The product is a genuine OEM Harman Becker amplifier module unit for Mercedes-Benz vehicles from the years 2008 to 2017. It is a complete sound amplifier specifically designed for models such as the E550, E350, and C300. Made in Germany, this unit comes with various interchange part numbers and manufacturer part numbers to ensure compatibility and authenticity. Additionally, it features a control unit for stereo audio radio systems, providing a high-quality audio experience for Mercedes-Benz owners.