The product is a Harman Becker audio amplifier specifically designed for BMW models from 2013 to 2020. It features a superseded part number of 9393191 and is compatible with various BMW series including the 5, 6, and 7 series. The amplifier is an original equipment manufacturer (OEM) part, ensuring high quality and compatibility with the specified BMW models. This product provides improved audio performance and is a reliable replacement for your vehicle's existing amplifier.