Function: 1. Designed as a replacement for select vehicle audio systems. 2. Connect your device via Bluetooth and select AUX from the radio to play audio through car speakers. 3. Stream music and take hands-free calls using Bluetooth 5.0 for clear sound and stable connectivity. 4. Features Bluetooth 5.0 technology, backward compatible with earlier Bluetooth versions (2.0, 3.0, 4.0). Plug-and-play operation. 5. Supports common audio formats including MP3, WMA, WAV, and FLAC. 6. Enables high-fidelity audio transmission with support for DSD format. Specification: Item Type: Microphone Adapter Material: ABS Voltage: DC 12V Bluetooth Version: 5.0 Microphone Cable Length: Approx. 150 cm (59 in) Installation: Compatible with various vehicle audio systems. Locate the socket (typically at the rear of the radio), connect the power cord, and install directly. Power on the device—the Bluetooth indicator will flash. Enable Bluetooth on your phone and pair. Once paired, enable the AUX input on the head unit to begin playback. Package List: 1 x Car Microphone 1 x Bluetooth AUX Adapter Note: Initial activation may require a diagnostic tool.