Bluetooth Music Adapter for BMW E46, E39, E38 (Business Radio BM24, Rundpin Connector) – 1 Piece, Black BlueMusic audio adapter for wireless transmission of music, navigation announcements, YouTube audio, etc. Playback control via radio or steering wheel buttons. Playback starts automatically when selecting the radio source; stops automatically when switching to another source (e.g., AM/FM radio). Telephony is not supported with this adapter (use a separate Bluetooth adapter with microphone for hands-free calling). Developed in Germany. Integrated amplifier for enhanced audio quality. Supports Bluetooth 5.0 for low power consumption and stable connectivity. Built-in antenna ensures reliable signal throughout the vehicle. Installation: – Minimal installation effort. – Connects discreetly to the rear of the radio. – Compatible with vehicles equipped with a 4:3 onboard monitor (typically located in the trunk near the radio module). – No additional wiring required for power supply. – The radio automatically recognizes the adapter as a CD changer — no coding or programming needed. Product Dimensions: 3 cm Color: Black Package Includes: 1 × Bluetooth Music Adapter