It was purchased to transfer the music from the mobile phone to the car radio and so far everything is good. It does its job perfectly. The downside is the delay it has from the moment you press play on the phone until you hear the music through the car speakers. We're talking about a delay of 5-8 seconds in response, and this applies to every song change. Every time you choose to change a song, there will be a period of silence. However, if you listen to internet radio, the delay will only occur at the beginning. 17/10/23 Recently used and forgotten in the car's glove compartment, it works perfectly fine without any delay, and it has even been tested with older mobile phones. So the problem was clearly from the software of the respective mobile phone and not from the adapter.