This high and low tone note signal horn is an original equipment manufacturer (OEM) part for 1997-2004 Mercedes-Benz R170 SLK230 and SLK320 models. It comes with a horn button and is made of plastic material. This multifunctional horn contact ring is compatible with various interchange part numbers, including A-28-657625, 28657625, A28657625, and 28 657625. The manufacturer warranty for this horn contact ring is one month, and it is not a universal fitment. This item is perfect for those who need to replace their car's horn system and want to ensure that they are getting a high-quality OEM part. Get your hands on this genuine Mercedes-Benz horn contact ring today!