Features 1、Applicable Model: The bluetooth adapter is a replacement for Mercedes‑Benz A‑Class W169, replacement for Mercedes‑Benz B‑Class W245, replacement for Mercedes‑Benz C‑Class W203. 2、Function: With this AUX IN Bluetooth adapter, you have the ability to stream music from your external device, such as your smartphone or tablet, via the car stereo. 3、Highly Functional: You can turn on the hidden function of the vehicle, support online music playback, use various online APP, and the sound source is updated in time. 4、Multifunctional: Support T card, U disk playing, Bluetooth wireless audio, AUX input, microphone telephone hands free calling, ensure more convenient driving. 5、Easy Installation: Thanks to the simple plug and play installation, you can get started immediately via the Bluetooth connection. Specification Item Type: Bluetooth Adapter Material: ABS Bluetooth Version: 5.0 Working Current: 20MA Sampling Frequency: 44.1/48/96KHz Frequency Response: 20Hz-20kHz Frequency Range: 2.402-2.480GHz Transmission Distance: Approx. 15m/49.21ft Distortion Rate: ≤1% Signal to Noise Ratio: 95dB Product Features: Audio HD transmission through the original car AUX signal Bluetooth version 5.0 supports aptX, aptX HD, aptX LL Support TWS (Receive Mode) AC6925A stereo bluetooth chip Integrated intelligent voice noise reduction technology to reduce echo and noise Power Supply Mode: Applicable Models: Fits for Audio 20, Audio 30, Audio 50 APS Comand APS (nur NTG2) Fits for A-W169, B-W245 C-W203 CLK-W209 04/04~ M-W164, GL-X164, R-W251 mit Audio 20, Audio 30 Audio 50 APS,Comand APS Replacement for Mercedes-Benz A-Class W169 Replacement for Mercedes-Benz B-Class W245 Replacement for Mercedes-Benz C-Class W203 Replacement for Mercedes-Benz CLK-Class W209 Replacement for Mercedes-Benz GL-Class X164 Replacement for Mercedes-Benz M-Class W164 Replacement for Mercedes-Benz R-Class W251 Replacement for Mercedes-Benz S-Class W221 Replacement for Mercedes-Benz SL-Class R230 Replacement for Mercedes-Benz CL-Class (2004-2006) Package List 1 x Bluetooth Adapter 1 x Microphone 1 x Manual