I put it in the car mainly for the hands-free function that works perfectly. As soon as it enters the car and turns on, it automatically connects to your phone. Nice feature because with a few bucks you give life to your car's old stereo. The music you hear doesn't have great quality even though it's Bluetooth 5.0 because it transmits to FM, where the frequency response (20-15000Hz according to the device's specifications) is not great. Still, you can listen to music, a bit low. Occasionally there are interferences depending on the frequency you transmit. For sound quality, it definitely cannot replace devices with cables or even an FM modulator.