Features: 1.Replacement for Mercedes A?Class W169. Replacement for Mercedes B?Class W245. 2.Match your mobile phone or tablet with the Bluetooth module. And select Aux from the radio, then you can use your phone to play music through the car speakers. 3.You can hear music from mobile phone/pad/mp3. Using Bluetooth 5.0 protocol, backward compatible with other versions of Bluetooth protocols such as 2.0, 3.0, and 4.0. 4.Can support ordinary MP3 format audio, and also support WMA, WAV, FLAC and other high?quality audio format decoding. 5.Non?ordinary Bluetooth function, can support DSD large?capacity transmission, stable data transmission between devices, fidelity, specially designed for music lovers. Specification: Item Type: Car Audio Cable Material: ABS Voltage: DC 12V Bluetooth: Bluetooth 5.0 Microphone Cable Size: Approx. 150cm/59.1in (manual measurement may have errors) Fitment: Replacement for A-W169, B-W245 C-W203, W209 CLK 04/04 M-W164, GL X164, R-W251 with Audio 20, Audio 50APS, Comand APS. Replacement for Mercedes A-Class W169 Replacement for Mercedes B-Class W245 Replacement for Mercedes C-Class W203 Replacement for Mercedes CLK-Class W209 Replacement for Mercedes GL-Class X164 Replacement for Mercedes M-Class W164 Replacement for Mercedes R-Class W251 Replacement for Mercedes S-Class W221 Replacement for Mercedes SL-Class R230 Replacement for Mercedes CL-Class (2004-2006)