BMW 3 Series E90/E91/E92/E93 Bluetooth AUX Audio Receiver Cable — Fits SA 609/650/661/662

Overview: This in-line Bluetooth audio adapter converts your BMW’s AUX-capable radio connector into a wireless music receiver, enabling phone or MP3 playback through the car’s speakers. Designed specifically for BMW 3 Series E90 / E91 / E92 / E93 units. Compatibility: Supports SA 609 (navigation system); Support for SA 650 (BMW Business Radio with CD drive); Support for SA 661 (BMW Business Radio with CD drive); Support SA 662 (BMW Business Radio). Key features: - Stream music from smartphones or other Bluetooth-enabled devices to your factory stereo. - Requires selecting/enabling AUX on the radio to play audio. - Bluetooth 5.0 module with backward compatibility for Bluetooth 2.0, 3.0, 4.0 and 5.0 devices. - Decodes common and high-quality audio formats: MP3, WMA, WAV, FLAC; also supports large-capacity DSD transmission. - Transmits audio from streaming apps (e.g., QQ Music, Kugou), video soundtracks, and navigation prompts — audio only (no video). Installation and use: Plug the adapter’s connector into the back of a compatible radio that has a single AUX-capable socket. Connect the red wire to 12V+ and the black wire to 12V-. On the head unit, choose the Auxiliary input, then pair your phone via Bluetooth to begin playback. Technical specifications: Type: Automotive AUX Input Cable; Material: Plastic + Copper; Color: Black; Total length: 27cm; Voltage input: 5V-12V DC; Working current: 600mA; Standby current: 20mA; DAC resolution: 20bit; Total Harmonic Distortion: 0.05%; Signal to noise ratio: 90dB; Frequency response: 20Hz-20KHz; Operating temperature: -35 ° C to + 75 ° C. Note: microphone optional (注意： 支持麦克风可选). Bluetooth compatibility and audio-only limitation reiterated: Bluetooth 5.0 works with earlier Bluetooth versions; the unit relays sound from apps and navigation but does not carry images.