manufactured in Germany and is known for its durability. It comes in black color and is suitable for the rear, left, or right placement on the vehicle. This switch is a reliable replacement part that ensures proper functioning of the window controls in the specified Mercedes-Benz model.